双基限时练3

双基限时练(三)Unit 1Part ⅢⅠ.单词拼写

1．________(少年) in some schools are driven to work hard at their lessons.

答案Teenagers

2．That's ________ (确切地) what I wanted.

答案exactly

3．We are ________ (感激的) for your help.

答案grateful

4．In the past, we used to ________ (交换) letters.

答案swap

5．I heard an ________ (条) of news over the radio.

答案item

Ⅱ.翻译句子

1．在老师的帮助下，她的法语学得很好。(get along)

_______________________________________________________ 答案With the help of the teacher, her French gets along well.

2．请和我们一起打篮球吧。(join)

_______________________________________________________ 答案Please join us in playing basketball.

3．我遵从了他的建议。(follow)

_______________________________________________________ 答案I followed his advice.

4．我不擅长与人交流。(communicate)

_______________________________________________________

答案I'm not good at communicating with others.

5．他正患重感冒。(suffer from)

_______________________________________________________ 答案He's suffering from a bad cold.

6．他俩一见钟情。(fall in love)

_______________________________________________________ 答案At first sight, they fell in love (with each other)．

Ⅲ.单项填空

1．—Would you like to ________ my birthday party this Saturday?

— Sorry, I have an important meeting to ________.

A. attend; join

B. join; attend

C. join; take part in

D. join in; attend

答案与解析D“参加活动”用join in或take part in，“开会”用attend。

2．—I don't know ________ you are getting along with your classmates.

— I have told you many times ________ I'm getting on well with them.

A. how; that

B. that; how

C. how; how

D. that; that

答案与解析A第一句提问“相处得如何”用how，第二句回答是陈述，用that。

3．The old lady is very grateful ________ the Party's consideration.

A. to

B. for

C. on

D. at

答案与解析B be grateful to“很感激……”，后接人、组织等。be grateful for“因……而感激”；be grateful at“对……高兴”。

4．— Shall we put off the work till next week?

— ________. I don't think it would be the right thing to do.

A. Never mind

B. Sure, go ahead

C. Yes, better not

D. No, I disagree

答案与解析D由答语看出，说话者不同意对方的意见，只有D项符合句意。

5．— The next train will arrive in the afternoon.

— Oh, could you be more specific?

— Yeah, at 4：35 p．m. ________.

A. specially

B. particularly

C. properly

D. exactly

答案与解析D根据上文的specific“具体的”判断选D项。

6．They dislike this kind of life, ________？

A. do they

B. don't they

C. will they

D. won't they

答案与解析B因为dislike不是否定词，所以反意疑问句部分用否定式。

7．—Do you know how long ________ Mary before they got married?

— For about five years.

A. had he been in love with

B. had he fallen in love with

C. he had been in love with

D. he had fallen in love with

答案与解析C问句作宾语用陈述语序，fall in love with可以

用完成时，但不可以与“for＋时间段”短语连用，故选C项。

8．Readers can ________ quite well without knowing the exact meaning of each word.

A. get over

B. get in

C. get along

D. get through

答案与解析C句意：不知道每个词的确切意思，读者也能理解得很好(进展顺利)。四个选项中只有get along“进行，进展”，符合句意。

9．English can help people ________ and make them stay in a foreign country easily and comfortably.

A. agree with

B. communicate

C. communicate to

D. write to

答案与解析B句意：英语能够帮助人们交流，并使他们在国外过得轻松舒服。A、D两项不合句意，communicate此处单独使用，意为“交流；沟通；取得联系”。其名词形式为communication“通讯；联络”。

10．He has some trouble ________ his classmates, but he has no trouble ________ doing his lessons.

