2018版高考英语大一轮复习Unit1Friendship复习练案新人教版必修1.docx

Unit 1 Friendship

Ⅰ . 阅读理解

A

(2017 ·安徽省亳州市一模) 导学号Happiness spreads readily through the social networks of family members, friends and neighbors, U．say in a study published Thursday.

Knowing someone who is happy makes you percent more likely to be happy yourself, according to the study by scientists from Harvard University and the University of

California at San happy friend increases your odds of happiness by percent, and

even your neighbor's friend can give you a percent boost(提高)，said the study appearing online in the British Medical Journal.

The researchers discovered that happy people living close by were most effective

in spreading their good also found the happiest people were at the center of large social networks.

The researches based their conclusion on a study of the relationship of nearly

5,000 results showed that a happy friend who lives within 0.8 km makes you 42 percent more likely to be happy that same friend lives 3.2 km away, his impact drops to 22

friends who are more distant have no clear , happy brothers or sisters make you 14

percent more likely to he happy yourself,but only if they live within

l ． 6 km.Happy couples provide an 8 percent boost if they live under the same neighbors who are

happy make you 34 percent more likely to be happy too, but no other neighbors have

an effect, even if they live on the same block.

In many regards, the researchers concluded, happiness is like an infectious

disease. “Your emotional slate depends not just on actions and choices that you make, but also on actions and choices of other people, many of which you don't even

know.”said A ．Christakis, a physician and medical sociologist at Harvard who

co-wrote the study.

1． What's the main idea of the passage？ __B__

A． Good emotions are likely to keep you healthy.

B． Happy people around are likely to make us happy.

C． The more friends one has, the happier he will become.

D． Family members depend on each other for happiness.

解析：主旨大意题。由第一段可知，与快乐的人为伴会让你快乐。

？ __A__ 2． Which of the following is most likely to make one

happy A． His happy friend who lives next door to him.

B． His happy brother who lives in another city.

C． A happy couple who live in the same block.

D． His neighbor's friend who is always cheerful.

解析：推理判断题。由第三段第一句话“ The rese archers discovered that happy people living close by were most effective in spreading their good cheer.”可推知，住得

近的快乐的人更容易传播快乐给别人。

3 ． The underlined word“odds”in Paragraph 2 is the closest in meaning to “__B__. ”

A． style B． chance

C． speed D． effect

解析：猜测词义题。快乐的朋友能让你的快乐几率提高个百分点。

4． ' words in the last paragraph suggest that__C__.

A． people's actions and choices can lead to happiness.

B． people are the masters of their own feelings and emotions.

C． people's feelings are not always determined by themselves.

D． people should avoid being affected by others' actions and choices.

解析：推理判断题。由最后一段第二句话“Your emotional slate depends not just

on actions and choices that you make, but also on actions and choices of other people,

many of which you don't even know”可推知，人们的情感是可以传染的，所以不仅仅只受

自己决定。

B

(2017 ·广东五校协作体第一次联考)导学号

my life Two of the saddest words in the English language are “if only ”． I live

with the goal of never having to say those words, because they convey regret, lost

opportunities, mistakes, and disappointment.

My fat her is famous in our family for saying,“Take the extra minute to do it right.” I always try to live by the“extra minute” my children were young and

likely to cause accidents, I always thought about what I could do to avoid an

“if only ” moment, whether i t was something minor like moving a cup full of hot coffee

away from the edge of a counter, or something that required a little more work such

as taping padding (衬垫 ) onto the sharp corners of a glass coffee table.

I don't only avoid those“if only ” moments when it comes to's equally important to avoid“if only” in our personal all know people who lost a loved one and

regretted that they had foregone an opportunity to say “I love you” or “I forgive you. ” When my father announced he was going to the eye doctor across from my office on Good Friday, I told him that it was a holiday for my company and I wouldn't be

then I thought about the fact that he's84 years old and I realized that I shouldn't give up an opportunity to see called him and told him I had decided to go to work

on my day off after all.

I know there will still be occasions when I have to say “if only ” about something, but my life is definitely better because of my policy of doing everything possible

to avoid that even though it takes an extra minute to do something right, or it

occasionally takes an hour or two in my busy schedule to make a personal connection, I know that I'm doing the right 'm buying myself peace of mind and that's the best

kind of insurance for my emotional well-being.

文章大意：本文讲述了作者认为英语中最悲伤的两个词语是“if only ”，因为他们表达了遗憾。父亲在我小的时候经常让我提前做一些能防止意外发生的事，因此我懂得珍惜现在

所拥有的一切，而且我知道我正在做对的事。

5．Which of the following is an example of the“extra minute”rule？__D__ A． Start the car the moment everyone is seated.

B． Leave the room for a minute with the iron working.

C． Wait for an extra minute so that the steak tastes better.

