寒假作业2
八年级英语寒假补充作业(二) 2018 02.05姓名学号___________一、单项选择(20分)( )1. --- The cake is so delicious? Would you like _____? --- No, thanks.A. some moreB. a few moreC. another twoD. any more( )2. The strange animal has no eyes _____ ears.A. andB. orC. and noD. B and C( )3. --- I can see you are feeling sleepy. --- Yes, I feel _____about the _____talk.A. bored,boringB.bored boredC. boring boringD. boring bored( )4. I know _____ of those people in the room, so I left.A. fewB. a fewC. littleD. a little( )5. The teacher told the students _______ at people in trouble.A.not laughB. to laughC. don’t laughD.not to laugh( )6.I will make a phone call to you when I ____________A.get toB.reachC.arrive atD.arrive( ) 7. The story of Friendship is better than _______ of Spacemen on Earth, but the actors in Spacemen onEarth are better than ________ in Friendship.A. one; onesB. that; thoseC. that; thatD. those; that( ) 8. ----Don’t be late for school next time. ----_________________.A. Yes, I willB. Yes, I won’tC. No, I willD. No, I won’t ( ) 9. It is _______ cheaper and _______ enjoyable to travel by train than by plane.A.much; far moreB. very; very muchC. more; much moreD. much more; much( ) 10. ---- The shoes don’t fit me. Would you please show me __________?---- Sure. Here you are.A. the other oneB. the othersC. another pairD. another one( )11. The trip _______ us about four hours by plane.A. spentB. tookC. spendsD. take( )12. Simon’s jeans are the same ____ Daniel’s but different ____ John’s.A. as ; asB. as ; likeC. as ; fromD. like ; as( )13. Shanghai is bigger than_____ in Jiangsu.A. any cityB. any other cityC. other citiesD.the other city( )14. Books are made _____ paper and paper is made ________ wood.A. in , ofB. of , fromC. by , ofD. from , of( ) 15 ---Just stop_______a rest, Sue. You have kept_______ for two hours.--- But the book is really interesting.A.having; readingB. to have; to readC. having; to readD. to have; reading( )16. When did his cousin _______ the World Park?A .getB .arriveC .arrive inD .reach( )17. There are many places of _______ in the park. I am ________ in these places.A.interests, interestingB. interest, interestedC. interest, interestingD. interests, interested( )18.---I am going to Sanya for my holiday tomorrow. ---_____________.A. Have a good timeB. You’re rightC. It’s goodD. Goodbye( )19.-Boys and girls, help _______ to some fruit.A. YourselfB. yourselvesC. themselvesD. himself( )20.English names are different Chinese names.A. toB. fromC. inD. with二、完形填空(10分)David is a middle school student. He had lived in a small 1 for fifteen years. It was a small place with only five families living there. His father, Mr. Hill, was a rich farmer and later on he 2 a shop in our town. He bought a house here last month. His 3 moved to the new house and his son began to study in our class. But he had 4 friends here. At first he often played by 5 .His neighbor Cathy is a kind girl. She has many friends. She finds the boy never talks with anybody and decides to help him. David 6 to stay with her and talks to her a lot. Now they’re good friends.One afternoon, C athy told David, “It’ll be my sixteenth birthday tomorrow. I’ll have a birthday party. Would you like to come?”“7 . I’m glad to,” the boy said happily.David got home and thought of a 8 he could give to Cathy. He was sorry that he 9 to ask the gir l what she liked. He couldn’t telephone her because he didn’t know her 10 . At that moment Mrs. Hill came and asked, “What’s the matter, dear?”