【解析版】2019年高考天津卷英语试题

绝密★启用前

2019年普通高等学校招生全国统一考试（天津卷）

英语笔试

本试卷分为第I卷（选择题）和第Ⅱ卷（非选择题）两部分，共130分，考试用时100分钟。第l卷1至10页，第Ⅱ卷11至12页。

答卷前，考生务必将自己的姓名、准考号填写在答题卡上，并在规定位置粘贴考试

用条形码。答卷时，考生务必将答案涂写在答题卡上，答在试卷上的无效。考试结束后，将本试卷和答题卡一并交回。

祝各位考生考试顺利！

第I卷

注意事项：

1. 每小题选出答案后，用铅笔将答题卡上对应题目的答案标号涂黑。如需改动，用橡皮擦干净后，再选涂其他答案标号

2. 本卷共55小题，共95分。

第一部分：英语知识运用（共两节，满分45分）

第一节；单项填空（共15小题；每小题1分，满分15分）

从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。

例：Stand over there _____________ you'll be able to see it better.

A. or

B. and

C. but

D. while

答案是B。

1.---I guess you want to go play tennis.

---__________. That's exactly what I was thinking too.

A. I didn't get it

B. It's up to you

C. You never know

D. You read my mind

【答案】D

【解析】

【详解】考查情景交际。句意：---我猜你想去打网球。---你猜透了我的心思。那就是我正在想着的事情。从回答的后半句可知，听话人同意说话人的意思。而A（不明白，不认同某人

的说法）、B（决于你）和C（很难说，不可预知）都不符合语境。“you read my mind”意为你知我心，符合语境，故选D。

2.I __________ to send Peter a gift to congratulate him on his marriage，but I couldn't manage it.

A. had hoped

B. am hoping

C. have hoped

D. would hope

【答案】A

【解析】

【详解】考查过去完成时。句意：我本来计划在Peter结婚时送他一个礼物的，可是我没有做到。第二个分句中“couldn’t”用的是一般过去时，它之前的动作用过去完成时。故选A。

3.A study shows the students who are engaged in after-school activities are happier than

_________who are not.

A. ones

B. those

C. these

D. them

【答案】B

【解析】

【详解】考查代词。句意：一项研究表明，参加课外活动的学生比不参加课外活动的学生更开心。空格处代词与the students是对应关系，可以用the ones或者those替代。“them”指代的是前边提到的复数名词，不能与the students形成对应关系。“these”一般不用定语从句修饰。故选B。

4.____________ to think critically is an important skill today's children will need for the future.

A. Learn

B. Learned

C. Learning

D. Having learned

【答案】C

【解析】

【详解】考查动名词。句意：学会批判性思维是当代小孩未来所必需的重要技能。句子缺少主语成分，而过去分词、动词都不可以做主语。此处用动名词做主语，故选C。

5.___________ all the problems, several of the players produced excellent performances.

A. According to

B. Instead of

C. In addition to

D. In spite of

【答案】D

【解析】

【详解】考查介词词组。句意：尽管存在所有这些问题，几个运动员还是表现很好。A. according to据(…所说); 按(…所报道)；B. instead of代替，作为…的替换；C. in addition to 另外，加之，除…之外；D. in spite of 尽管，不管。故选D。

6.---My son got a full scholarship to his dream university!

----Wow, ___________! What's he going to study?

A. good for him

B. go for it

C. what a coincidence

D. all the best

【答案】A

【解析】

【详解】本题考查情景对话。句意：--我的儿子得了他梦想大学的全额奖学金。--噢，对他有好处!他打算学习什么呢? good for him“对他有好处”；go for it“努力争取”；what a coincidence“多么巧合”；all the best“祝一切顺利（祝酒告别时说）”。故选A。

7.We can observe that artificial intelligence has already made a(n) ___________on our lives in many ways.

A. statement

B. impact

C. impression

D. judgment

【答案】B

【解析】

【详解】本题考查名词词义辨析。句意：我们能够看到人工智能在许多方面已经对我们的生活产生了强烈的影响。statement“陈述说明”；impact“强烈的影响，冲击力”；impression“印象，感想”；judgement“判断力判断”。故选B。

8.Amy, as well as her brothers, ____________ a warm welcome when returning to the village last

week.

A. is given

B. are given

C. was given

D. were given

【答案】C

【解析】

【详解】本题考查时态和语态。句意：艾米和他的兄弟们当上周回到村里时，受到了热烈的欢迎。根据last week可知应用过去时，排除选项A和B。as well as连接并列主语，谓语动词就前原则。这句话真正的主语是Amy，她受到热烈欢迎，所以用过去时的被动。故选C。

9.Kate heard a man's voice in the background, but she couldn't ___________ what he was saying.

A. set aside

B. take back

C. make out

D. keep off

【答案】C

【解析】

【详解】本题考查动词词组辨析。句意：凯特听到背景中有一个男人的声音，但她听不清他在说什么。set aside“存储，留出”；take back“收回，拿回”；make out“辨认出，理解，了解”；keep off“（使）避开”。故选C。

10.Most colleges now offer first-year students a course specially ___________ to help them succeed academically and personally.

A. designed

B. designing

C. to design

D. being designed

【答案】A

【解析】

【详解】本题考查非谓语动词。a course 和design之间是动宾关系，所以用过去分词。故选A。句意：现在大多数大学都为一年级学生开设了一门课程，专门帮助他们在学业和个人方面取得成功。

11.Their child is at the stage__________ she can say individual words but not full sentences.

A. why

B. where

C. which

D. what

【答案】B

【解析】

【详解】考查定语从句。句意：他们的孩子正处于能说单个单词而不能说完整句子的阶段。句中she can say individual words but not full sentences是一个定语从句，先行词是the stage，关系词在定语从句中作地点状语，用关系副词where，故选B。

12.The professor warned tie students that on no account _____________ use mobile phones in his class.

A. should they

B. they should

C. dare they

D. they dare

【答案】A

【解析】

【详解】考查部分倒装。句意：这位教授警告学生们，在他的课堂上，决不应该使用手机。on no account决不，否定词放在句首，句子使用部分倒装，应该做should do,敢于做dare do，根据句意表示”应该“，故选A。

13.Tom is so independent that he never asks his parents' opinion _________ he wants their support

A. since

B. once

C. unless

D. after

【答案】C

【解析】

【详解】考查连词辨析。句意：汤姆是如此独立，以至于他从来不征求父母的意见，除非他想得到他们的支持。since因为；once一旦；unless除非；after在……之后，根据题意，故选C。

14.The workers were not better organized, otherwise they ____________ the task in half the time.

A. accomplished

B. had accomplished

C. would accomplish

D. would have accomplished

【答案】D

【解析】

【详解】考查虚拟语气。句意：工人们没有被更好的组织起来，否则他们用一半的时间就能完成任务。根据上句the workers were not better organized可知，这是对过去事情的虚拟。与过去事实相反的假设。其句子结构为：从句：If+主语+过去完成时+其他，主句：主语+should(would, could, might)+现在完成时+其他，故选D。

15.A dog's eating habit requires regular training before it is ___________ established.

A. properly

B. widely

C. originally

D. temporarily

【答案】A

【解析】

【详解】考查副词辨析。句意：在狗的饮食习惯被正确地建立之前，需要定期的训练。properly 正确地；widely广泛地；originally最初；temporarily临时地，根据题意，故选A。

第二节：完形填空（共20小题；每小题1. 5分，满分30分）

阅读下面短文，掌握其大意，然后从16~35各题所给的A、B、C、D四个选项中，选出最佳选项。

I was ready to pay for my bananas at the grocery one night，when fear seized me. My wallet was gone. I could only have left it on the G9 bus，which was now speeding in the dark to

some______16______station.