D． Move an object out of the way before it trips someone.

解析：推理判断题。由第二段whether it was something minor like

of hot coffee away from the edge of a counter, or something that required a little

moving a cup full

more work such as taping padding( 衬垫 ) onto the sharp corners

可知在物体绊住别人之前将它移动属于the “extra minute” rule 6． The author decided to go to her office on Good Friday to__B__.

A． keep her appointment with the eye doctor

B． meet her father who was already an old man of a glass

，故选

coffee

D。

table.

C． join in the holiday celebration of the company

D． finish her work before the deadline approached

解析：细节理解题。由第三段“ When my father announced he was going to the eye doctor

across from my office on Good Friday ， I told him that it was a holiday for my company and I wouldn't be then I thought about the fact that he's 84years old and I realized that I shouldn't give up an opportunity to see him.”可知我在周五休息的候去工作

是了去看我的已是个老人的爸爸，故

7．The underlined word “foregone ”B。

in Paragraph 3 is closest in meaning to__C__.

A． avoided B． lacked

C． abandoned

解析：猜意。由第三段Weall that they had foregone an opportunity to say

D． took

know people who lost a loved one and regretted “I love you” or“I forgive you.”

可知我都知道失去人的人当初放弃了一个机会“我你”或“我原你”，划指“放弃”与C同，故C。

8． What is the best title for the passage A． The Emotional Well-being

C． The Most Useful Rule

？ __B__

B． The Two Saddest Words D． The Peace of Mind

解析：主旨大意。本文英中两个最悲的展开叙述，故B。Ⅱ. 法填空学号

下列短文，在空白填入 1 个适当的或括号内的正确形式。

I never thought I (be)friends

(2016 ·莆田高中班教学量改) with an Israeli girl,because Israel always seemed

so it just happened (natural)．

In September, I took part in a cultural exchange activity at my school and hosted Israeli girl called Maayan, my best foreign friend ever.

When I first met her, she told me in a very embarrassing way that she (leave)

her luggage at the had to contact the airport and asked them to send to my incident brought us closer, because we can both be (be) no better and faster way to make

friends than sharing the same shortcoming.

We did everything that close friends would do during her stay in found(amaze) to have so much in common with someone from somewhere far away from (exchange)

knowledge of our countries'traditions and had to be apart we knew the airport, we made the promise to send emails since then (keep) in touch.

解析：

1．此表示“从来没有想到会做??”，故从句用去将来。

2．修happen 用副。

3．泛指“一个以色列女孩”，用不定冠；Israeli是以元音音素开的，故填an。

4． leave her luggage这一动作发生在过去动作told之前，应用过去完成时。

5． send的宾语指的是前面提到的行李，故用代词it代替。

6．there be 句式中的be动词与其后的名词way 一致，句子用一般现在时表示客观事实，

故填is。

7．修饰指代事物的宾语it ，作补语，填形容词amazing“令人惊讶的”。

8．由本段前面句子的时态判断可知，exchange knowledge是过去的事情，本句应用一

般过去时。

9．本句意为“不知不觉中我们就不得不要分开了”，be apart应是在knew 之前发生，故填before。

10．由 since then可知句子用现在完成时。

Ⅲ. 短文改错导学号

假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共

有 10 处错误，每句中最多有两处。错误涉及一个单词的增加，删除或修改。

增加：在缺词处加一个漏字符号 ( ∧) ，并在其下面写出该加的词。

删除：把多余的词用(\) 划掉。

修改：在错的词下画一横线，并在该词下面写出修改后的词。

注意： 1. 每处错误及其修改均仅限一词；

2．只允许修改10 处，多者( 从第11 处起 ) 不计分。

(2016 ·浙江衢州五校联考)

I have a good friend who's name is Han is our monitor and one of the excellent

students in our she is clever, but she works very have a lot on common and have

a lot to talk evening she told me that something happened when her parents was was doing her homework while she smelt something stopped look out of the window and find

a cloud of smoke coming out of her neighbor's called119 minutes later,the firemen came and put out neighbor was very thankful for her help.

答案：

I have a good friend who's name is Han is our monitor and one of the excellent

whose

students in our she is clever, but she works very have a lot on common and have

a lot doing find found

in

to talk evening she told me that something happened when her parents was was

were

her homework while she smelt something stopped∧ look out of the window and when to

a cloud of smoke coming out of her neighbor's called 119immediate.Ten

immediately

later, the firemen came and put out ∧ neighbor was very thankful for her the

help.