“What would you like if it was your sixteenth birthday, Mom?”“Nothing,” the woman said, “I just wish I were sixteen.”( ) 1. A. town B. city C. village D. country( ) 2. A. open B. opens C. opened D. opening( ) 3. A. home B. shop C. building D. family( ) 4. A. a few B. few C. a little D. little( ) 5. A. himself B. him C. his D. he( ) 6. A. enjoy B. enjoys C. like D. likes( ) 7. A. Well B. No C. Sorry D. Certainly( ) 8. A. book B. dress C. present D. pen( ) 9. A. forgot B. forget C. remember D. remembered ( ) 10. A. home B. number C. place D. Address三、阅读理解(30分)AWe are all busy talking about and using the Internet , but how many of us know the history of the Internet?Many people are surprised when they find that the Internet was set up in the 1960s. At that time, computers were large and expensive. Computer networks didn't work well. If one computer in the network broke down, then the whole network stopped. So a new network system had to be set up. It should be good enough to be used by many different computers. If part of the network was not working, information could be sent through another part. In this way computer network system would keep on working all the time.At first the Internet was only used by the government (政府), but in the early 1970s, universities , hospitals and banks were allowed (允许) to use it too. However, computers were still very expensive and the Internet was difficult to use. By the start of the 1990s, computers became cheaper and easier to use. Scientists had also developed software (软件) that made "surfing" (浏览) the Internet more convenient (方便).Today it is easy to get on-line and it is said that millions of people use the Internet every day. Sending e-mail is more and more popular among students.The Internet has now become one of the most important parts of people's life.( )1. The Internet has a history of more than ___ years.A. sixtyB. tenC. thirtyD. twenty( )2. A new network system was set up to ____.A. make computers cheaperB. make itself keep on working all the timeC. break down the whole networkD. make computers large and expensive( )3. At first the Internet was only used by ______.A. the governmentB. universitiesC. hospitals and banksD. schools( )4. ______ made "surfing" the Internet more convenient.A. ComputersB. ScientistsC. SoftwareD. Information( )5. Which of the following is true?A. In the 1960s, computer networks worked well.B. In the early 1970s, the Internet was easy to use.C. Sending e-mail is now more popular among students than before.D. Today it's still not easy to get on-line.(B)A friend of mine named Paul received an expensive car from his brother as a Christmas present．On Christmas Eve when Paul came out of his office，a street urchin(顽童) was walking around the shining car．“Is this your car，Paul？”he asked． Paul answered，“Yes，my brother gave it to me for Christmas．”The boy was surprised．“You mean your brother gave it to you and it didn’t cost you anything？Boy，I wish…”He hesitated(犹豫)．Of course， Paul knew what he was going to wish for．He was going to wish he had a brother like that. But what the boy said surprised Paul greatly.“I wish,” the boy went on，“that I could be a brother like that．”Paul looked at the boy in surprise, then he said again, “Would you like to take a ride in my car？”