The____17____moment was quickly followed by mental math. How much time and money would it cost to replace the_____18_____of that little wallet？The credit cards，the driver's license，the cash，all lost to the bus.

Two hours later，back at my house，I heard a knock on the door. My husband _____19_____it while I was on the phone in the dining room. "Does Jennifer live here？" I heard a lady say. In my husband's hand was my wallet，with not a penny_____20_____. She left before I could ____21____ make it to the door to offer my thanks.

After sharing the story online，I heard from someone，who ____22____ the lady as Erin Smith. Without ___23___ ，I called to thank her. She said she ____24____ my wallet on a bus seat.

She_____25_____that going to a stranger's house was a ____26____ move，but she decided to take

the chance. "If I were in that ____27____ I would want someone to try to find me，" she said.

This one stranger responded beautifully to my small ____28____ ，but she actually wasn't the only one. Right after Erin ____29____ my wallet on the bus，she posted a picture of my driver's license to an online forum（论坛），trying to see ____30____ anyone knew me. No sooner did she leave my doorstep than I had emails from two women whose kids go to my son's nursery and who recognized my face. I've never ____31____ words with those moms beyond small tall，but they wanted to help. I read that people are more divided than ever，but that's not how the people

I_____32_____tend to act.

___33___,I feel blessed someone had wanted to help a stranger. Erin had gone

____34____what almost anyone would have done，finding my house on a bitterly cold night，and for that I was extremely ____35____ .

16. A. accessible B. hidden C. unknown D. convenient

17. A. face-saving B. brain-washing C. eye-catching D.

heart-stopping

18. A. parts B. contents C. details D. ingredients

19. A. ignored B. answered C. examined D. interrupted

20. A. missing B. returned C. remaining D. abandoned

21. A. still B. ever C. yet D. even

22. A. selected B. appointed C. identified D. defined

23. A. delay B. alarm C. regret D. invitation

24. A. moved B. placed C. opened D. spotted

25. A. disagreed B. complained C. calculated D. recommended

26. A. selfless B. risky C. slow D. personal

27. A. site B. direction C. situation D.

atmosphere

28. A. crisis B. danger C. threat D. failure

29. A. got rid of B. made use of C. had control of D. took possession of

30. A. if B. where C. how D. when

31. A. recalled B. exchanged C. repeated D. whispered

32. A. encounter B. follow C. consult D. accompany

33. A. Going away B. Turning around C. Looking back？ D. Coming along

34. A. into B. against C. over D. beyond

35. A. longing B. enthusiastic C. concerned D. grateful 【答案】16. C 17. D 18. B 19. B 20. A 21. D 22. C 23. A 24. D

25. C 26. B 27. C 28. A 29. D 30. A 31. B 32. A 33. C 34.

D 35. D

【解析】

这是一篇夹叙夹议类的文章。作者将钱包落在了公共汽车上，Erin捡到了作者的钱包，在寒冷的黑夜亲自登门归还钱包。作者深受感动。文章叙述了事情的来龙去脉和作者的感受。【16题详解】

根据前文的“fear seized me. My wallet was gone.”可以推知，作者将钱包落在了公共汽车上，而汽车正在开往某个作者未知的地方，这使得找回钱包的希望渺茫，因此作者心生“恐惧”。故C选项(unknown)切题。

【17题详解】

根据上一段中的“fear seized me”可以推知，作者在发现丢了钱包之后的第一感觉是“害怕”。之后，作者开始在内心计算找回钱包里的那些东西所需要的时间和钱数。故该空应和fear表达的意思相近，D选项（heart-stopping）切题：令人心跳停止的，惊心动魄的。

【18题详解】

该空指下文中提到的“the credit cards，the driver’s license, the cash”，这些都是钱包里装的东西。故选B(content)：所含之物，所容纳之物。

【19题详解】

两小时后有人敲门，丈夫去应门。B选项（answer）切题：应（门）；接（电话）；应答。【20题详解】结合下文的陈述可知，那位女士捡到了作者的钱包，她拾金不昧，将钱包完璧归赵。由此可以推知，该处指“钱包里的钱一分也没有丢失”。故A选项（missing）切题：不见的，丢

失的。

【21题详解】

作者甚至还没有来得及到门口感谢那位女士，她就离开了。该空表示“甚至”，故选D选

项（even）：甚至。

【22题详解】

在网上分享了这个故事之后，作者收到了某个人的来信，这个人确认了那位女士是Erin

Smith。C选项(identify)切题：确认，认出，识别。

【23题详解】

找到了那位拾金不昧的女士，作者当然要“马上，毫不耽搁地”打电话去感谢对方。A选项

（delay）切题：耽搁，延迟。

【24题详解】

作者将钱包落在了公共汽车上，Erin是在一个座位上发现了它。该空表示“发现”，故选D

选项(spot)：发现，认出。

【25题详解】

根据文章最后一段中的“a bitterly cold night”可知，这件事发生在一个寒冷的晚上。同时，

Erin又不认识作者。由此推知，该句应指：Erin估计去一个陌生人的家是一个冒险的举动。

C选项（calculate）正确：估算，估计，预料。

【26题详解】

根据下文中的转折词but可知，该句和she decided to take the chance（她决定冒险）是转折

关系。那么该句应指去一个陌生人家是一个冒险的举动。故B选项（risky）正确：冒险的。

【27题详解】

该句叙述的是Erin当时的想法：“如果我处在那种情况下（指丢了钱包这种情形），我希望

有个人努力地找到我”。该空表示“情况，情形”，故选C选项（situation）：情况，情形。

【28题详解】

作者丢了钱包，对于作者来说，这是一个“危机，危难时刻”。故选A选项（crisis）：危机，

危难时刻。

【29题详解】

Erin捡到了作者的钱包，在归还作者之前，钱包在Erin的手里，Erin暂时“拥有，占有”作者的钱包。故D选项正确。take possession of意为“拥有，占有”。

【30题详解】

Erin把作者的驾照图片发到一个论坛里，想看看是否有人认识作者。该空表示“是否”，故选A选项（if）：是否。

【31题详解】

根据后面的转折词but可知，该句和后面一句（她们想帮忙）转折关系，由此推知，该句指：除了闲聊，作者和那两位妈妈从来没有说过话，即：从未和她们“交换过词语”。B选项（exchange）正确：交换，互换。

【32题详解】

作者曾经读到这样的说法：人们比以往更加四分五裂，即：人们不像以前那样团结，不像以前那样互相帮助了。但是，作者遇到的这些人的行为方式不是那样的。上文中提到的Erin，two moms都是作者遇到的人。故A选项（encounter）正确：偶遇，遇到，邂逅。

【33题详解】

回顾发生的这件事，作者感到很幸运：有人想帮助一个陌生人。C选项（look back）正确：回顾，追忆。

【34题详解】

根据倒数第二段中提到的“people are more divided”可以推知，一般人在捡到别人的钱包后，都不会像Erin那样亲自归还失主。因此该句指：Erin的所作所为远远超越了其他人的行为。该空表示“超过，超越”，故选D选项（beyond）：超过，超越。

【35题详解】

Erin在寒冷的黑夜亲自登门归还作者的钱包，作者对此非常感激。D选项（grateful）正确：感激的。

第二部分：阅读理解（共20小题；每小题2. 5分，满分50分）

阅读下列短文，从每题所给的A、B、C、D国个选项中，选出最佳选项。

A

History Fair Competition

Understanding history is vital to understanding ourselves as a people and as a nation.