1．命立意：考定从句引。

解析： who's →whose此是一个定从句，修friend, whose在从句中作定修name。

2．命立意：考。

解析：除but在although/though引的状从句中，它与but不能同存在。

3．命立意：考介。

解析：第三： on→in have a lot in common是固定短，意“有多共同之”。

4．命立意：考主一致。

解析：第四： was→were状从句中的主her parents是复数，故其系改were。

5．命立意：考固定搭配。

解析：第五： while →when be doing...when...“正在做某事，/ 突然??”。

6．命立意：考非。

解析：第六： stopped 后加 to句意：她停下来去看窗外。stop to do sth. 意“停

下来去做某事”。

7．命立意：考。

解析：第七： find →found and 前后的并列的是一致的，前面是stopped，故后面也用去式found 。

8．命立意：考副。

解析：第八： immediate →immediately修called用副。

9．命立意：考冠。

解析：第九： out 后加 the此表特指，用定冠。

10．命立意：考冠。

解析：第十： His →Her根据上下文人称关系可知用Her。

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2018届高三第二次联考试题(4月) 理科综合(物理部分)含答案

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2018版高考英语(人教通用)大一轮复习-满分必背+

必修一Unit 1Friendship Ⅰ.常考单词必背 1．upset adj.心烦意乱的；不安的；不适的vt.(upset，upset) 使不安；使心烦；打翻，碰倒；打乱 She was upset about losing her job. 她正为失去工作而心烦意乱。 Losing the ring upset her very much. 遗失戒指使她很心烦意乱。 [快速闪记] be upset about/over/at sth 为某事心烦 upset oneself about sth 为某事而烦恼 2．ignore vt.不理睬；忽视 Either she didn't see me wave or she ignored me on purpose.要么她没看见我招手，要么就是故意不理我。 [快速闪记] ignorant adj.不了解的，无知的 ignorance n．不了解，无知 3．concern vt.(使)担忧；涉及；关系到n．担心；关注；(利害)关系 The accident was concerned with the bus driver. 这次事故与公交车司机有关。 There is some cause for concern but no need for alarm. 是有点令人忧虑，但不必惊慌。 [快速闪记] concerned adj.担心的；关注的 be concerned about/for关心；担忧；挂念

be concerned with牵涉到……，与……有关 as/so far as...be concerned关于；至于；就……而言 4．power n．能力；力量；权力 The power was cut off and the street was entirely in darkness.断电后街道完全陷入了黑暗。 She was the one who had the power to hire or fire people.有权雇用或解雇人的是她。[快速闪记] (1)come to power上台，当权，表示动作，不能和一段时间连用。 (2)be in power当权，执政，表示状态，可以和一段时间连用。 (3)have the power to do sth 具有做某事的能力、权力 beyond/out of one's power某人力所不能及 5．settle vi.安家；定居；停留vt.使定居；安排；解决 They calmed down and settled their problem soon. 他们镇静下来并很快把问题解决了。 Mr.Wang settled down in America soon after he got there.王先生到美国后不久就定居下来了。 [快速闪记] (1)settle down舒适地坐下；安静下来；定居下来 settle down to sth/doing sth开始认真对待某事；定下心来做某事 (2)settlement n．解决；协议 6．suffer vt.& vi.遭受；忍受；经历 We'll suffer hunger one day if we don't care about the farmland.如果我们不关注农田，将来我们会挨饿的。 [快速闪记] suffering n．痛苦；苦难sufferer n．患病者；受难者 7．pack vi.& vt.捆扎；包装；打行李n．小包；包裹 As soon as I graduated，I packed my bags and moved to the west of China.一毕业我就收拾行李去了中国西部。 A pack of reporters were waiting outside for the latest news.一群记者在外面等待最

2018届高考物理二轮复习转动切割磁感线问题专题卷

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2.如图所示为一圆环发电装置，用电阻R ＝4 Ω的导体棒弯成半径L ＝0.2 m 的闭合圆环，圆心为O ，COD 是一条直径，在O 、D 间接有负载电阻R 1＝1 Ω。整个圆环中均有B ＝0.5 T 的匀强磁场垂直环面穿过。电阻 r ＝1 Ω的导体棒OA 贴着圆环做匀速运动，角速度ω＝300 rad/s ，则( ) A.当OA 到达OC 处时，圆环的电功率为1 W B.当OA 到达OC 处时，圆环的电功率为2 W C.全电路最大功率为3 W D.全电路最大功率为4.5 W 【参考答案】AD 3.如图所示，半径为r 的金属圆盘在垂直于盘面的匀强磁场B 中，绕O 轴以角速度ω沿逆时针方向匀速转动，则通过电阻R 的电流的方向和大小是(金属圆盘的电阻不计)( ) A.由c 到d ，I ＝Br 2ωR B.由d 到c ，I ＝Br 2ωR