“Oh yes，I’d love that．”After a short ride，the boy turned and with his eyes shining，said，“Paul，would you mind (介意)driving in front of my house？”Paul smiled a little．He thought he knew what the boy wanted．He wanted to show his neighbours that he could ride home in a big car. But Paul was wrong again. “Will you stop where those two steps are？ the boy asked．He ran up to the steps. Then in a short while Paul heard him coming back, but he was not coming fast. He was carrying his little crippled(残疾的) brother. He sat him down on the step and pointed to the car.“There she is, Buddy, just li ke I told you upstairs. His brother gave it to him for Christmas and it didn’t cost him a cent(美分). And some day I’m going to give you one just like it…then you can see for yourself all the nice things in the Christmas windows that I’ve been trying to tell you about.”Paul got out and lifted the boy to the front seat of his car. The shining-eyed older brother climbed in beside him and the three of them began an unforgettable(难忘的) holiday ride. ( )6.The street urchin was very surprised when ________．A. Paul received an expensive carB. Paul told him about the carC. he saw the shining carD. he was walking around the car( )7．From the story we can see the urchin ________．A.wished to give his brother a carB. wanted Paul’s brother to give him a carC. wished he could have a brother like Paul’sD. wished Paul could be a brother like that( )8．The urchin asked Paul to stop his car in front of his house ________．A .to show his neighbours the big car B. to show he had a rich friendC .to let his brother ride in the car D. to tell his brother about his wish( )9．We can infer(推断)from the story that ________．A.Paul couldn’t understand the urchinB. the urchin had a deep love for his brotherC. the urchin wished to have a rich brotherD .the urchin’s wish came true in the end( )10．The best name of the name story is _________．A. A Christmas PresentB. A Street UrchinC. A Brother Like ThatD. An Unforgettable Holiday RideC“Cool” is a word with many meanings．Its old meaning is used to express (表达)a temperature that is a little bit cold．As the world has changed，the word has had many different meanings．“Cool” can be used to express feelings of interest in almost anything．When you see a famous car in the street，maybe you will say，“It’s cool．”You may think，“He’s so cool，”when you see your favourite footballer．We all maximize(扩大) the meaning of “cool”．You can use it instead of many words such as “new” or“surprising”．Here’s an interesting story we can use to show the way the word is used．A teacher asked her students to write about the waterfall(瀑布)they had visited．On one student’s paper was just the one sentence(句子)，“It’s so cool．Maybe he thought it was the best way to show what he saw and felt．But the story also shows a scarcity(缺乏)of words．Without “cool”，some people have no words to show the same meaning．So it is quite important to keep some credibility(可信性)．Can you think of many other words that make your life as colourful as the word “cool”？ I can．And I think they are also very cool．( )11.We know that the word “cool has had ________.A.only one meaningB. no meaningsC. many different meanings D .the same meaning( )12.In the passage，the word “express”means“________”.A．see B．show C．know D．feel( )13.If you are _______ something，you may say，“It’s cool．”A．interested in B．angry about C．afraid of D．unhappy with ( )14.The writer takes an example to show he is ________ the way the word is used．A．pleased with B．strange to C．worried about D．careful with ( )15.In the passage，the writer suggests(暗示)that the word “cool”________．A. can be used instead of many words B .usually means something interestingC. can make your life colourful D．may not be as cool as it seems四、任务型阅读（10分）每空一词。