History is much more than the study of dusty old objects and events long past. It is an essential part of who we are today and who we will become. Thornton fiddle School History Fair Competition makes understanding history exciting，engaging，and fun！

This Year's Theme

All participants must address how communication or transportation technology has promoted the quality of life for Americans throughout history. To many people，technology means computers，hand-held devices，or vehicles that travel to distant planets. However，technology is also the application of scientific knowledge to solve a problem，touching lives in countless ways.

Individuals or groups may enter one of the following categories：

·Performance

·Documentary（纪实作品）

·Essay Writing

Category Requirements

Performance: A dramatic presentation of the topic no more than 10 minutes long. If special clothes are used，they should truly represent a given period.

Documentary: A visual presentation（such as a video，slide show，or computer project）no more than 10 minutes long. A desktop computer，screen，projector，and loudspeakers will be available. Students must provide their presentations on CDs before Friday，March 23.

Essay Writing: An academic paper of 2，000 to 2，500 words. No illustrations（图解）are allowed. Please do not include covers. A list of references must be included.

Important Dates

January 5 Submit a topic proposal to your history teacher. The teacher may require a second proposal if the first is off-topic or unclear.

February 5 Submit a first draft of your essay，performance script（剧本），or documentary highlights.

February 19 A committee of teachers will evaluate materials and give opinions. Students then have an opportunity to improve their products.

March 9 Submit a final draft of your essay.

March 15 Performance and documentary committee preview

March 24 Thornton Middle School History Fair Competition

7：00A. M-9：00A. M Participants signing in at the gym

10：00A. M. -6：00PM. Competition and judges' review

7：00P.M. Awards ceremony and picnic

36. According to Paragraph 1，what is the major goal of understanding history？

A. To preserve national traditions.

B. To prepare for a history competition.

C. To better know the present and future.

D. To further explore historical mysteries.

37. What is the theme of this year's competition？

A. Technology advances science.

B. Science interacts with technology.

C. Science has made the study of history easy.

D. Technology has improved the life of Americans.

38. Among the items provided by the school for a visual presentation are__________.

A. special clothes and a screen

B. a desktop computer and a CD

C. a projector and special clothes

D. a desktop computer and loudspeakers

39. What would a participant have to do with an essay of 1,500 words to meet the category requirement?

A. Include more information in the essay.

B. Remove the references.

C. Provide a cover for the essay.

D. Explain the details with illustrations.

40. What will the committee of teachers do on February 19?

A. Preview performances and documentaries.

B. Make comments on the materials.

C. Improve the participant's first draft.

D. Collect a second proposal from the participant.

【答案】36. C 37. D 38. D 39. A 40. B

【解析】

这是一篇应用文。短文介绍了桑顿中学举办的历史展览竞赛的相关信息。

【36题详解】

细节理解题。由第一段“It is an essential part of who we are today and who we will become”可知，历史告诉了今天我们是谁，将来我们要成为谁，它是我们重要的组成部分。所以根据第一段，了解历史的主要目地是更好地了解现在和未来。故C选项正确。

【37题详解】

细节理解题。由This Year’s Theme中的“All participants must address how communication or transportaion technology has promoted the quality of life for Amercian throughout history ”可知，所有的参与者都必须要说明通信或运输技术如何在整个历史过程中如何提高了美国人的生活质量。所以今年竞赛的主题是：技术提高了美国人的生活。故D选项正确。

【38题详解】

细节理解题。由Documentary中的“A desktop computer, screen,projector,and loudspeaker will be available”可知，将提供台式电脑、屏幕、投影仪和扬声器。所以学校提供的视觉展示设备包括台式电脑和扩音器。故D选项正确。

【39题详解】

细节理解题。本题采用排除法。由Essay Writing 中的“An academic paper of 2,000 to 2,5000 words ”No illustration are allowed。Please do not include covers. A list of references must be included”可知，要求一份2000至25000字的学术论文。不允许有插图。请不要包括封面。必须包括一份参考文献列表。所以通过排除法，可以看出B，C，D选项都被排除，故一个参与者需要在文章中列入更多的信息才能使一篇1500字的论文满足类别要求。故A选项正确。

【40题详解】

细节理解题。由Important Dates中的“February 19 A committee of teachers will evaluate materials and give opinions ”可知，2月19日，教师委员会将对材料进行评估并发表意见。所以在2月19日。教师委员会将对材料做出评论。故B选项正确。

B

I must have always known reading was very important because the first memories I have as a

child deal with books. There was not one night that I don't remember mom reading me a storybook by my bedside. I was extremely inspired by the elegant way the words sounded.

I always wanted to know what my mom was reading. Hearing mom say," I can't believe what's printed in the newspaper this morning," made me want to grab it out of her hands and read it myself.

I wanted to be like my mom and know all of the things she knew. So I carried around a book, and each night, just to be like her, I would pretend to be reading.

This is how everyone learned to read. We would start off with sentences, then paragraphs, and then stories. It seemed an unending journey, but even as a six-year-old girl I realized that knowing how to read could open many doors. When mom said," The C-A-N-D-Y is hidden on the top shelf,"

I knew where the candy was. My progress in reading raised my curiosity, and I wanted to know everything. I often found myself telling my mom to drive more slowly, so that I could read all of the road signs we passed.

Most of my reading through primary, middle and high school was factual reading. I read for knowledge, and to make A's on my tests. Occasionally, I would read a novel that was assigned, but I didn't enjoy this type of reading. I liked facts, things that are concrete. I thought anything abstract left too much room for argument.

Yet, now that I'm growing and the world I once knew as being so simple is becoming more complex, I find myself needing a way to escape. By opening a novel, I can leave behind my burdens and enter into a wonderful and mysterious world where I am now a new character. In these worlds I can become anyone. I don't have to write down what happened or what technique the author was using when he or she wrote this. I just read to relax.

We're taught to read because it's necessary for much of human understanding. Reading is a vital part of my life. Reading satisfies my desire to keep learning. And I've found that the possibilities that lie within books are limitless.

41. Why did the author want to grab the newspaper out of mom's hands？

A. She wanted mom to read the news to her.

B. She was anxious to know what had happened.

C. She couldn't wait to tear the newspaper apart.

D. She couldn't help but stop mom from reading.

42. According to Paragraph 3，the author's reading of road signs indicates___________

A. her unique way to locate herself

B. her eagerness to develop her reading ability

C. her effort to remind mom to obey traffic rules

D. her growing desire to know the world around her.

43. What was the author's view on factual reading？

A. It would help her update test-taking skills.

B. It would allow much room for free thinking.

C. It would provide true and objective information.

D. It would help shape a realistic and serious attitude to life.

44. The author takes novel reading as a way to___________.

A. explore a fantasy land

B. develop a passion for leaning

C. learn about the adult community

D. get away from a confusing world

45. What could be the best title for the passage？

A. The Magic of Reading

B. The Pleasure of Reading

C. Growing Up with Reading

D. Reading Makes a Full Man

【答案】41. B 42. D 43. C 44. D 45. C

【解析】

本文为夹叙夹议文，作者讲述了自己的读书经历和感悟。

【41题详解】

细节理解题。根据第二段主题句I always wanted to know what my mom was reading.和Hearing mom say … made me want to grab it out of her hands and read it myself可知，作者一直想知道妈妈在读什么。作者抢过妈妈读的报纸，因为作者自己迫切想看一看报纸上写的内容，故选B。

【42题详解】

推理判断题。根据第三段My progress in reading raised my curiosity, and I wanted to know everything，可以推断出，让妈妈开车开慢一点，他能够读出所有路标，正是作者在阅读方

面的进步引起了他的好奇心，想要了解周围的一切，故选D。

【43题详解】

推理判断题。根据第四段第一句Most of my reading through primary, middle and high school was factual reading. I read for knowledge, and to make A’s on my test.可知，小学和中学阶段的阅读都是事实性阅读，读书是为了获取知识，考试得A。因此事实性阅读能够提供真实的客观的信息，故选C。

【44题详解】

细节理解题。根据第五段By opening a novel, I can leave behind my burdens and enter into a wonderful and mysterious world where I am now a new character. In these worlds I can become anyone.( 打开一本小说，我可以摆脱我的负担，进入一个奇妙而神秘的世界，我现在是一个新的角色。在这个世界上，我可以成为任何人。) 可知，阅读小说可以让作者避开复杂的现实而投入到小说中的世界中去，故选D。

【45题详解】

主旨大意题。根据上下文可知，作者以时间顺序回忆了自己的阅读经历和感悟，伴着阅读成长，故选项C符合题意。

C

How does an ecosystem（生态系统）work？What makes the populations of different species the way they are？Why are there so many flies and so few wolves？To find an answer，scientists have built mathematical models of food webs，noting who eats whom and how much each one eats.