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高考真题题组训练(八) Ⅰ.阅读理解(2016全国Ⅱ,B) Five years ago,when I taught art at a school in Seattle,I used Tinkertoys as a test at the beginning of a term to find out something about my students.I put a small set of Tinkertoys in front of each student,and said:“Make something out of the Tinkertoys.You have 45 minutes today-and 45 minutes each day for the rest of the week.” A few students hesitated to start.They waited to see what the rest of the class would do.Several others checked the instructions and made something according to one of the model plans provided.Another group built something out of their own imaginations. Once I had a boy who worked experimentally with Tinkertoys in his free time.His constructions filled a shelf in the art classroom and a good part of his bedroom at home.I was delighted at the presence of such a student.Here was an exceptionally creative mind at work.His presence meant that I had an unexpected teaching assistant in class whose creativity would infect(感染) other students. Encouraging this kind of thinking has a downside.I ran the risk of losing those students who had a different style of thinking.Without fail one would declare,“But I’m just not creative.” “Do you dream at night when you’re asleep?” “Oh,sure.” “So tell me one of your most interesting dreams.”The student would tell something wildly imaginative.Flying in the sky or in a time machine or growing three heads.“That’s pretty creative.Who does that for you?” “Nobody.I do it.” “Really-at night,when you’re asleep?” “Sure.” “Try doing it in the daytime,in class,okay?” 1.The teacher used Tinkertoys in class in order to .

2018年高考语文大一轮复习(限时训练)：专题十二 文学类文本阅读 (二)散文阅读 学案6 Word版含答案

限时训练 一、阅读下面的文字，完成1～3题。(14分) 把往事调成花色 王健 很多日子是随阳光一起开放的，很多心情也是随花朵一起明媚的。 闲暇的时候，我总喜欢一个人背着相机来往于城市和乡村之间。在一个乡村古老的街道上，我看到了一堵石墙上花开烂漫，眼前一亮，我知道那将会是一个写满故事的小院。 主人是一个戴着眼镜的老者，正用放大镜认真地看着报纸，他坐在门口，A身体有些蜷曲，像棵老藤。很难相信，在这样的村庄里会有这么一个学者一样的老人。他的文雅、淡然，安静和自若的神态，让我感觉他和这些花、这个小院就是一个密不可分的整体。 耳聋，面善，和蔼可亲，很善谈，他生活在自己沉静的世界里，却出现在我的视野中。通过那些花，我知道了他是个95岁高龄的老人，以前做过教师。难怪他身上有股与众不同的味道呢！ 他告诉我，墙头上这些艳丽的花是凌霄，已经有几十年的历史了，去年有人想花1 000元买走，他没舍得。他继而又补充道，如果多点儿我就卖掉它，卖些钱好给老伴治病。 数落起这些花就好像数落着自己的子女。这些是兰，这些是莲，这是栀子，这是何首乌……我突然就想起鲁迅先生笔下的百草园，诗情画意里有一段美丽的故事。 然后他便开始数落那些子女，仿佛在数落着自己院里的那些花草。 我很想从这个高寿的老人口中知道幸福的定义。我问幸福是什么，他听不清：什么？ 后来他告诉我幸福是“什么”。

我没懂，他笑：什么都是幸福。小时候想上学堂，以为那就是幸福，后来就去了。后来想当教员，以为那就是幸福，后来真就当了教员。退休了，想安养晚年就是幸福，于是有了这满院花香相伴。现在有人能欣赏我的这些花，我也很幸福。 那么你幸福吗？他回答，我满足于我人生的任何一件事情，无论成败得失。就像我养的这些花，花开花谢，它们不会长开不败，却能在最美的时候开放…… 终于明白一个无私、无欲的老人的幸福观。能够像他院中的花一样，顺从自然、与世无争、坦然处世，就是一种美丽和幸福。 他，何尝不是开在这尘世间的一朵浮莲，B甚至是一棵开满花朵的老藤？ 他把我当作客人，我把这里当作我内心的家园，仿佛一杯茶汁泼出的茶园，至今梦里尚带几分茉莉香。而且他的花香弥漫的脸，是媚人的，沧桑中写着“生活”两个字。如果你仔细地去读，会读出更多的内容。 赏过凌霄，闻过芝香，也饮过菊花，愿意在这远离世俗的地方喝醉。感觉阳光、童年、往事和爱，还闪亮在老屋的深处，只是感觉偶尔等一个人，是偶然的缘分。在多年后，10年或者20年时给它浇水，叶年年青翠，花年年明艳，而眼睛却暗了…… 人生莫过于此：头发掉了，牙齿没了，眼睛花了，耳朵聋了，内心却十分明亮。如今，往事皆调成这满院的花色，花开了，年年更新，心就是不老的，还有爱和希望，快乐和幸福。 我突然看到那暗淡的老屋里，窗台上竟然摆放着一瓶栀子花！一个年迈老人对生活之爱，远远浓于这满院的花香，我要告诉你那是心香呵！是生命之香！ 我独自走在乡间，一位蜷曲的老人，一座破旧的老屋，一些美丽的花，美好的事物走在我的前面，我记得那老人的话：“我要把我的那些花安放在冬天的前面……”