寒假作业2
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物理（60 分钟） A．它们都是一种计时仪器
腊月十七上午
B．它们都使用 10V 以下交流电压 运动的描述 2 1．如图所示，一物体沿三条不同的路径由 A 运动 到 B，下列关于它们的位移 的大小说法正确的是（ A．沿Ⅰ较大 B．沿Ⅱ较大 C．沿Ⅲ较大 D．一样大 2．路程和位移的关系正确的是（ ） 9． 一物体以 5 m/s 的速度垂直于墙壁碰撞后， 又以 5m/s 的速度反弹回来．若物体与墙壁作用时间 为 0.2 s，取碰撞前初速度的方向为正方向，那 么物体与墙壁碰撞的过程中，物体的加速度为 （ ） ）)
11 ．在匀速直线运动中，一个物体的平均速度是 10m/s， 他在各段的平均速度大小是______ m/s， 瞬时速度是______ m/s． 12． 一辆汽车在一条直线上行驶， 第 1 s 内通过 8m， 第 2s 内通过 20m，第 3s 内通过 30m，第 4s 内通过 10m，则此汽车最初 2 s 内的平均速度 是______ m/s， 中间 2 s 内的平均速度是______ m/s，全部时间内的平均速度是______ m/s． 13．如图所示是一个物体向东运动的速度图象．由 图 可 知 在 0 ～ 10s 内 物 体的 加 速 度大 小 为 ________，方向是________，在 10 s～40 s 内 物体的加速度为________； 在 40s～60s 内物体 的 加 速 度 大 小 是 ________ ， 方 向 是 ________．
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C．它们都使用 220V 交流电压 D．它们分别使用 10V 以下和 220V 交流电压 8．打点计时器打点的周期，决定于（ A．交流电压的高低 B. 交流电的频率 C．永久磁铁的磁性强弱 D. 振针与复写纸间的距离． ）
钦州二中高三寒假作业2
钦州二中2013年秋季学期高三语文寒假作业（二）出题人：黎廷宪审题人：刘凝思一、基础题。
（12分，每小题3分）1．下列词语中加点的字，每对读音都不相同．．．．的一组是A．肄．业/肆．扰懈．怠/亵．渎押解．/浑身解．数B．聒．躁/恬．静咯．血/炮烙．中．肯/一语中．的C．戳．穿/杀戮．希冀．/契．约咀嚼．/咬文嚼．字D．国粹．/荟萃．悭．吝/信笺．拓．本/落拓．不羁2．下列各句中，加点词语使用正确的一句是A．下半年，部分银行严格控制甚至暂时停止购房贷款的发放，“房贷荒”开始在各地不同程度地出现，并有逐步漫延．．的趋势。
B．基层法院的工作人员深入乡村，与村干部一起耐心调解村中的赡养纠纷、宅基地纠纷等，消融．．了村民问的矛盾、嫌怨，受到村民的欢迎。
C．美国“监控门”事件不断升级，这边中国、俄罗斯等国的批评之声未落,那边英、德等美国铁杆盟友又发表声明谴责，这令美国“老大哥”左支右绌．．．．,狼狈不堪。
D.广西南宁“科技·时尚”产品展上，“全景LED灯”“电子鱼”“钻石U盘”等一系列时尚感十足的科技产品纷纷亮相，着实让观众应接不暇．．．．。
3．下列各句中，没有语病的一句是A．搞清楚工人和企业主这些微观个体在劳动力市场上搜寻和匹配的行为，对于了解失业率的决定因素，解释工资的形成机制，制定降低失业率的政策都十分重要。
B．谁都知道，民主与法治是一个长期的过程，但在经济攻坚之后，现在确实已经到向新目标攻坚的时候了。
C．开征房产税，提高房产持有的成本，现阶段更是可以起到打击投机、打击囤积居奇作用，把市场上种种非真实需求的泡沫挤掉，从而对平抑房价起到立竿见影的效果。
D．在部分舆论看来，本属于全民娱乐、全民福利的春晚，用广告践踏公众眼球给公众添堵，使春晚这台公共节目丧失了“公共性”，挑战的是国家电视台的职业操守。
4．下列各句中，，标点符号使用正确的一句是A．阿拉法特是否因中毒而死？如果是的话,投毒者是以色列情报人员?这是巴勒斯坦反对派人士？有的疑问可通过尸检解答，而有的则可能成为永远的谜。
部编版九年级上册语文寒假作业2(含答案解析)
部编版九年级上册语文寒假作业21.下列句子中没有语病的一项是（）A.著名作家吴伯箫的籍贯是山东莱芜人，他的散文大多以小见大，善于从平凡中挖掘出深刻的内涵。
B.党的十九大会议上，众代表积极讨论并认真听取了李克强总理作的政府工作报告。
C.通过《经典咏流传》节目的播出，让观众在一众唱作歌手的演绎中领略诗词之美。
D.莲花台风景区成为我省继崆峒山、麦积山、敦煌鸣沙山风景区后第四个国家级风景名胜区。
2.下列句中没有语病的一项是（）A.中国不仅是“一带一路”建设的倡议者，更是负责任的参与者、有担当的行动者。
B.通过参加这次活动，使我对中国博大精深的书法艺术产生了浓厚的兴趣。
C.《红海行动》在影片质感和人物情节方面突破了一大步的跨越。
D.防止校车安全事故不再发生是个系统工程，需要多方面、多领域齐心协力完成。
3.下列句子中，没有语病的一项是（）A.《奔跑吧，兄弟》综艺节目深受欢迎的主要原因是其形式新颖、内容丰富造成的。
B.读书切忌不能偷懒，只有勤奋好学，脚踏实地，才能获取知识。
C.经探索发现，火星上不仅有四季、大气和重力，还有水、冰、河道的痕迹。
D.这次大赛掀起了我校同学们书写汉字，激发了他们对汉字、书法等传统文化的兴趣。
4.下列句子没有语病的一项是（）A.感动中国人物钱伟长不仅是当代科技工作者的典范，乐于帮助其他人，因此我们要向他学习。
B.“最美妈妈”吴菊萍，奋不顾身托住小生命，是近年来涌现出的英雄模范人物之一。
C.日本能否在短时间内消除核泄漏带来的严重污染，依赖于科学技术及政府的重视。
D.通过音乐名人高晓松案醉驾入刑的宣判执行，使酒后驾车的人越来越少了。
5.下列各句中有语病的一项是（）A.我并不是否认你学习的进步，而是说你应该制定更合理的学习计划。
B.通过自我风采展示活动，同学们了解了你，你对自己和同学也有了更深入的认识。
C.在中华文明悠久的历史中，爱国主义精神一直是中华民族得以发展、生存和凝聚的动力。
D.优化能源结构是推动我国能源革命的本质要求和经济社会转型发展的迫切需要。
七年级英语冀教版 寒假作业(2)