With such models，scientists have found out some key principles operating in food webs. Most food webs，for instance，consist of many weak links rather than a few strong ones. When a predator （掠食动物）always eats huge numbers of a single prey（猎物），the two species are strongly linked；when a predator lives on various species，they are weakly linked. Food webs may be dominated by many weak links because that arrangement is more stable over the long term. If a predator can eat several species，it can survive the extinction（灭绝）of one of them. And if a predator can move on to another species that is easier to find when a prey species becomes rare，the switch allows the original prey to recover. The weak links may thus keep species from driving one another to extinction.

Mathematical models have also revealed that food webs may be unstable，where small changes

of top predators can lead to big effects throughout entire ecosystems. In the 1960s，scientists proposed that predators at the top of a food web had a surprising amount of control over the size of populations of other species---including species they did not directly attack.

And unplanned human activities have proved the idea of top-down control by top predators to be true. In the ocean，we fished for top predators such as cod on an industrial scale，while on land，we killed off large predators such as wolves. These actions have greatly affected the ecological balance.

Scientists have built an early-warning system based on mathematical models. Ideally，the system would tell us when to adapt human activities that are pushing an ecosystem toward a breakdown or would even allow us to pull an ecosystem back from the borderline. Prevention is key，scientists says because once ecosystems pass their tipping point（临界点），it is remarkably difficult for them to return.

46. What have scientists discovered with the help of mathematical models of food webs？

A. The living habits of species in food webs.

B. The rules governing food webs of the ecosystems.

C. The approaches to studying the species in the ecosystems.

D. The differences between weak and strong links in food webs.

47. A strong link is found between two species when a predator______

A. has a wide food choice

B. can easily find new prey

C. sticks to one prey species

D. can quickly move to another place

48. What will happen if the populations of top predators in a food web greatly decline？

A. The prey species they directly attack will die out.

B. The species they indirectly attack will turn into top predators.

C. The living environment of other species will remain unchanged.

D. The populations of other species will experience unexpected changes.

49. What conclusion can be drawn from the examples in Paragraph 4？

A. Uncontrolled human activities greatly upset ecosystems.

B. Rapid economic development threatens animal habitats.

C. Species of commercial value dominate other species.

D. Industrial activities help keep food webs stable.

50. How does an early-warning system help us maintain the ecological balance？

A. By getting illegal practices under control.

B. By stopping us from killing large predators.

C. By bringing the broken-down ecosystems back to normal.

D. By signaling the urgent need for taking preventive action.

【答案】46. B 47. C 48. D 49. A 50. D

【解析】

这是一篇说明文。本文介绍了借助食物网的数学模型，科学家们发现了一些在食物网运营的关键原则。科学家们说;因为一个生态系统越过了它的临界点，它们很难再回来。该系统将告诉我们何时适应人类活动，这些活动正将生态系统推向崩溃，或者甚至允许我们将生态系统从边缘拉回来，预防是关键。

【46题详解】

细节理解题。根据第一段的With such models, scientists have found out some key principles operating in food webs.可知，借助食物网的数学模型，科学家们发现了食物网中的一些关键原则。故选B。

【47题详解】

细节理解题。根据第一段的When a predator(掠食动物) always eats huge numbers of a single prey(猎物)，the two species are strongly linked可知，当捕食者总是吃大量的单一猎物，这两个物种是紧密相连的。故选C。

【48题详解】

推理判断题。根据第二段的In the 1960s, scientists proposed that predators at the top of a food web had, a surprising amount of control over the size of populations of other species they did not directly attack可知，处于食物网顶端的食肉动物对它们没有直接攻击的其他物种的种群数量有着惊人的控制，由此可推断出，如果食物链顶级食肉动物的数量大大下降，其他物种的种群将经历意想不到的变化。故选D。

【49题详解】

推理判断题。根据第四段的Ideally the system would tell us when to adapt human activities that are pushing an ecosystem toward a breakdown or would even allow us to pull an ecosystem back

from the borderline可知，人类过度的活动会将生态系统推向崩溃，由此可推断出，不受控制的人类活动极大地破坏了生态系统。故选A。

【50题详解】

细节理解题。根据最后一段的Scientists have built an early-warming system based on mathematical models. Ideally the system would tell us when to adapt human activities that are pushing an ecosystem toward a breakdown or would even allow us to pull an ecosystem back from the borderline.可知，早期变暖系统发出紧急需要采取预防行动的信号帮助我们维持生态平衡。故选D。

D

Would you BET on the future of this man？He is 53 years old. Most of his adult life has been a losing struggle against debt and misfortune. A war injury has made his left hand stop functioning，and he has often been in prison. Driven by heaven-knows-what motives，he determines to write a book.

The book turns out to be one that has appealed to the world for more than 350 years. That former prisoner was Cervantes，and the book was Don Quixote（《堂吉诃德》）. And the story poses an interesting question: why do some people discover new vitality and creativity to the end of their days，while others go to seed long before？

We've all known people who run out of steam before they reach life's halfway mark. I'm not talking about those who fail to get to the top. We can't all get there. I'm talking about people who have stopped learning on growing because they have adopted the fixed attitudes and opinions that all too often come with passing years.

Most of us，in fact，progressively narrow the variety of our lives. We succeed in our field of specialization and then become trapped in it. Nothing surprises us. We lose our sense of wonder. But，if we are willing to lean，the opportunities are everywhere.

The things we learn in maturity seldom involve information and skills We learn to bear with the things we can't change. We learn to avoid self-pity. We learn that however much we try to please，some people are never going to love us-an idea that troubles at first but is eventually relaxing.

With high motivation and enthusiasm，we can keep on learning. Then we will know how important it is to have meaning in our life. However，we can achieve meaning only if we have made

a commitment to something larger than our own little egos（自我），whether to loved ones，to fellow humans，to work，or to some moral concept.

Many of us equate（视……等同于）“commitment” with such “caring” occupations as teaching and nursing. But doing any ordinary job as well as one can is in itself an admirable commitment. People who work toward such excellence whether they are driving a truck，or running a store-make the world better just by being the kind of people they are. They've learned life's most valuable lesson.