2018届高考物理二轮复习热点2滑块—木板模型学案

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A ．F >μ(2m ＋M )g B ．F >μ(m ＋2M )g C ．F >2μmg D ．F >2μ(m ＋M )g [解析] 要使A 能从B 、C 间抽出来，则A 要相对于B 、C 都滑动，所以A 、C 间与A 、B 间都是滑动摩擦力，对A 有a A ＝F －μmg －μM ＋m g M ，对C 有a C ＝μmg m ，B 受到A 对B 的水平向右的滑动摩擦力μ(M ＋m )g 和地面对B 的摩擦力f ，由于f ≤μ(2M ＋m )g ，所以A 刚要从B 、C 间抽出时，B 静止不动，即a A >a C 时，A 能从B 、C 间抽出，得F >2μ(M ＋m )g ，D 对． [答案] D 3．(2017·广州模拟)如图所示，光滑水平面上放置质量分别为m 、2m 和3m 的三个木块，其中质量为2m 和3m 的木块间用一根不可伸长的轻绳相连，轻绳能承受的最大拉力为F 0；质 量为m 和2m 的木块间的最大静摩擦力为12 F 0.现用水平拉力F 拉质量为3m 的木块，使三个木块一起加速运动，下列说法正确的是( ) A ．质量为2m 的木块受到四个力的作用 B ．当F 逐渐增大到F 0时，轻绳刚好被拉断 C ．在轻绳未被拉断前，当F 逐渐增大时，轻绳上的拉力也随之增大，并且大小总等于F 大小的一半 D ．在轻绳被拉断之前，质量为m 和2m 的木块间已经发生相对滑动 [解析] 质量为2m 的木块受到5个力的作用，重力、拉力、压力、支持力和摩擦力，则选项A 错误；对三者整体，应用牛顿第二定律有F ＝6ma ，对质量为m 和2m 的木块整体，同理有，轻绳拉力T ＝3ma ＝F 2，隔离质量为m 的木块，有f ＝ma ＝F 6 ，可知在轻绳未被拉断前，当F 逐渐增大时，轻绳上的拉力也随之增大，并且大小总等于F 大小的一半，则选项C 正确；当F 逐渐增大到F 0时，轻绳拉力T ＝F 0 2，轻绳没有达到最大拉力不会被拉断，则选项B 错误；

2018年高考语文大一轮复习(限时训练)：专题六选用、仿用、变换句式(含修辞)含答案

限时训练 题组一仿用句式 1．命题(话题)式仿写]依照下面的示例，根据语境，仍以“年”为话题，另写两句话，要求句式与示例相同。(6分) 小时候，年是一碗香气四溢的猪肉，是一件崭新漂亮的衣裳，是一挂噼啪震响的鞭炮；长大后，________________，____________，________________；年老了，________________________，________________，__________________。 答案：年是一张分量沉重的车票是一杯味道醇厚的美酒是一份孝老爱幼的责任年是一缕悠远绵长的回忆是一种翘首以盼的渴望是一场儿孙绕膝的欢聚 2．命题(话题)式仿写]在文学家的笔下，常见的事物也能显现出它们独特的魅力，使读者回味无穷。请仿照例句，从“白云”“瀑布”中任选一个，用富有文采的语言描述，至少运用两种修辞手法。(4分) 小草：雨过天晴，小草犹如刚受了委屈而又活泼可爱的顽童，倔强地昂起头，擦干眼泪，向着太阳微笑。 答：____________________________________________________ _______________________________________________________ 答案：(示例一)白云：白云在天空顽皮地嬉戏着，有时像白蝴蝶翩翩起舞，有时像小白兔向前奔跑，有时像魔术师迅速变了脸孔。 3．自由(开放)式仿写]仿照下面的示例，自选话题，另写三个句子，要求修辞手法、句式与示例相同。(6分) 小草伸出稚嫩的纤手，向你描绘原野的新绿； 树叶掬起温润的阳光，向你展示森林的生机； 溪流吟唱欢快的歌曲，向你诉说春天的故事。