寒假作业（2）一、单选题1.—_____is your mum?—She is fine. Thank you.A. WhereB. HowC. WhatD. Who2.—Is her name Kate?—_____.A. Yes, she isB. No, she isn'tC. Yes, it'sD. No, it isn't3.I have _____ eraser and five _____ in my pencil box.A. a; pencilsB. a; pencilC. an; pencilsD. an; pencil4.—_____ that an English girl?—_____, she's a Chinese girl.A. Is; YesB. Is; NoC. Are; NoD. Are; Yes5.—Sandy, is Mr. Li in the teachers' office now?—I am not sure. He _____ be there.A. mustB. can'tC. mustn'tD. may6.The students do experiments(实验) in the _____. They learn a lot there.A. playgroundB. labC. libraryD. office7.The boy is from _____. He's _____.A. Chinese; ChinaB. China; ChineseC. Chinese; ChineseD. China; China8.—______ going shopping tomorrow?—Good idea.A.How aboutB.WhatC. What'sD.How9.Six and four is _______.A. nineB.tenC. elevenD. twelve10.—Sally, what about going to the classroom?—_________.A. You're welcomeB. Nice to meet youC. Have a good dayD. That sounds good二、连词成句1.is, classmate, my, Nick______________________________________.2.to, welcome, class, our______________________________________3.she, from, is, Japan, not______________________________________4.very, thank, much, you______________________________________!5.from, are, Shanghai, you____________________________________________?三、完形填空Hello! 1 name is Li Ying. I'm twelve. I'm from Kunming. Now I'm in Beijing No.14 Middle School. I'm 2 Class Five, Grade Seven. Miss Gao 3 my English teacher. She is 4 old teacher. I have a pen, a ruler and two 5 in my pencil box. Liu Ping is in Grade Seven, too. 6 is from Guangzhou. She is my good 7 . We are in 8 same class. Now she can 9 English well. I think she is a good girl. Look! 10 is that? She is Liu Ping.1.A.I B.My C.Your D.Me2.A.from B.to C.not D.in3.A.is B.are C.am D.be4.A.a B.an C.good D./5.A.buses B.desks C.schoolbags D.pencils6.A.He B.His C.She D.Her7.A. friend B. teacher C. student D.mom8.A.these B.the C.an D.a9.A. spell B. speak C.help D.see10.A. How B.What C.Where D.Who四、阅读理解Tom and Tony are classmates. Tom is 12 and Tony is 13 years old. They are in Class 3, Grade 7 in No.33 Middle School.One day, they can't write their names well. Their English teacher Mr. Green is angry(生气的) with them. He asks them to write their names a hundred times(一百遍). Tony cries(哭). The teacher says, "Why are you crying?"Tony says, "Tom's name is Tom Hill. He can finish writing his name1.How old is Tom?A.10.B.11.C.12.D.13.2.Which class is Tony in?A.Class One.B.Class Two.C.Class Three.D.Class Seven.3.Why is their English teacher angry with them?A.They are late for class.B.They can't do their homework.C.They can't write their names well.D.They can't read their names well.4.What does Tony do after Mr. Green asks him to write his name a hundred times?A.He is happy.B.He cries.C.He goes home.D.He writes well.A.I am slow.B.Tom is fast.C.His name is too long.D.But my name is too long.五、写作假如你是Peter,你很想用英文给你的网友Jack写一封信来介绍你的初中生活,请根据思维导图完成信件。
寒假作业2
遂宁东辰荣兴国际学校高2015级地理寒假作业 时长：40分钟 使用时间：2014级 月 日 编号：002编写人：程均 审题人：宁显万 学生姓名： 评分《寒假作业2》读下图，回答1—2题1．有关图中四个国家自然地理特征的叙述，不正确的是 ( )A ．甲国地势西高东低，平原、高原面积广阔B ．乙国以热带季风气候为主，旱、雨季分明C ．丙国河流较少，但中部地区地下水丰富D ．丁国有世界最长的河流流经2．图示四国都有回归线穿过，其中没有沙漠的国家是 ( )A ．甲B ．乙C ．丙D ．丁 图中甲位于华北平原，乙位于长江中下游平原。
回答3～6题。
3. 甲、乙两地耕作制度不同，造成这种差异 的主要自然因素是（ ）A.海拔B.热量C.水分D.土壤4. 甲、乙两地共有的地理现象是（ ）A.广泛种植水稻B.雨热同期C.冬季河流结冰D.水运发达5. 甲地楼房南北间距一般大于大于乙地，其 影响因素主要是（ ） A. 河流流向 B.海陆位置 C. 纬度位置 D.盛行风向6. 目前甲、乙两地可持续发展所面临的问题 分别是（ ） A.旱涝盐碱危害、水土流失严重 B.多风沙危害、水资源短缺 C.生态破坏严重、多旱涝灾害 D.水资源短缺、酸雨危害较严重 下图为世界某一区域，该区域在较长时期内受图中气压系统控制。
回答7～9题。
20° 40° 4030 乙甲7． 若某科考队从甲到乙进行横跨半岛的地质地貌考察，该考察线路的直线距离约为( )A ．280kmB ．550kmC ． 1100kmD ． 760km 8．科考队在野外考察之际，当地的天气状况是( )A ．低温干燥B ．晴热干燥C ．高温多雨D ．温和多雨 9．图示气压系统较长时间控制该区域时 ( )A ．海轮向东横渡北印度洋顺风顺流B ．南极昆仑站出现极昼现象C ．东北平原时常受寒潮侵袭D ．鄱阳湖流域大批候鸟栖息图甲为某地牧草成长与乳牛草料需求关系图，图乙为该地气候资料。