A. with; with

B. in; in

C. with; in

D. in; with

答案与解析C have trouble with sb./sth.“在……方面有困难”，后加名词或代词；have trouble in doing sth.“做……有困难”，后常加动名词，in有时可省略。

Ⅳ.阅读理解

Robert had just moved into the street and he felt strange that he was not wanted. He knew that perhaps the other boys were trying to get an idea of what kind of a boy he was. This_did_not_help_to_make_him_less_lonely. He was new and he had to be tested. Still, proving (证明) himself would not be all that easy. He did not want to run with bad boys or get into something against the law to prove that he was strong. No! He must show what he was made of in a more helpful way. That was when he got the idea. The next day was Saturday. He knew that most of the boys would be down on the playground and choose up sides for the Saturday game. Robert knew he could play well and what just might be enough to prove he was strong — and to make friends with them.

He arrived early and did his step exercises. He shot the ball several times and did some other exercises — the most difficult and most wonderful in basketball. Then the boys came. Robert went through what he had done before the game and showed what he could.

No one said a word. The boys just looked at each other, and thought about it. In the end, when it was all over, the biggest of the group just smiled and shook his head. Robert knew he had made it.

1. What does the underlined sentence mean?

A. Robert felt more lonely because the other boys wanted to test

him.

B. Robert did not want himself to be less lonely.

C. Robert felt as lonely as before when the other boys tried to find out what kind of a boy he was.

D. The other boys did not want to make Robert feel less lonely.

答案与解析C根据后句“He was new and he had to be tested.”可知他还没有朋友。

2. Why would it not be easy for Robert to prove himself?

A. Because he was not sure if he was really strong.

B. Because he was new and was not wanted in the street.

C. Because the other boys had found out what kind of a boy he was.

D. Because he must choose the best one among different ways.

答案与解析D从文章第一段中“He did not want to run with bad boys ...”及第一段后半部分可以判断出答案。

3. When did Robert decide to prove himself by playing basketball?

A. After he had thought about the two wrong ways.

B. Long before he moved into the street.

C. When the other boys came down to the playground.

D. As soon as he showed what he was made of in front of the other boys.

答案与解析A此处two wrong ways指“run with bad boys or get into something against the law”。

4. What did the biggest of the group mean by shaking his head?

A. He did not want to say anything about what Robert had done.

B. He had not thought Robert could play so wonderfully.

C. He did want to make friends with Robert.

D. He did not think Robert played basketball well.

答案与解析B由文章最后一句“Robert知道他成功了。”可得到答案。

5. The best title of the story should be________.

A. Three Ways to Prove Oneself

B. Robert Is Lonely

C. Just One of the Boys

D. A Saturday Basketball Game

答案与解析C A项中three ways与文章不符。B项的内容只是故事的开始，而后来Robert通过努力成功地和其他的孩子交朋友了。本文也没有具体提到比赛。

Ⅴ.阅读表达

阅读下面的短文，并根据短文后的要求答题(请注意问题后的字数要求)。

4 Ways to Fight Depression

If you feel depressed, it's best to do something about it —depression doesn't just go away on its own. In addition to getting help from a doctor or an expert, here are 4 things you can do to feel better.

1. Exercise. Take a 15－to 30－minute walk every day－or dance, jog, or bike if you like. In addition to getting these exercises, some yoga poses can help relieve feelings of depression. Try downward－facing dog or legs－up－the－wall pose (you can find these poses on yoga websites). Two other aspects of yoga — breathing exercises and meditation (冥想) — can also help people with depression feel better.

2. Mind your food. ________ can affect appetite. One person may not feel like eating at all, but another might overeat. Proper food can influence a person's mood and energy. So eat plenty of fruits and

vegetables and get regular meals (even if you don't feel hungry, try to eat something light, like a piece of fruit, to keep you going).

3. Identify troubles. Try to identify any situations that have made you depressed. Once you find out the causes, turn your attention to something positive. Take action to solve problems. Ask for help if you need it. Feeling connected to friends and family can help relieve depression. (It may also help them feel there's something they can do instead of just watching you hurt. )

4. Look on the bright side. Depression affects a person's thoughts, making everything seem unhappy and hopeless. If depression has you noticing only the negative, make an effort to notice the good things in life.