(江苏专用)2019版高考物理大一轮复习 第12单元 原子物理作业手册

第12单元原子物理 课时作业(三十) 第30讲波粒二象性氢原子能级结构 时间 / 40分钟 基础巩固 1.[2017·湖南岳阳二模]关于原子物理问题,下列说法中正确的是() A.一群处于n=3激发态的氢原子向较低能级跃迁,最多可放出两种不同频率的光子 B.由于每种原子都有自己的特征谱线,故可以根据原子光谱来鉴别物质 C.实际上,原子中的电子没有确定的轨道,在空间各处出现的概率是一定的 D.α粒子散射实验揭示了原子的可能能量状态是不连续的 2.(多选)对光的认识,下列说法正确的是() A.个别光子的行为表现出粒子性 B.大量光子的行为表现出粒子性 C.光的波动性是光子本身的一种属性,不是光子之间的相互作用引起的 D.光表现出波动性时,就不具有粒子性了,光表现出粒子性时,就不再具有波动性了 3.[2017·安徽黄山模拟]在“光电效应”实验中,用某一单色光照到某金属表面时,没有光电子从金属表面逸出,下列说法中正确的是() 图K30-1 A.增大照射光的频率,就一定发生光电效应 B.增大照射光的强度,就一定发生光电效应 C.延长照射光照射时间,就一定发生光电效应 D.若照射光的频率大于该金属材料的极限频率,则能发生光电效应 4.(多选)[2017·成都二诊]光伏发电是利用光电效应原理来工作的.目前,人类提高光伏发电效率的途径主要有两个方面:一是改变光源体发光谱带的频率,从而改变产生光电效应的光谱宽度;二是改变被照射金属材料的成分,从而改变其逸出功.下列提高光伏发电效率的途径正确的是() A.减小光源体发光谱带的频率 B.增大光源体发光谱带的频率 C.增大金属材料的逸出功 D.减小金属材料的逸出功 5.氢光谱在可见光的区域内有4条谱线,按照在真空中波长由长到短的顺序,这4条谱线分别是Hα、 Hβ、Hγ和Hδ,它们都是氢原子的电子从量子数大于2的可能轨道上跃迁到量子数为2的轨道时所发出的光.下列判断错误的是() A.电子处于激发态时,Hα所对应的轨道量子数大 B.Hγ的光子能量大于Hβ的光子能量 C.对于同一种玻璃,4种光的折射率以Hα为最小 D.对同一种金属,若Hα能使它发生光电效应,则Hβ、Hγ、Hδ都可以使它发生光电效应 6.(多选)[2017·太原模拟] 20世纪初,爱因斯坦提出光子理论,使得光电效应现象得以完美解释.玻尔的氢原子模型也是在光子概念的启发下提出的.关于光电效应和氢原子模型,下列说法正确的是() A.光电效应实验中,照射光足够强就可以有光电流 B.若某金属的逸出功为W0,则该金属的截止频率为 C.保持照射光强度不变,增大照射光频率,在单位时间内逸出的光电子数将减少 D.氢原子由低能级向高能级跃迁时,吸收光子的能量可以稍大于两能级间能量差

2018高考英语大一轮复习高考真题题组训练(四)外研版

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教材梳理册子必修一 烛之武退秦师 一、文言实词 1.多义实词 (1)鄙 (2)许 (3)说 (4)辞 (5)微 答案:(1)把……当作边邑/边远的地方/浅陋,见识少,眼光短/自谦之词;(2)答应/表处所,地方/赞同/表约数;(3)通“悦”,高兴/陈说/杂说,一种文体;(4)推辞/告别/推脱;(5)没有,用来表示一种否定的假设或条件/暗暗地/稍微,略微/低贱,卑下。 2.通假字 (1)无能为也已．( ) (2)行李之往来,共．其乏困( ) (3)秦伯说．( ) (4)失其所与,不知．( ) 答案:(1)“已”同“矣”,了;(2)“共”通“供”,供给; (3)“说”通“悦”,高兴;(4)“知”通“智”,明智。

3.古今异义词 (1)若舍郑以为东道主 ．．． 今义:请客的主人 古义: (2)行李 ．．之往来 今义:出门所带的包裹、箱子等 古义: (3)共其乏困 ．． 今义:疲劳 古义: (4)微夫人 ．．之力不及此 今义:妻子 古义: 答案:(1)东方道路上(招待过客)的主人;(2)出使的人;(3)缺少(的东西);(4)那人,指秦穆公。 4.词类活用 (1)晋军．函陵,秦军氾南( ) (2)越国以鄙．远( ) (3)既东封 ．．郑( ) (4)与郑人盟．( ) (5)越国以鄙远．( ) 答案:(1)名词作动词,驻军;(2)名词意动用法,把……当作边邑;(3)名词作状语,在东边;名词使动用法,使……成为疆界;(4)名词作动词,结盟;(5)形容词作名词,边远的地方。 二、文言虚词 1.以 2.而