济源四中高一上期寒假作业(2)
济源四中高一数学寒假作业（二）必修一综合一、选择题：1、【C类】下列四个集合中，空集是 ( )A.{0}B.{x|x>8,且x<5}C.{x∈N|x2-1=0}D.{x|x>4}2、【C类】集合{y∈N|y=-x2+6,x∈N}的真子集的个数是 ( )A.9B.8C.7D.63、【C类】设A={直角三角形},B={等腰三角形},C={等边三角形},D={等腰直角三角形},则下列结论不正确的是( )A.A∩B=DB.A∩D=DC.B∩C=CD.A∪B=D4、【C类】全集U={x∈N+|-2<x<9},M={3,4,5},P={1,3,6},则{2,7,8}是( )A.M∪PB.M∩PC.(C U M)∪(C U P)D. (C U M)∩(C U P)5、【C类】下列图形表示函数图像的是 ( )6、【C类】下列对应关系f中, 不是从M到N的一一映射的是 ( )A.M={0,1,2,…},N={0,1,2}, f:M中的元素对应它除以3的余数B.M={平面上的点},N={(x,y)|x,y∈R}, f:M中元素对应在平面上的坐标C.M={高一年级同学},N={是,否}, f:M中元素对应他今天的出勤情况D.M=R,N=R, f:M中的元素对应它的倒数7、【C类】对于二次函数f(x)=3x2-12x+1,下列说法不正确的是 ( )A.图像开口向上,对称轴是x=2,顶点坐标为(2,-11)B.在x∈(-∞,2)上是递减的,在x∈(2,+∞)上是递增的C.图像与x轴有两个交点且交y轴于点(0,1)D.在x∈[1,4]上有最小值f(1)和最大值f(4)8、【B类】下列函数既是幂函数,又是奇函数的是 ( )A.y=3x3+2B.y=x-1, x∈(-3,0)C.y=x3D.y=2(x+1)2+19、【B类】若0<a<1,b<-1,则函数f(x)=a x+b的图像不经过 ( )A.第一象限B.第二象限C.第三象限D.第四象限10、【B类】已知集合A={x|x<-1或x>1},B={x|log2x>0},则A∩B等于 ( )A.{x|x>1}B. {x|x>0}C. {x|x<-1}D. {x|x<-1或x>1}11、【A类】方程3x-x2=0的解所在的区间是 ( )A.(-2,-1)B.(-1,0)C.(0,1)D.(1,2) 12、【A类】设y1=40.9,y2=80.48,y3=(0.5)-1.5,则有 ( )A. y3>y1>y2B. y2>y1>y3C. y1>y2>y3D. y1>y3>y2二、填空题：13、【C类】用列举法表示集合{NxNx∈-∈66|}为:_________________.14、【C类】函数231log2-=xy的定义域为:___________________.15、【B类】方程log2（x-2）-x2=0的解的个数为:____________.16、【A类】求值:84log27log9=_________.三、解答题：17、【C类】求值:(1)3749log+827log9log32∙+29log(log3)+3log29.(2)21433221312132)0016.050027.0(41[]343)161(125[--⨯++++]18、【C 类】将函数f(x)=-3x 2+2x-1配方,确定其对称轴,顶点坐标,求出它的单调区间及最大值和最小值,并画出它的图像.19、【B 类】画函数)4(||)(-=x x x f 的图像，并写出其单调区间和值域.20、【B 类】函数1212)(+-=x x x f .证明:(1)f(x)是奇函数;(2)f(x)在R 上是递增的.21、【B 类】某租赁公司拥有汽车100辆，当每辆车的月租金为3000元时，可全部租出，当每辆车的月租金每增加50元时，未租出的车将会增加一辆，租出的车每辆每月需维护费150元，未租出的车每辆每月需要维护费50元。
高三数学寒假作业(2)及答案
有一项是符合题目要求的）1.已知集合(){}|30M x x x =-<，{}|2N x x =<，则MN =( )A ．()0,2-B ．()2,0C ．()3,2D ．()3,2- 2．已知命题2:,210,p x R x ∀∈+>则（ ） A ．2:,210p x R x ⌝∃∈+≤ B ．2:,210p x R x ⌝∀∈+≤ C ．2:,210p x R x ⌝∃∈+<D ．2:,210p x R x ⌝∀∈+<3．向量a =（1，-2），b =（6，3），则a 与b 的夹角为( ) A ．60︒ B ．90︒ C ．120︒ D ．150︒ 4．在△ABC 中，角A 、B 、C 的对边分别为a 、b 、c , 已知A =3π, a =3, b =1，则c = ( )A ．1B ．2C ．3—1D ．3 5．已知两条直线,m n ，两个平面,αβ，给出下面四个命题： ①//,m n m n αα⊥⇒⊥ ②//,,//m n m n αβαβ⊂⊂⇒ ③//,////m n m n αα⇒ ④//,//,m n m n αβαβ⊥⇒⊥其中正确命题的序号是( ) A ．①③ B ．②④ C ．①④ D ．②③6.函数)sin()(ϕω+=x x f (,0,02)x R ωϕπ∈>≤<的部分图象如图，则 （ ）A ．ω＝2π，ϕ＝4πB ．ω＝3π,ϕ＝6πC ．ω＝4π,ϕ＝4πD ．ω＝4π,ϕ＝45π131oy x7.三个学校分别有1名、2名、3 名学生获奖，这6名学生排成一排合影，要求同校的任两名学生不能相邻，那么不同的排法有( ) A ．36种B ．72种C ．108种D ．120种8．如图，设点P 为△ABC 内一点，且AP →= 25 AB → + 15AC → ，则△ABP 的面积与△ABC 的面积之比是（ ） A ．2：5 B . 1：5C . 1：4D . 1：39.已知{(,)|6,0,0}x y x y x y Ω=+≤≥≥，{(,)|4,0,20}A x y x y x y =≤≥-≥，若向区域Ω上随机投一点P ， 则点P 落入区域A 的概率为( ) A ．31 B ．32 C ．91 D ．92 10.已知双曲线12222=-y ax 的一条准线与抛物线x y 42-=的准线重合，则该双曲线的离心率为 （ ） A.22B.2C.2D.21二、填空题：本大题共7个小题，把答案填在题中横线上.11.若a =)1,8(-，b =)4,3(，则a 在b 方向上的投影是 ; 12．复数ii++12的共轭复数是 . 13.已知x 、y 满足y x z k y x x y x 420,305+=⎪⎩⎪⎨⎧≥++≤≥+-且的最小值为－6，则常数k= . 14．若)2,0(,135)4sin(πααπ∈=-且，则)4cos(2cos αα+值为 .15．如图，函数)(x f y =的图象在点P 处的切线方程是8+-=x y ，则)5()5(f f '+= .16．若1)2(33)(23++++=x a ax x x f 有极大值和极小值，则a 的取值 范围是____________17．下列程序执行后输出的结果是 . i =11 s=1 DO s=s* i i = i －1 LOOP UNTIL i <9 PRINTs END三、解答题：本大题共4小题，解答应写出文字说明、证明过程或推演步骤.18.已知函数f(x)=2cosx(sinx-cosx)+1，x ∈R. (1)求函数f(x)的最小正周期T ； (2)求函数f(x)的单调增区间；(3)求函数f(x)在区间⎥⎦⎤⎢⎣⎡43,8ππ上的最小值和最大值.19．已知函数)1(log )()()1(>==+a x f x g y x a与的图象关于原点对称.（1）写出)(x g y =的解析式；（2）若函数m x g x f x F ++=)()()(为奇函数，试确定实数m 的值； （3）当)1,0[∈x 时，总有n x g x f ≥+)()(成立，求实数n 的取值范围.21.