Most of all, don't forget to be patient with yourself. Depression takes time to heal.

1．What is the main idea of this passage? (no more than 5 words) _______________________________________________________ 答案 4 Ways to Fight Depression

2．List two aspects of yoga that can help depressed people feel better. (no more than 4 words)

①_____________________________________________________

②_____________________________________________________

答案Yoga poses; Breathing exercises; Meditation (任选两项) 3．Fill in the blank in Paragraph 3. (no more than 2 words)

_______________________________________________________ 答案Depression/Feeling depressed

4．What does the underlined “It” in Paragraph 4 refer to? (no more than 6 words)

_______________________________________________________ 答案Feeling connected to friends and family.

5．If you feel depressed, everything around you may seem ________. (no more than 3 words)

_______________________________________________________ 答案unhappy and hopeless

人教新课标版语文高一人教版必修三双基限时练 12动物游戏之谜

双基限时练(十二)动物游戏之谜 一、基础测试 1．下列词语中，加点字的注音完全正确的一项是() A．缅．甸(miàn)聒．噪(ɡuō) 潜．游(qián) 嬉．闹(xī) B．脊．背(jǐ) 挨．挤(ái) 倒．立(dào) 消耗．(hào) C．汲．取(jí) 安抚．(fǔ) 尾鳍．(qí) 格．斗(ɡé) D．反馈．(kuì) 模．式(mó) 捉．摸(zuó) 嚼．烂(jiáo) 解析A．缅miǎn；B.挨āi；D.捉zhuō。 答案 C 2．下列词语中，没有错别字的一项是() A．伙伴兴高彩烈平衡史无前例 B．默契得意扬扬厮打销声匿迹 C．跳越猩猩相惜消融铁打金刚 D．元气自娱自乐调剂杂草老藤 解析A．兴高彩．烈—采；B.得意扬扬 ．．—洋洋；C.跳越．—跃，猩猩 ．．相惜—惺惺。 答案 D 3．下列加点的成语使用不正确的一项是() A．在动物身上，无论从形态结构、生理过程，还是行为方面去分析，尽可能节省能量 的例子几乎俯拾皆是 ．．．．。 B．单独游戏时，动物常常兴高采烈 ．．．．地独自奔跑、跳跃，在原地打圈子。 C．每当刮起大风时，成群的露脊鲸把尾鳍高高举出水面，正对着大风，以便像船帆似 的，让大风推着它们，得意洋洋 ．．．．地“驶”向海岸。 D．研究者们各执己见，众说纷纭 ．．．．。 解析A项中应是“比比皆是”。“比比皆是”和“俯拾皆是”都表示相同的事物很多，到处都是。前者侧重表示多得很，到处都是；后者侧重表示容易得到。 答案 A 4．下列各句没有语病的一句是() A．动物的游戏行为，是动物行为研究中被认为最复杂、最难以捉摸、引起争论最多的