3.焉 4.其 5.之 答案:1.连词,因为;介词,拿,用;连词,表顺承;连词,表顺承;介词,把。2.连词,才,表顺承;表修饰,连词;表顺承,连词。3.啊,句末语气词,表感叹;疑问代词,为什么;疑问代词,哪里;兼词,于之。4.代词,指代“使者”;代词,指代“那件事”;代词,自己的;语气词,还是,表商量。5.代词,他们,指秦军;结构助词,的;主谓间助词,取消句子独立性,不译;宾语前置的标志,不译。 三、文言特殊句式 1.夫晋,何厌之有( ) 2.以其无礼于晋( ) 3.晋军函陵( ) 答案:1.宾语前置句;2.状语后置句;3.省略句。 四、文言句子翻译 1.是寡人之过也。 译文: 2.越国以鄙远,君知其难也。 译文: 3.焉用亡郑以陪邻? 译文: 4.邻之厚,君之薄也。 译文: 5.若舍郑以为东道主,行李之往来,共其乏困,君亦无所害。

2019届高考物理大一轮复习金考卷：电磁感应(含解析)

阶段示范性金考卷(九) (教师用书独具) 本卷测试内容：电磁感应 本试卷分为第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分，共110分． 第Ⅰ卷(选择题，共60分) 一、选择题(本题共12小题，每小题5分，共60分．在第1、2、4、5、7、8小题给出的4个选项中，只有一个选项正确；在第3、6、9、10、11、12小题给出的四个选项中，有多个选项正确，全部选对的得5分，选对但不全的得3分，有选错的得0分．) 1. [2018·济南高三模拟]如图所示，一轻质横杆两侧各固定一金属环，横杆可绕中心点自由转动，拿一条形磁铁插向其中一个小环，后又取出插向另一个小环，发生的现象是( ) A. 磁铁插向左环，横杆发生转动 B. 磁铁插向右环，横杆发生转动 C. 无论磁铁插向左环还是右环，横杆都不发生转动 D. 无论磁铁插向左环还是右环，横杆都发生转动 解析：本题考查电磁感应现象、安培力的简单应用．磁铁插向左环，横杆不发生移动，因为左环不闭合，不能产生感应电流，不受安培力的作用；磁铁插向右环，横杆发生移动，因为右环闭合，能产生感应电流，在磁场中受到安培力的作用，选项B正确．本题难度易． 答案：B 2. 如图所示，在某中学实验室的水平桌面上，放置一正方形闭合导体线圈abcd，线圈的ab边沿南北方向，ad边沿东西方向，已知该处地磁场的竖直分量向下．下列说法中正确的是( ) A. 若使线圈向东平动，则b点的电势比a点的电势低 B. 若使线圈向北平动，则a点的电势比d点的电势低 C. 若以ab为轴将线圈向上翻转，则线圈中感应电流方向为abcda D. 若以ab为轴将线圈向上翻转，则线圈中感应电流方向为adcba 解析：由右手定则知，若使线圈向东平动，线圈的ab边和cd边切割磁感线，c(b)点电势高于d(a)点电势，故A错误；同理知B错误；若以ab为轴将线圈向上翻转，穿过线圈平面的磁通量将变小，由楞次定律可判定线圈中感应电流方向为abcda，C正确．

2018届高考物理二轮复习力与天体运动专题卷(全国通用)

专题1 第4讲 1．(2017·全国卷Ⅲ)2017年4月，我国成功发射的天舟一号货运飞船与天宫二号空间实验室完成了首次交会对接，对接形成的组合体仍沿天宫二号原来的轨道(可视为圆轨道)运行．与天宫二号单独运行时相比，组合体运行的( C ) A ．周期变大 B ．速率变大 C ．动能变大 D ．向心加速度变大 解析 组合体比天宫二号质量大，轨道半径R 不变，根据GMm R 2＝m v 2R ，可得v ＝GM R ，可知与天宫二号单独运行时相比，组合体运行的速率不变，B 项错误；又T ＝2πR v ，则周期 T 不变，A 项错误；质量变大、速率不变，动能变大，C 项正确；向心加速度a ＝GM R 2，不变，D 项错误． 2．(2017·全国卷Ⅱ)(多选)如图，海王星绕太阳沿椭圆轨道运动，P 为近日点，Q 为远日点，M 、N 为轨道短轴的两个端点，运行的周期为T 0.若只考虑海王星和太阳之间的相互作用．则海王星在从P 经M 、Q 到N 的运动过程中( CD ) A ．从P 到M 所用的时间等于T 04 B ．从Q 到N 阶段，机械能逐渐变大 C ．从P 到Q 阶段，速率逐渐变小 D ．从M 到N 阶段，万有引力对它先做负功后做正功 解析 在海王星从P 到Q 的运动过程中，由于引力与速度的夹角大于90°，因此引力做负功，根据动能定理可知，速度越来越小，C 项正确；海王星从P 到M 的时间小于从M 到 Q 的时间，因此从P 到M 的时间小于T 04 ，A 项错误；由于海王星运动过程中只受到太阳引力作用，引力做功不改变海王星的机械能，即从Q 到N 的运动过程中海王星的机械能守恒，B 项错误；从M 到Q 的运动过程中引力与速度的夹角大于90°，因此引力做负功，从Q 到N 的过程中，引力与速度的夹角小于90°，因此引力做正功，即海王星从M 到N 的过程中万有引力先做负功后做正功，D 项正确．