51. The passage starts with the story of Cervantes to show that_________.

A. loss of freedom stimulates one's creativity

B. age is not a barrier to achieving one's goal

C. misery inspires a man to fight against his fate

D. disability cannot stop a man's pursuit of success

52. What does the underlined part in Paragraph 3 probably mean？

A. End one's struggle for liberty.

B. Waste one's energy taking risks.

C. Miss the opportunity to succeed.

D. Lose the interest to continue learning.

53. What could be inferred from Paragraph 4？

A. Those who dare to try often get themselves trapped.

B. Those who tend to think back can hardly go ahead.

C. Opportunity favors those with a curious mind.

D. Opportunity awaits those with a cautious mind.

54. What does the author intend to tell us in Paragraph 5？

A. A tough man can tolerate suffering.

B. A wise man can live without self-pity.

C. A man should try to satisfy people around him.

D. A man should learn suitable ways to deal with life.

55. What is the author's purpose in writing the passage？

A. To provide guidance on leading a meaningful adult life.

B. To stress the need of shouldering responsibilities at work.

2019年高考英语试题(全国Ⅰ卷)答案

2019年全国普通高等学校招生统一考试(全国Ⅰ卷) 英语答案 答案速查： 第一部分听力 1–5 BABCA 6–10 CBACC 11–15 BACAB 16–20 ACBAC 第二部分阅读理解 21–25 BDDBA 26–30 ACDCB 31–35 DCABA 36–40 EAGCD 第三部分语言知识运用 41–45 DCCBA 46–50 CDCAB 51–55 DABDA 56–60 CBDAB 61．that 62．poorly 63．of／for 64．to perform 65．have reported 66．belief 67．noting 68．higher 69．the 70．are 第二部分阅读理解 第一节 A 体裁：应用文题材：广告主题：兼职活动 【文章大意】本文介绍了学生在暑期可以兼职的四个项目。 21．B【解析】根据Summer Company中的“Summer Company provides students with hands-on business training and awards of up to $3，000 to start and run their own summer businesses” 可知，这个项目给创业的学生提供高达三千美元的奖金。Summer Company并没有提到在工作前不需要培训，故可排除A项；Summer Company没有提到工作环境，因此可排除C项；对比四个项目可知，这四个项目都是关于暑期工作的信息，Summer Company并没有提供更多的工作信息，因此可排除D项。 22．D【解析】本题问Stewardship Youth Ranger Program要求的参与活动的学生的年龄范围。 根据本部分中的“Who is eligible：Students aged 16 or 17 at time of hire, but not turning 18 before December 31 this year”可知，学生的年龄应该在16–17岁，故选D。选项A 的15–18是Jobs for Youth的年龄要求；选项B的15–24属于Summer Employment Opportunities某些职位对参与者年龄的要求；选项C的15–29是Summer Company对参与者年龄的要求。这三项都不符合题目的要求。 23．D【解析】题干问：哪一个项目对残疾人特别照顾？根据文章的最后一句“Some

2019年最新全国高考理科综合试卷(含答案)

绝密★启封并使用完毕前 2019最新全国高考理科综合试卷（含答案）

理科综合能力测试 本试卷共300分。考试时长150分钟。考生务必将答案答在答题卡上，在试卷上作答无效。考试结束后，将本试卷和答题卡一并交回。 可能用到的相对原子质量：H 1 C 12 N 14 O 16 第一部分（选择题共120分） 本部分共20小题，每小题6分，共120分。在每小题列出的四个选项中，选出最符合题目要求的一项。 1．细胞膜的选择透过性保证了细胞内相对稳定的微环境。 下列物质中，以（自由）扩散方式通过细胞膜的是A．Na+ B．二氧化碳 C．RNA D．胰岛素 2．哺乳动物肝细胞的代谢活动十分旺盛，下列细胞结构与对应功能表述有误 ．．的是 A．细胞核：遗传物质储存与基因转录 B．线粒体：丙酮酸氧化与ATP合成 C．高尔基体：分泌蛋白的合成与加工 D．溶酶体：降解失去功能的细胞组分 3．光反应在叶绿体类囊体上进行。在适宜条件下，向类囊

体悬液中加入氧化还原指示剂DCIP，照光后DCIP由蓝 色逐渐变为无色。该反应过程中 A．需要ATP提供能量 B．DCIP被氧化 C．不需要光合色素参与 D．会产生氧气 4．以下高中生物学实验中，操作不正确 ．．．的是 A．在制作果酒的实验中，将葡萄汁液装满整个发酵装置B．鉴定DNA时，将粗提产物与二苯胺混合后进行沸水浴C．用苏丹Ⅲ染液染色，观察花生子叶细胞中的脂肪滴（颗粒） D．用龙胆紫染液染色，观察洋葱根尖分生区细胞中的染色体 5．用Xho I和Sal I两种限制性核酸内切酶分别处理同一DNA 片段，酶切位点及酶切产物分离结果如图。以下叙述不． 正确 ．．的是

2019全国1卷高考英语试题及答案

绝密★启用前 2019年普通高等学校招生全国统一考试(全国卷I) 英语 注意事项： 1.答卷前，考生务必将自己的姓名、准考证号填写在答题卡上。 2.回答选择题时，选出每小题答案后，用铅笔把答题卡上对应题目的答案标号涂黑。如需改动，用橡皮擦干净后，再选涂其他答案标号。回答非选择题时，将答案写在答题卡上，写在本试卷上无效。 3.考试结束后，将本试卷和答题卡一并交回。 第一部分听力(共两节，满分30分) 做题时，先将答案标在试卷上。录音内容结束后，你将有两分钟的时间将试卷上的答案转涂到答题卡上。 第一节 (共5小题;每小题1.5分，满分7.5分) 听下面5段对话。每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项。听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。

例：How much is the shirt? A. ￡19.15. B. B. ￡9.18. C. C. ￡9.15. 答案是C。 1.Where does this conversation take place? A. In a classroom. B. In a hospital. C.In a museum. 2.What does Jack want to do? A. Take fitness classes. B. Buy a pair of gym shoes. C. Change his work schedule. 3.What are the speakers talking about? A. What to drink.

2019高考浙江英语试题及答案

浙江卷 阅读理解 A 【文章大意】本文讲述了Zac归还紫心勋章的故事。 21.A【解析：由第二段中“Zac knows the meaning of a Purple Heart－he earned one himself in a war as a soldier”可知，Zac 的紫心勋章是他自己得到的。而被他母亲在古董店意外得到的是Adeline保存着的勋章。】 22.B【解析：mean business意为“认真的；严肃的”。由Zac的话“To drive eight hours to come to see me”也可猜测到Zac能理解Adeline对于勋章的重视程度。】 23.D【解析：倒数第二段中Adeline的话说明Adeline一开始并不明白为何她的父母十分看重家里的紫心勋章，直到她长大了，开始怀念兄长时才明白这枚勋章承载的意义。所以是对兄长的怀念使Adeline珍藏着勋章。】 B 【文章大意】本文通过一个街头活动呼吁人们要保有善心、乐善好施。 24.C【解析：no strings attached指“无附加条件；不求回报”；without conditions意为“无条件”，故选C。由后文“Give What You Can”和“many others pinned their own cash to the board”也可体现。】 25.B【解析：前文说“People of all ages, races, and socio-economic（社会经济的）backgrounds”可知有很多人都参与到了这个项目中。因此后文新娘的事情是就此进行进一步的说明。】26.D【解析：由文章最后Bridges的话“Some days you need a helping hand and some days you can be the one giving the helping hand.”可知这个项目的主要目的是鼓励人们心存善意、伸出援手。】 C 【文章大意】本文分析了加利福尼亚高大乔木数量减少的原因。 27.A【解析：由第二段首句可以看出高大树木的数量锐减，且没有地区能够幸免于难，整体形势十分严峻，故选A。】 28.D【解析：第三段包含了四个选项的内容，“Aggressive wildfire control”尽管控制野火但是导致小树和高大的树木争抢生长资源。】 29.C【解析：倒数第一对缺水原因进行分析。由“...have been rising temperatures, which cause trees to lose more water to the air, and earlier snowmelt, which reduces the water supply...”可知选C。】 30.A【解析：本文主要摆出了加利福尼亚州高大树木数量减少的现状并且分析了原因，故A 项最贴合文意。】 七选五 【文章大意】本文简单介绍了对rock music影响深远的乐队——the Beatles。 31.C【解析：由下一句中“At that time”可知此处应该谈及时间段。】 32.B【解析：前文提到了“extremely popular in England”，此处应该承接这个话题将他们是有多受欢迎，故选B。】 33.A【解析：下一句提到了“the Americans”所以此处选提及了去美国的A项。】 34.G【解析：空后句主语为“The concert”，故该空应当也是concert相关，故选G。】 35.E【解析：空前一句是感谢the Beatles为rock and roll做出的卓越贡献，故表现the Beatles 对其他乐队影响的E项更符合文章思路。】