行为。 B．在动物身上，无论从形态结构、生理过程和行为方面去分析，尽可能节省能量的例子比比皆是。 C．地震发生后，当地政府及解放军部队全力救助，目前灾区群众已住进了临时帐篷，防止余震再次发生。 D．有人认为科学家终日埋头科研，不问家事，有点不近人情，然而事实却是对这种偏见的最好说明。 解析B项中应将“和”改为“还是”；C项不合逻辑，应为“预防余震发生”；D项中“事实是说明”正好说反了，依句意应是“事实正是对上述说法的反驳”。 答案 A 5．下列句子中标点符号的使用，不正确的一项是() A．马驹常常欢快地连续扬起前蹄，轻盈地蹦跳；猴类喜欢在地上翻滚，拉着树枝荡秋千……单独游戏时动物显得自由自在。 B．这些科学家认为，动物游戏是为了“自我娱乐”，而自我娱乐是动物天性的表现，正像捕食、逃避敌害，繁殖行为等是动物的天性一样。 C．这几种假说，哪一种更有道理？动物的游戏，究竟是为了“演习”，为了“自娱”，为了“学习”，还是为了“锻炼”？研究者们各执己见，众说纷纭。 D．电视剧《水浒传》标明作者为施耐庵、罗贯中，引起许多观众的疑惑：《水浒传》的作者不是施耐庵吗？怎么又多出个罗贯中？ 解析B项中，第二个“自我娱乐”也应加引号，“逃避敌害”后的逗号应改为顿号，因为三者处在同一等级的并列上。 答案 B 6．下列语句排列正确的一项是() ①否则，我就只能相信，这些曲调是真正的音乐。 ②那些歌也许是有关航行，或有关浮游节肢动物的来源，或有关领地界限的简单而实打实的叙述和声明。 ③当然还有其他方法来解释鲸鱼之歌。 ④除非有一天有人证明，这些长长的、缭绕的、执著的曲调，被不同的歌唱者重复着，又加上了它们各自的修饰，这不过是为了向海面下数百英里之外传递像“鲸鱼在这儿”之类寻常的信息。 ⑤但迄今证据还没有得到。 A．③①②⑤④B．②③①④⑤ C．⑤②③①④D．③②⑤④① 解析注意“否则”“除非”“但”等词。

双基限时练26

双基限时练(二十六) 1．已知下列四个等式： ①sin(α＋β)＝sin αcos β＋cos αsin β； ②cos(α＋β)＝cos αcos β－sin αsin β； ③cos ? ?? ??π2＋α＝－sin α； ④tan(α－β)＝tan α－tan β1＋tan αtan β . 其中恒成立的等式有( ) A ．2个 B ．3个 C ．4个 D ．5个 解析 ①，②，③对任意角α，β恒成立，④中的α，β还要使正 切函数有意义． 答案 B 2.1－tan15°1＋tan15° 的值为( ) A. 3 B.33 C ．1 D ．－ 3 解析 原式＝tan45°－tan15°1＋tan45°tan15° ＝tan(45°－15°)＝tan30°＝33. 答案 B 3．设tan(α＋β)＝25，tan ? ????β－π4＝14，则tan ? ?? ??α＋π4等于( ) A.1328 B.1322 C.322 D.16 3．已知α，β为锐角，cos α＝45，tan(α－β)＝－13，则tan β的值为 ( )

A.13 B.139 C.1315 D.59 答案 B 4．已知tan α＋tan β＝2，tan(α＋β)＝4，则tan αtan β等于( ) A ．2 B ．1 C.12 D ．4 解析 因为tan(α＋β)＝tan α＋tan β 1－tan αtan β＝21－tan αtan β ＝4，所以tan αtan β＝12. 答案 C 5．若0<α<π2，0<β<π2，且tan α＝17，tan β＝34，则α＋β等于( ) A.π6 B.π4 C.π3 D.3π4 解析 由已知可求得tan(α＋β)＝1. 又0<α＋β<π，∴α＋β＝π4. 答案 B 6．已知tan α和tan ? ????π4－α是方程ax 2＋bx ＋c ＝0的两个根，则a ，b ，c 的关系是( ) A ．b ＝a ＋c B ．2b ＝a ＋c C ．c ＝b ＋a D ．c ＝ab 解析 由韦达定理可知tan α＋tan ? ????π4－α＝－b a 且tan αtan ? ?? ??π4－a ＝