如图，在正方体1111D C B A ABCD -中，E 、F 分别是BB 1的中点． （１）证明F D AD 1⊥； （２）求AE 与F D 1所成的角； （３）证明：面⊥AED 面11FD AA 1寒假作业3答案一、选择题1-5 BABBC 6-10 CDBDB二、填空题11.-4 12.2123+i 13.0 14．132415．211 16.12-<>a a 或 17.990 三、解答题18(1)T=π (2))(83,8Z k k k ∈⎥⎦⎤⎢⎣⎡++-ππππ(3)最小值-1…，最大值2…19．解：（1）设M （x ，y ）是函数)(x g y =图象上任意一点， 则M （x ，y ）关于原点的对称点为N （－x ，－y ）N 在函数)1(log )(+=x x f a 的图象上，)1(log +-=-∴x y a)1(log x y a --=∴ （2）m x F x ax a+-=-+)1()1(log log )( 为奇函数.mm x F x F x ax ax ax a-+-=+-∴-=-∴-++-)1()1()1()1(log log log log )()(00log log log 211111=∴==+=∴+--+m m a xx a xxa（3）由n n x g x f xx a ≥≥+-+11log ,)()(得设)1,0[,11log )(∈-+=x x xa x Q ，即可只要由题意知n ≥min Q(x),,)121(log )(xax F -+-= 在[0，1)上是增函数.0)0()(min ==∴Q x Q 即0≤n 即为所求.20.解：(I)将事件“第一次、第三次均抽到白球”记作A ，则P (A ) = 16 ⨯16 =136A1(II)设 ξ 是三次抽取中抽到白球的次数，则 ξ~ B (3,16 )ξ 的分布列为E ξ = 3·P (A ) = 3·16 = 1221.（1）证明：因为AC 1是正方体，所以AD ⊥面DC 1。
高一上学期数学寒假作业二
启明班寒假作业二学校:___________姓名：___________班级：___________考号：___________一、单选题1．若函数2(0)3y x πωω⎛⎫=-> ⎪⎝⎭两零点间的最小距离为2π，则ω=（ ）A ．1B ．2C ．3D ．42．已知函数()2sin()0,||2f x x πωϕωϕ⎛⎫=+>< ⎪⎝⎭，其图象与直线1y =的相邻两个交点的距离分别为3π和23π，若13 f π⎛⎫= ⎪⎝⎭，则ϕ的值为（ ）A ．6π B ．6π- C ．3π- D ．3π3．设函数())f x x ωϕ=-，x ∈R ，其中0ω>，||ϕπ<.若08f π⎛⎫-= ⎪⎝⎭，58f π⎛⎫= ⎪⎝⎭()f x 的最小正周期大于2π，则（ ）A ．13ω=，1124πϕ=B ．13ω=，712πϕ=-C ．23ω=，1112πϕ=D ．23ω=，12πϕ=-4．已知函数()()sin 06f x x πωω⎛⎫=+> ⎪⎝⎭在区间,2ππ⎡⎤⎢⎥⎣⎦内单调递减，则实数ω的取值范围是（ ）A ．2,13⎡⎤⎢⎥⎣⎦B ．24,33⎡⎤⎢⎥⎣⎦C ．[)1,2D ．3,22⎡⎫⎪⎢⎣⎭5．已知函数()()sin f x x α=+在,43x ππ⎛⎫∈- ⎪⎝⎭上单调递增，则α的值可以是（ ）A ．3π-B ．4π-C ．4π D ．3π 6．若函数()()()sin πf x x ϕϕ=+<在π2π,33-⎡⎤⎢⎥⎣⎦上单调，则ϕ的值为（ ）A ．2π3-或π3B ．π3-或2π3C ．5π6-或6π D ．π6-或5π6 7．若函数()πsin 23f x x ⎛⎫=- ⎪⎝⎭与()πcos 4g x x ⎛⎫=+ ⎪⎝⎭都在区间()(),0πa b a b <<<上单调递减，则b a -的最大值为（ ）A ．π3B ．π2C ．6πD ．π 8．若函数()2sin 23f x x πϕ⎛⎫=-+ ⎪⎝⎭是奇函数，则ϕ的值可以是（ ）A ．56π B ．2π C ．23π-D ．2π-9．函数()sin 23f x x πϕ⎛⎫=++ ⎪⎝⎭为偶函数的一个充分条件（ ）A ．6πϕ=B ．6πϕ=-C ．3πϕ=D ．3πϕ=-10．已知函数()sin 22f x x x =，若函数()y f x ϕ=-为奇函数，则||ϕ的最小值是（ ） A ．12π B ．6π C ．3π D ．712π 11．已知函数()sin(2)f x x ϕ=+的图象关于点π,06⎛⎫⎪⎝⎭中心对称，则||ϕ的最小值为（ ）A ．π6B ．π3C ．2π3D ．4π312．将函数2sin()3y x π=+的图象向左平移()0m m >个单位长度后，所得到的图象关于y 轴对称，则m 的最小值是（ ） A ．12π B ．6π C ．3π D ．23π13．已知函数()21cos cos (0,)2f x x x x a x R ωωω=+->∈在[]0,π内有且仅有三条对称轴，则ω的取值范围是（ ） A ．27,36⎛⎫ ⎪⎝⎭B ．75[,)63C ．513,36⎫⎡⎪⎢⎣⎭D ．138,63⎛⎫ ⎪⎝⎭14．已知函数π()sin (0)3f x x ωω⎛⎫=-> ⎪⎝⎭在(π,2π)内不存在对称中心，则ω的取值范围为（ ）．A ．12,33⎡⎤⎢⎥⎣⎦B ．20,3⎛⎤ ⎥⎝⎦C ．10,6⎛⎤⎥⎝⎦ D ．1120,,633⎛⎤⎡⎤⋃ ⎥⎢⎥⎝⎦⎣⎦15．若函数()sin (0)3f x x πωω⎛⎫=+> ⎪⎝⎭在区间(),2ππ内没有最值，则ω的取值范围是（ ）A ．1120,,1233⎛⎤⎡⎤⋃ ⎥⎢⎥⎝⎦⎣⎦B ．1170,,12612⎛⎤⎡⎤ ⎥⎢⎥⎝⎦⎣⎦C ．70,12⎛⎤ ⎥⎝⎦D ．12,33⎡⎤⎢⎥⎣⎦ 16．若函数()sin 6f x x πω⎛⎫=+ ⎪⎝⎭（0ω>）在,44ππ⎛⎫- ⎪⎝⎭有最大值无最小值，则ω的取值范围是（ ）A ．48,33⎛⎫ ⎪⎝⎭B ．48,33⎛⎤ ⎥⎝⎦C ．416,33⎛⎫ ⎪⎝⎭D ．416,33⎛⎤ ⎥⎝⎦17．已知函数()()sin cos 0f x x a x a =+>的最大值为2，若方程()f x b =在区间13π0,6⎛⎫⎪⎝⎭内有三个实数根123,,x x x ，且123x x x <<，则1232x x x ++等于（ ）A ．8π3 B ．10π3C ．4πD ．25π618．已知函数()()22cos 10,2xf x x x ωωω=->∈R ，若函数()f x 在区间(),2ππ上没有零点，则ω的取值范围是（ ） A ．55110,,12612⎛⎤⎡⎤⎥⎢⎥⎝⎦⎣⎦ B ．211,312⎡⎤⎢⎥⎣⎦ C ．511,612⎛⎫⎪⎝⎭D ．250,,1211312⎛⎫ ⎪⎝⎝⎛⎤ ⎥⎦⎭19．已知函数()()1sin 0f x x x ωωω=+>在()0,π上有且只有3个零点，则实数ω的取值范围是（ ） A ．1137,26⎛⎤ ⎥⎝⎦B ．137,62⎛⎤ ⎥⎝⎦C ．725,26⎛⎤ ⎥⎝⎦D ．2511,62⎛⎤ ⎥⎝⎦20．已知函数()()sin 0,2f x x πωϕωϕ⎛⎫=+>< ⎪⎝⎭图象的两相邻对称轴之间的距离为2π，且3f x π⎛⎫+ ⎪⎝⎭为偶函数，则ϕ=（ ）A ．6π B ．6π- C ．3π- D ．3π21．若直线12x π=是曲线()sin 04y x πωω⎛⎫=-> ⎪⎝⎭的一条对称轴，且函数sin 4y x πω⎛⎫=- ⎪⎝⎭在区间0,12π⎡⎤⎢⎥⎣⎦上不单调，则ω的最小值为（ ）A ．9B ．15C ．21D ．3322．已知函数()()sin 06f x x πωω⎛⎫=-> ⎪⎝⎭在区间3,34ππ⎡⎤-⎢⎥⎣⎦上单调递增，且在区间[]0,π上只取得一次最大值，则ω的取值范围是（ ）A ．30,4⎡⎤⎢⎥⎣⎦ B ．80,9⎛⎤ ⎥⎝⎦ C ．28,39⎡⎤⎢⎥⎣⎦ D ．38,49⎡⎤⎢⎥⎣⎦23．已知函数()()sin 0,0,2f x A x A πωϕωϕ⎛⎫=+>>< ⎪⎝⎭，若函数()f x 的一个零点为6π．