2019年高考英语试题及答案(全国1卷)

2019年高考英语试题及答案（全国1卷） 2019年普通高等学校招生全国统一考试英语 本试卷分第一卷（选择题）和第二卷（非选择题）两部分。 考试结束后，将本试卷和答题卡一并交回。 第一卷 注意事项： 1. 答第一卷前，考生务必将自己的姓名、准考证号填写在本试卷和答题卡相对应的位置上。 2. 选出每小题答案后，用铅笔把答题卡上对于题目的答案标 号涂黑。如需改动，用橡皮擦干净后，再选涂其他答案标号。不能答在本试卷上，否则无效。 第一部分听力（共两节，满分30分） 做题时，先将答案标在试卷上。录音内容结束后，你将有两 分钟的时间将试卷上的答案转涂到答题卡上。 听下面5段对话。每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。 听完每段对话后，你都有10秒钟的时间来回来有关小题和 阅读下一小题。每段对话仅读一遍。 例：How much is the shirt? A. ￡19.15. B. ￡9.15 C. ￡9.18. 答案是B。 1. What does the man like about the play?

A.The story. B.The ending. C.The actor. 2.Which place are the speakers trying to find? A.A hotel. B.A bank. C.A restaurant. 3.At what time will the two speakers meet? A. 5:20 B. 5:10 C.4:40 4.what will the man do ? A.Change the plan B.Wait for a phone call C.Sort things out 5.What does the woman want to do ? A.See a film with the man. B. Offer the man some help C.Listen to some great music. 第二节（共15小题：每小题 1.5分，满分22.5分） 请听下面5段对话。每段对话后有几个小题，从题中所给出 的A、B、C三个选项种选出最佳选项，并标在试卷的相应 位置。听每段对话前，你将有时间阅读各个小题。，每小题5秒钟；听完后，各小题给出5秒钟的作答时间。每段对话读 两遍。 听第6段材料，回答6、7题。 6.Where is Ben？ A. In the kitchen. B. At school. C. In the park. 7.What will the children in the afternoon? A. Help set the table. B. Have a party. C. Do their homework. 听第7段材料，回答第8、9题

2019年北京市高考微写作题目及写作指导

2019年北京市高考微写作题目及写作指导 微写作（10分） 从下面三个题目中任选一题，按要求写作。 ①《呐喊》中哪一篇作品的结尾，令你印象深刻，给你带来启迪？要求：复述大致内容，陈述理由，150字左右。 ②在《红岩》《平凡的世界》《老人与海》中，选择一位“内心强大”的人，写出其“内心强大”的表现。要求：写出人物姓名，150字左右。 ③在《边城》《红楼梦》中，谁是“心清如水”的人？写一首诗或一段抒情文字赞美他（她）。要求：写出赞美对象的姓名和特点，不超过150字。 22. 解析 ①《呐喊》为北京名著阅读作品，要求考生选择篇目中“令你印象深刻”的结尾，复述大致内容。 备注《呐喊》短篇小说集的篇目： 《狂人日记》《孔乙己》《药》《明天》《一件小事》《头发的故事》《风波》《故乡》《端午节》《白光》《兔和猫》《鸭的喜剧》 对考生写作要求，要复述所选小说的结尾；如结尾的形式可特点多样，如写《一件小事》结尾的画龙点睛，可写《阿Q正传》阿Q画圆的意味深长、《明天》《药》结尾的意蕴之丰等，点明它让你印象深刻，内容上可写对“自我””国民“的思考等等，突出陈述给考生的启迪，论述理由即可。 ②首先需要考生明确何为“内心强大”。一个“人”字，一撇一捺，既要有物质的支撑，也需要精神的支持。所谓“内心强大”更侧重在遭遇到“人生不能承受之重”时，所爆发出的精神的、情感的力量。这样的人，身体可以被击倒，但精神永不垮。名著《红岩》《平凡的世界》便塑造了一个或一定特定时期这个主题的群体形象，《老人与海》则塑造了美国“垮掉一代”时期急需的一种精神，而“老人桑提亚哥”便是这一形象的集中体现。涉及到名著阅读，我们不仅要识其人，更要知其事、穷其细节。而此题要求选择一位人物，可写桑提亚哥某次“斗鲨”的的细，尤其是细节，而选《红岩》《平凡的世界》，人物众多，可选面宽，择其一人，以点带面，言简意赅。多元的选择空间，便于学生展示，书写华章，纵横考场。 ③试题要求考生围绕《边城》《红楼梦》中某一“心清如水”的人，写出对其人的赞美的抒情性文字。 考生首先要解读何为“心清如水”——不浮躁，淡泊名利，心灵纯净。写出《边城》或《红楼梦》中符合这一特点的人物，如《红楼梦》中的林黛玉，史湘云，《边城》中的翠翠等；要写出心清如水在这个人物身上的具体体现，可描摹为几个特点——即“心清如水”的在人物身上的具体体现，并在此基础上运用抒情性语句，亦可结合在当下的人文价值，表达考生对这一形象的赞美之情。

2019年高考理综试卷(全国I卷)生物部分

2019年高考理综试卷（全国I卷）生物部分 一、选择题（36分） 1.细胞凋亡是细胞死亡的一种类型。下列关于人体中细胞凋亡的叙述，正确的是【】A：胎儿手的发育过程中不会发生细胞凋亡 B：小肠上皮细胞的自然更新过程中存在细胞凋亡现象 C：清除被病原体感染细胞的过程中不存在细胞凋亡现象 D：细胞凋亡是基因决定的细胞死亡过程，属于细胞坏死 2.用体外实验的方法可以合成多肽链，已知苯丙氨酸的密码子是UUU，若要在体外合成同位素标记的多肽链，所需的材料组合是【】 ①同位素标记的tRNA ②蛋白质合成所需的酶③同位素标记的苯丙氨酸 ④人工合成的多聚尿嘧啶核苷酸⑤除去了DNA和tRNA细胞裂解液 A：①②④B：②③④C：③④⑤D：①③⑤ 3.将一株质量为20g的黄瓜幼苗栽种光照等适宜的环境中，一段时间后植株达到40g，其增加的质量来自于【】 A：水、矿质元素和空气B：光、矿质元素和水 C：水、矿质元素和土壤D：光、矿质元素和空气 4.动物受到惊吓刺激时，兴奋经过反射弧中的传出神经作用于肾上腺髓质，使其分泌肾上腺素；兴奋还通过传出神经作用于心脏。下列相关叙述错误的是【】 A：兴奋是以电信号的形式在神经纤维上传导的 B：惊吓刺激可以作用于视觉、听觉或触觉感受器 C：神经系统可直接调节，也可通过内分泌活动间接调节心脏活动 D：肾上腺素分泌增加会使动物警觉性提高、呼吸频率减慢、心率减慢 5.某种二倍体高等植物的性别决定类型为XY型。该植物有宽叶和窄叶两种类型，宽叶对窄叶为显性。控制这对相对性状的基因（B/b）位于X染色体上，含有基因b的花粉不育。下列叙述错误的是【】 A：窄叶性状只能出现在雄株中，不可能出现在雌株中 B：宽叶雌株和宽叶雄株杂交，子代中可能出现窄叶雄株 C：宽叶雌株和窄叶雄株杂交，子代中既有雌株又有雄株 D：若亲本杂交后子代雄株均为宽叶，则亲本雌株是纯合子 6.某实验小组用细菌甲（异养生物）作为材料来探究不同条件下种群增长的特点。设计了三个实验组，每组接种相同数量的细菌甲后进行培养，培养过程中定时更新培养基，三组的更新时间间隔分别为3h、10h、23h，得到a、b、c三条种群增长曲线，如图所示。下列叙述错误的是【】 A：细菌甲能够将培养基中的有机物分解为无机物 B：培养基更换频率的不同，可用来表示环境资源量的不同 C：在培养到23h之前，a组培养基中的营养和空间条件都是充裕的 D：培养基更新时间间隔为23h时，种群增长不会出现Ｊ型增长阶段