2019年高考英语新精准大一轮语法专项突破 (6)

[即时演练] A 阅读下面短文，根据其内容写一篇60词左右的内容概要。 These days our society develops rapidly and forces people to rush. It appears that people have got used to being in a hurry. However, it’s better for people to take their time and live their life at a slower pace than to hurry to get things done. The main reason that convinces us to oppose doing work in a hurry is the possibility of doing wrongs in a rush. When people do their jobs or take action in a hurry, they can’t make a sound decision and probably regret later. As the saying goes，“Haste makes waste.”We should think carefully before making a decision and do our work less quickly. We should not make mistakes by doing work hurriedly. Slowing down the pace of life helps people enjoy their life better. For example, taking a train to some place certainly will take more time than taking a plane. However, taking a train makes people have enough time to get to know a lot of new friends. Besides, it allows people to fully enjoy the beautiful scenery along the way. On the contrary, being in a hurry will make us lose chances of enjoying our lives. Finally, slower life pace provides better health conditions for us. As is known to all, taking action in a hurry bothers people and raises their stress. People think if they are not in a hurry, they will become a loser and that annoys them. But being in a hurry can hurt people both physically and mentally. According to some studies, people who have a slower pace suffer fewer diseases, tend to be happier and live much longer than those whose life is tense, even if the former finish jobs more slowly than the latter. In short, working quickly will bring about more material benefits to make our society more advanced. Yet, much stress can’t bring enjoyment, friends and health, which are much more important than money and other material advantages. Therefore, take your time and live your life at a slower pace. ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ One possible version： To live life at a slower pace is better than to live life in a hurry. There are three reasons for this.Firstly, doing things in a hurry will raise the possibility of making mistakes.Secondly, being in a hurry will not give people enough time to enjoy their life.Thirdly, doing things in a hurry raises people’s pressure and therefore is bad for their health.In brief, it is better for people to live life at a slower pace than to live life in a hurry. B

2018届高考物理二轮复习变质量计算问题专题卷

100考点最新模拟题千题精练14- 6 1．(10分)用传统的打气筒给自行车打气时，不好判断是否已经打足了气．某研究性学习小组的同学经过思考，解决了这一问题．他们在传统打气筒基础上进行了如下的改装(示意图如图甲所示)：圆柱形打气筒高H ，内部横截面积为S ，底部有一单向阀门K ，厚度不计的活塞上提时外界大气可从活塞四周进入，活塞下压时可将打气筒内气体推入容器B 中，B 的容积V B ＝3HS ，向B 中打气前A 、B 中气体初始压强均为p 0，该组同学设想在打气筒内壁焊接一 卡环C (体积不计)，C 距气筒顶部高度为h ＝23 H ，这样就可以自动控制容器B 中的最终压强．求： ①假设气体温度不变，第一次将活塞从打气筒口压到C 处时，容器B 内的压强； ②要使容器B 内压强不超过5p 0，h 与H 之比应为多大． 2．(2016·陕西五校一模)如图所示是农业上常用的农药喷雾器，贮液筒与打气筒用细连接管相连，已知贮液筒容积为8 L(不计贮液筒两端连接管体积)，打气筒活塞每循环工作一次，能向贮液筒内压入1 atm 的空气200 mL ，现打开喷雾头开关K ，装入6 L 的药液后再关闭，设周围大气压恒为1 atm ，打气过程中贮液筒内气体温度与外界温度相同且保持不变。求：

(1)要使贮液筒内药液上方的气体压强达到3 atm，打气筒活塞需要循环工作的次数； (2)打开喷雾头开关K直至贮液筒内、外气压相同时，贮液筒向外喷出药液的体积。【参考答案】(1)20次(2)4 L 由理想气体方程得：p1V1＝p2V2 解得：V＝4 L 打气次数：n＝V 0.2 L ＝20 (2)打开喷雾头开关K直至贮液筒内外气压相同时，p3＝1 atm 由理想气体方程得：p1V1＝p3V3 解得：V3＝V1＝6 L 故喷出药液的体积V′＝V3－V0＝4 L 3.(2016·山西省高三质检) (2)型号是LWH159－10.0－15的医用氧气瓶，容积是10 L，内装有1.80 kg的氧气。使用前，瓶内氧气压强为1.4×107 Pa，温度为37 ℃。当用这个氧气瓶给患者输氧后，发现瓶内氧气压强变为7.0×106 Pa，温度降为27 ℃，试求患者消耗的氧气的质量。