高二数学 双基限时练3

双基限时练(三) 1．设f ′(x 0)＝0，则曲线y ＝f (x )在点(x 0，f (x 0))处的切线( ) A ．不存在 B ．与x 轴垂直 C ．与x 轴平行 D ．与x 轴平行或重合 答案 D 2．一木块沿某一斜面自由下滑，测得下滑的水平距离s 与时间t 之间的函数关系为s ＝18t 2，则当t ＝2时，此木块在水平方向的瞬时速 度为( ) A. 2 B. 1 C.12 D .14 解析 s ′＝lim Δt →0 Δs Δt ＝lim Δt →0 18(t ＋Δt )2－18t 2Δt ＝lim Δt →0 14tΔt ＋18(Δt )2Δt ＝lim Δt →0 (14t ＋18Δt )＝14t . ∴当t ＝2时，s ′＝12. 答案 C 3．若曲线y ＝h (x )在点P (a ，h (a ))处切线方程为2x ＋y ＋1＝0，则 ( ) A ．h ′(a )<0 B ．h ′(a )>0 C ．h ′(a )＝0 D ．h ′(a )的符号不定 解析 由2x ＋y ＋1＝0，得h ′(a )＝－2<0. ∴h ′(a )<0. 答案 A

4．曲线y ＝9x 在点(3,3)处的切线方程的倾斜角α等于( ) A ．45° B ．60° C ．135° D ．120° 解析 k ＝y ′＝lim Δx →0 Δy Δx ＝lim Δx →0 9x ＋Δx －9x Δx ＝lim Δx →0 －9x (x ＋Δx )＝－9x 2. ∴当x ＝3时，tan α＝－1.∴α＝135°. 答案 C 5．在曲线y ＝x 2 上切线倾斜角为π4的点是( ) A ．(0,0) B ．(2,4) C ．(14，116) D ．(12，14) 解析 y ′＝lim Δx →0 Δy Δx ＝lim Δx →0 (x ＋Δx )2－x 2Δx ＝lim Δx →0 2xΔx ＋(Δx )2Δx ＝lim Δx →0 (2x ＋Δx )＝2x . 令2x ＝tan π4＝1，∴x ＝12，y ＝14. 故所求的点是(12，14)． 答案 D 6．已知曲线y ＝2x 2上一点A (2,8)，则过点A 的切线的斜率为________． 解析 k ＝f ′(2)＝lim Δx →0 2(2＋Δx )2－2×22Δx

2019-2020年高中数学 双基限时练12 新人教A版必修3

2019-2020年高中数学双基限时练12 新人教A版必修3 1．问题：①有1000个乒乓球分别装在3个箱子内，其中红色箱子内有500个，蓝色箱子内有200个，黄色箱子内有300个，现从中抽取一个容量为100的样本；②从20名学生中选出3名参加座谈会． 方法：Ⅰ.简单随机抽样法Ⅱ.系统抽样法Ⅲ.分层抽样法．其中问题与方法能配对的是( ) A．①Ⅰ，②ⅡB．①Ⅲ，②Ⅰ C．①Ⅱ，②ⅢD．①Ⅲ，②Ⅱ 解析读题知①用分层抽样法，②用简单随机抽样法． 答案 B 2．一个单位有职工160人，其中有业务员104人，管理人员32人，后勤服务人员24人，要从中抽取一个容量为20的样本，用分层抽样方法抽出样本，则在20人的样本中管理人员人数为( ) A．3 B．4 C．12 D．7 解析由题意可得20 160 ×32＝4. 答案 B 3．某地区为了解居民家庭生活状况，先把居民按所在行业分为几类，然后每个行业抽1 100的居民家庭进行调查，这种抽样是( ) A．简单随机抽样B．系统抽样 C．分层抽样D．分类抽样 答案 C 4．一个总体分为A，B两层，其个体数之比为，用分层抽样方法从总体中抽取一个容量为10的样本，则A层中抽取的样本个数为( ) A．8 B．6 C．4 D．2 答案 A 5．某大学数学系共有本科生5000人，其中一、二、三、四年级的学生数之比为4:3:2:1.要用分层抽样的方法从所有本科生中抽取一个容量为200的样本，则应抽三年级的学生( ) A．80人B．40人 C．60人D．20人

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