2019年北京卷高考作文及解析.docx

2019年北京卷高考作文：韧性、色彩 从下面两个题目中任选一题，按要求作答。不少于700字。将题目抄在答题卡上。 ①“韧性”是指物体柔软坚实、不易折断的性质。中华文明历经风雨，绵延至今，体现出“韧”的精神。回顾漫长的中国历史，每逢关键时刻，这种文明的韧性体现得尤其明显。中华民族的伟大复兴，更需要激发出这种文明的韧性。 请以“文明的韧性”为题，写一篇议论文。可以从中国的历史变迁、思想文化、语言文字、文学艺术、社会生活及中国人的品格等角度，谈谈你的思考。 要求：观点明确，论据充分，论证合理。 ②色彩，指颜色；不同的色彩常被赋予不同的意义。2019年，我们隆重纪念五四运动100周年，欢庆共和国70华诞。作为在这个特殊年份参加高考的学生，你会赋予2019年哪一种色彩，来形象地表达你的感受和认识？ 请以“2019的色彩”为题，写一篇记叙文。 要求：思想健康，内容充实，感情真挚，运用记叙、描写和抒情等多种表达方式。 【权威专家解析】 北京卷作文话题１保持了最近几年高考作文题目的相对稳定性。 从命题方向角度看，坚持了“立德树人”的考察方向，重点在于引领考生以及之后的历届学子要始终坚持中华传统文化和社会主义核心价值的学习方向。 【解析话题1：韧性】 从命题内容角度看，“文明的韧性”，属偏正式短语，韧性是核心语，是个抽象名词，考生写作时，可以化抽象为具体；“文明”是修饰限制成分，规定了“韧性”的方向与维度。整合起来看，中华民族之所以能够屹立于世界民族之林，靠的就是中华文明的韧性。 从命题形式角度看，与往年一致，继续采用材料+题目的格式。题目是关键，材料是作文立意与行文的引导与梯子。考生如果能够充分利用材料的提示与引领，完全可以创作出一篇出色的作文。材料第一句话——“韧性”是指物体柔软坚实、不易折断的性质——给我们明确了核心词“韧性”的定义；材料第二句话——中华文明历经风雨，绵延至今，体现出“韧”的精神——可以理解为我们写作的视角与范围；材料第三句话——回顾漫长的中国历史，每逢关键时刻，这种文明的韧性体现得尤其明显——可以充分利用起来，作文我们作文的重点部分，“关键时刻”，都有那些时刻？这些时刻，文明的韧性如何起到了关键性作用？材料第四句话——中华民族的伟大复兴，更需要激发出这种文明的韧性——我们现阶段要实现中华民族伟大复兴，文明的韧性又能起到怎样的关键作用？当材料的这些方面和角度都充分考虑清楚的时候，一篇议论文呼之欲出，接下来就是根据自己的特长与才情，写出富有自己特色的高考优秀作文。 在平时的备考中，考生多注意了读写结合的训练，打通读写一直是学习的重中之重。平时的阅读

2019年浙江省高考英语试卷(解析版)

2019年浙江省高考英语试卷 一、阅读理解（本大题共10小题，共25.0分） A Zachariah Fike has an unusual hobby．He finds old military（军队的）medals for sale in antique stores and on the Internet．But unlike most collectors，Zac tracks down the medals' rightful owners，and returns them． His effort to reunite families with lost medals began with a Christmas gift from his mother，a Purple Heart with the name Corrado A．G．Piccoli，found in an antique shop．Zac knows the meaning of a Purple Heart-he earned one himself in a war as a soldier．So when his mother gave him the medal，he knew right away what he had to do． Through the Internet，Zac tracked down Corrado's sister Adeline Rockko．But when he finally reached her，the woman flooded him with questions："Who are you？What antique shop？" However，when she hung up，she regretted the way she had handled the call．So she called Zac back and apologized．Soon she drove to meet Zac in Watertown，N．Y．"At that point，I knew she meant business，" Zac says．"To drive eight hours to come to see me．" The Piccolis grew up the children of Italian immigrants in Watertown．Corrado，a translator for the Army during WWII，was killed in action in Europe． Before hearing from Zac，Adeline hadn't realized the medal was missing．Like many military medals，the one Zac's mother had found was a family treasure．" This medal was very precious to my parents．Only on special occasions（场合）would they take it out and let us hold it in our hands，" Adeline says． As a child，Adeline couldn't understand why the medal was so significant．"But as I grew older，" Adeline says，"and missed my brother more and more，I realized that was the only thing we had left．" Corrado Piccoli's Purple Heart medal now hangs at the Italian American Civic Association in Watertown． Zac recently returned another lost medal to a family in Alabama．Since he first reunited Corrado's medal，Zac says his record is now 5 for 5． 1.Where did Zac get a Purple Heart medal for himself？______ A. In the army． B. In an antique shop． C. From his mother． D. From Adeline Rockko． 2.What did Zac realize when Adeline drove to meet him？______ A. She was very impolite． B. She was serious about the medal． C. She suspected his honesty． D. She came from a wealthy family． 3.What made Adeline treasure the Purple Heart？______ A. Her parents' advice． B. Her knowledge of antiques． C. Her childhood dream． D. Her memory of her brother． B Money with no strings attached. It's not something you see every day. But at Union Station in Los Angeles last month, a board went up with dollar bills attached to it with pins and a sign that read, "Give What You Can,Take What You Need." People quickly caught on. And while many took dollars, many others pinned their own cash to the board. "People of all ages, races, and socio-economic(社会经济的) backgrounds gave and took," said Tyler Bridges of The Toolbox, which created the project. "We even had a bride in her wedding dress come up to the board and take a few dollars." Most of the bills on the board were singles, but a few people left fives,tens and even twenties.The video clip(片段) shows one man who had found a $20 bill pinning it to the board. "What I can say for the folks that gave the most,is that they were full of smiles," Bridges said. "There's a certain feeling that giving can do for you and that was apparent in those that gave the most." Most people who took dollars took only a few, but Bridges said a very small number took as much as they could. While the clip might look like part of a new ad campaign, Bridges said the only goal was to show generosity and sympathy. He added that he hopes people in other cities might try similar projects and post their own videos on the Internet. "After all, everyone has bad days and good days." he said. "Some days you need a helping hand and some days you can be the one giving the helping hand." 4.What does the expression "Money with no strings attached" in Paragraph 1 mean? A. Money spent without hesitation. B. Money not legally made. C. Money offered without conditions. D. Money not tied together. 5.What did Bridges want to show by mentioning the bride? A. Women tended to be more sociable. B. The activity attracted various people. C. Economic problems were getting worse. D. Young couples needed financial assistance. 6.Why did Bridges carry out the project? A. To do a test on people?s morals. B. To raise money for his company. C. To earn himself a good reputation. D. To promote kindness and sympathy. C California has lost half its big trees since the 1930s, according to a study to be published Tuesday and climate change seems to be a major factor(因素). The number of trees larger than two feet across has declined by 50 percent on more than 46,000 square miles of California forests, the new study finds. No area was spared or unaffected, from the foggy northern coast to the Sierra Nevada Mountains to the San Gabriels above Los Angeles. In the Sierra high country, the number of big trees has fallen by more than 55 percent; in parts of southern California the decline was nearly 75 percent. Many factors contributed to the decline, said Patrick McIntyre, an ecologist who was the lead author of the study. Woodcutters targeted big trees. Housing development pushed into the woods. Aggressive wildfire control has left California forests crowded with small trees that compete with big trees for resources(资源). But in comparing a study of California forests done in the 1920s and 1930s with another one between 2001 and 2010, McIntyre and his colleagues documented a widespread death of big trees that was evident even in wildlands protected from woodcutting or development. The loss of big trees was greatest in areas where trees had suffered the greatest water shortage. The researchers figured out water stress with a computer model that calculated how much water trees were getting in comparison with how much they needed, taking into account such things as rainfall, air temperature, dampness of soil,and the timing of snowmelt(融雪). Since the 1930s, McIntyre said,the biggest factors driving up water stress in the state have been rising temperatures,which cause trees to lose more water to the air, and earlier snowmelt, which reduces the water supply available to trees during the dry season. 7.What is the second paragraph mainly about? A. The seriousness of big-tree loss in California. B. The increasing variety of California big trees. C. The distribution of big trees in California forests. D. The influence of farming on big trees in California. 8.Which of the following is well-intentioned but may be bad for big trees? A. Ecological studies of forests. B. Banning woodcutting. C. Limiting housing development. D. Fire control measures. 9.What is a major cause of the water shortage according to McIntyre? A. Inadequate snowmelt. B. A longer dry season. C. A warmer climate. D. Dampness of the air. 10.What can be a suitable title for the text?

2019年高考理综全国1卷(附答案)

2019年普通高等学校招生全国统一考试 理科综合能力测试 注意事项： 1．答卷前，考生务必将自己的姓名、准考证号填写在答题卡上。 2．回答选择题时，选出每小题答案后，用铅笔把答题卡上对应题目的答案标号涂黑，如需改动，用橡皮擦干净后，再选涂其它答案标号。回答非选择题时，将答案写在答题卡上，写在本试卷上无效。。 3．考试结束后，将本试卷和答题卡一并交回。 可能用到的相对原子质量：H 1 C 12 N 14 O 16 Mg 24 S 32 Fe 56 Cu 64 一、选择题：本题共13个小题，每小题6分。共78分，在每小题给出的四个选项中，只有 一项是符合题目要求的。 1．细胞凋亡是细胞死亡的一种类型。下列关于人体中细胞凋亡的叙述，正确的是A．胎儿手的发育过程中不会发生细胞凋亡 B．小肠上皮细胞的自然更新过程中存在细胞凋亡现象 C．清除被病原体感染细胞的过程中不存在细胞凋亡现象 D．细胞凋亡是基因决定的细胞死亡过程，属于细胞坏死 2．用体外实验的方法可合成多肽链。已知苯丙氨酸的密码子是UUU，若要在体外合成同位素标记的多肽链，所需的材料组合是 ①同位素标记的tRNA ②蛋白质合成所需的酶 ③同位素标记的苯丙氨酸 ④人工合成的多聚尿嘧啶核苷酸 ⑤除去了DNA和mRNA的细胞裂解液 A．①②④ B．②③④ C．③④⑤ D．①③⑤ 3．将一株质量为20 g的黄瓜幼苗栽种在光照等适宜的环境中，一段时间后植株达到40 g，其增加的质量来自于

A．水、矿质元素和空气 B．光、矿质元素和水 C．水、矿质元素和土壤 D．光、矿质元素和空气 4．动物受到惊吓刺激时，兴奋经过反射弧中的传出神经作用于肾上腺髓质，使其分泌肾上腺素；兴奋还通过传出神经作用于心脏。下列相关叙述错误的是 A．兴奋是以电信号的形式在神经纤维上传导的 B．惊吓刺激可以作用于视觉、听觉或触觉感受器 C．神经系统可直接调节、也可通过内分泌活动间接调节心脏活动 D．肾上腺素分泌增加会使动物警觉性提高、呼吸频率减慢、心率减慢 5．某种二倍体高等植物的性别决定类型为XY型。该植物有宽叶和窄叶两种叶形，宽叶对窄叶为显性。控制这对相对性状的基因（B/b）位于X染色体上，含有基因b的花粉不育。下列叙述错误的是 A．窄叶性状只能出现在雄株中，不可能出现在雌株中 B．宽叶雌株与宽叶雄株杂交，子代中可能出现窄叶雄株 C．宽叶雌株与窄叶雄株杂交，子代中既有雌株又有雄株 D．若亲本杂交后子代雄株均为宽叶，则亲本雌株是纯合子 6．某实验小组用细菌甲（异养生物）作为材料来探究不同条件下种群增长的特点，设计了三个实验组，每组接种相同数量的细菌甲后进行培养，培养过程中定时更新培养基，三组的更新时间间隔分别为3 h、10 h、23 h，得到a、b、c三条种群增长曲线，如图所示。 下列叙述错误的是 A．细菌甲能够将培养基中的有机物分解成无机物

2019高考英语预测试题

高考英语预测试题 第二部分英语知识运用（共两节，满分35分） 第二节完形填空（共20小题；每小题1.5分，共30分） 阅读下面短文，掌握其大意，从每题所给的A、B、C、D四个选项中，选出最佳选项，并在答题卡上将该项涂黑。 I learned about life from an ant farm. When I was seven years old, my family tried to __36__ an ant farm at home. First, we put clean sand in a thin glass box, and then we brought some ants from the backyard and placed them into the __37__ home. Shortly after the new __38__ were dropped into the glass structure, they got to work making tunnels. I was amazed that each one knew __39__ what to do. After hours of staring, I realized that the ants had particular given jobs. With my mom’s help, I kept a journal of what happened each day and __40__ the ants. My favorite was the biggest, Cinderella. I drew a picture of her in my journal, which I still have. On day five a disaster __41__ the ant farm. While I was __42__ the ants, I had put my face so close to the structure that I accidentally tipped it over, __43__ in all the tunnels. Although the ants __44__ their earthquake, one by one they began to die. I was __45__ as I watched them give up their tunnel-building to carry the bodies to a corner of the farm. My mother reported that the ants were dying of “frustration”—feeling annoyed and impatient as they couldn’t control the situation. They simply could not __46__ the reality that their tunnels had been destroyed. Cinderella was the last to die; she did so while carrying a dead ant on her back. Although much time has passed, I still think of that ant farm. Mom had hoped it would teach me about the natural world, __47__ it taught me much more. __48__ the years, I came to realize the ants were a study in the benefits of __49__. Working together, they were able to create a(n) __50__ world for themselves. I also learned that they should be __51__ for their hard work. Day in and day out, each labored at their task. The ant farm demonstrated that teamwork and perseverance are indeed two key __52__ to success. But there was an even larger lesson that I did not __53__ until recently: Disaster is a natural part of life, and must be __54__. Unlike the ants, humans cannot give up when they face __55__. Unlike the ants, we have to realize that if a tunnel caves in, we just have to build another. 36. A. get B. buy C. run D. find 37. A. empty B. new C. strange D. distant 38. A. guests B. settlers C. friends D. members 39. A. probably B. roughly C. exactly D. normally