其图像的一条对称轴为直线512x π=，且()f x 在,64ππ⎛⎫ ⎪⎝⎭上单调，则ω的最大值为（ ）A ．2B ．6C ．10D ．1424．已知函数()sin()(0,0)f x A x ωϕωϕπ=+><<为偶函数，在0,3π⎡⎫⎪⎢⎣⎭单调递减，且在该区间上没有零点，则ω的取值范围为（ ） A ．30,2⎛⎫ ⎪⎝⎭B ．31,2⎡⎤⎢⎥⎣⎦C ．35,22⎡⎤⎢⎥⎣⎦D ．30,2⎛⎤ ⎥⎝⎦二、填空题25．已知函数()cos f x x x ωω-(0)ω>的最小正周期为π，则ω=___．26．已知函数()()sin f x x ω=（0ω>）在区间ππ,123⎛⎤- ⎥⎝⎦上单调递增，在区间π5π,312⎡⎫⎪⎢⎣⎭上单调递减，则ω的值是______．27．已知函数()sin 2062f x x ππϕϕ⎛⎫⎛⎫=++<< ⎪ ⎪⎝⎭⎝⎭在,32ππ⎛⎫ ⎪⎝⎭上单调递增，则ϕ的取值范围为_________．28．将函数()sin (0)6f x x πωω⎛⎫=+> ⎪⎝⎭图像上所有点的横坐标伸长到原来的2倍，再向右平移6π个单位长度，得到函数()y g x =的图像，若函数()y g x =为偶函数，则ω的最小值为_________．29．已知函数()()()sin 0,0f x x ωϕωϕπ=+><<，且()f x 与()3f x π+均为偶函数，则ω的最小值是______.30．已知函数()()ππsin 22f x x ϕϕ⎛⎫=+-<< ⎪⎝⎭的图像关于直线π4x =对称，则ϕ=__________．31．若函数sin y x ω=（0ω>）在区间[]0,2上恰好取到3次最小值，请写出一个符合题意的ω的值：___________. 32．已知函数()π2sin 6f x x ω⎛⎫=+ ⎪⎝⎭中x 在任意的15个单位长度的距离内能同时取得最大值和最小值，那么正实数ω的取值范围是________.33．设函数()()sin 03f x x πωω⎛⎫=-> ⎪⎝⎭，若()f x 在0,2π⎛⎫ ⎪⎝⎭上有且仅有2个零点，则实数ω的取值范围为______.34．已知函数()sin (0)f x x x ωωω=>，若函数()f x 的图像在区间π()0,x ∈上恰有2个零点，则实数ω的取值范围为__________. 35．函数()()4sin 6f x x πωω*⎛⎫=+∈ ⎪⎝⎭N ，若,06π⎛⎫- ⎪⎝⎭是()f x 的一个对称中心，且()f x 在52,369ππ⎛⎫ ⎪⎝⎭上单调，则ω的最小值为_________．36．已知函数π()sin (0)6f x x ωω⎛⎫=+> ⎪⎝⎭，若π3f x ⎛⎫+ ⎪⎝⎭为偶函数，()f x 在区间π7π,312⎛⎫ ⎪⎝⎭内单调，则ω的最大值为_________.37．已知函数()2sin f x x ω=（0ω>）在区间3,43ππ⎡⎤-⎢⎥⎣⎦上单调递增，且函数()2sin 2g x x ω=+在[]2,0π-上有且仅有一个零点，则实数ω的取值范围是_______. 38．已知函数()()sin f x x ωϕ=+（其中0ω>，2πϕ<），若()0f T =（T 为周期），4x π=是函数()f x 图像的一条对称轴，()f x 在区间3,816ππ⎛⎫⎪⎝⎭上单调，则ω的值为______．。
人教版 高一 必修一 寒假作业(2)物质的分类(带答案)
寒假作业（2）物质的分类一、单选题1.下列说法不正确的是()①只含有一种元素的物质一定是纯净物②生石灰做干燥剂涉及化学变化③酸性氧化物都能与水反应生成酸④碱性氧化物一定是金属氧化物⑤用鸡蛋壳膜和蒸馏水除去淀粉胶体中的食盐不涉及化学变化⑥两种盐反应一定生成两种新盐A. ①③⑥B. ①②③④⑤C. ②④⑥D. ②④⑤2.下图所表示的一些物质或概念间的从属关系不正确的是()A. AB. BC. CD. D3.下列分类或归类正确的是①液氯、氨水、干冰、碘化银均为纯净物②CaCl2、NaOH、HCl、IBr均为化合物③明矾、水银、烧碱、硫酸均为电解质④火碱、纯碱、碳酸钙都是电解质⑤碘酒、淀粉、水雾、纳米材料均为胶体A. ①③④B. ②③C. ②④D. ②③④⑤4.下列有关分类的说法正确的是()A. 胶体的本质特征是具有丁达尔效应B. 阳离子、阴离子中均分别只含有一种元素，则由这样的阴、阳离子组成的物质一定是纯净物C. 白磷转化为红磷是物理变化D. 碱性氧化物一定是金属氧化物，酸性氧化物不一定是非金属氧化物5.下列说法不正确的是()①只含有一种元素的物质一定是纯净物②生石灰做干燥剂涉及化学变化③酸性氧化物都能与水反应生成酸④碱性氧化物一定是金属氧化物⑤用鸡蛋壳膜和蒸馏水除去淀粉胶体中的食盐不涉及化学变化⑥两种盐反应一定生成两种新盐A. ①③⑥B. ①②③④⑤C. ②④⑥D. ②④⑤6.分类法在化学学科的发展中起到了非常重要的作用，下列分类标准合理的是()A. 根据是否具有丁达尔效应，将分散系分为溶液、浊液和胶体B. 依据分子组成中是否含有氧元素，将酸分为含氧酸和无氧酸C. 根据水溶液是否能够导电，将物质分为电解质和非电解质D. 依据组成元素的种类，将物质分为单质和化合物7.下列说法正确的是()①Na2O、Fe2O3、Al2O3属于碱性氧化物，CO2、SiO2、NO2都能和碱溶液发生反应属于酸性氧化物②碳酸钠、氢氧化钡、氯化铵、过氧化钠都属于离子化合物③混合物：漂白粉、水玻璃、Fe(OH)3胶体、冰水混合物④醋酸、烧碱、纯碱和生石灰分别属于酸、碱、盐和氧化物⑤硅导电，铝在浓硫酸中钝化均属于物理变化⑥盐酸属于混合物，而液氯、冰醋酸均属于纯净物。
_高中英语寒假作业2Unit2Onwardsandupwards含解析外研版选择性必修第一册
寒假作业第一部分阅读理解（共两节，满分50分）第一节（共15小题；每小题2.5分，满分37.5分）阅读下列短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。
AThe Lake District Attractions GuideDalemain Mansion & Historic GardensHistory, Culture & Landscape (景观). Discover and enjoy 4 centuries of history, 5 acres of celebrated and award-winning gardens with parkland walk. Owned by the Hasell family since 1679, home to the International Marmalade Festival. Gifts and antiques, plant sales, museums & Mediaeval Hall Tearoom.Open:29 Mar—29 Oct, Sun to Thurs.Tearoom, Gardens & Gift Shop: 10.30—17.00 (16.00 in Oct).House: 11.15—16.00(15.00 in Oct).Town:Pooley Bridge & PenrithAbbot Hall Art Gallery & MuseumThose viewing the quality of Abbot Hall's temporary exhibitions may be forgiven for thinking they are in a city gallery. The impressive permanent collection includes Turners and Romneys and the temporary exhibition programme has Canaletto and the artists from St Ives.Open:Mon to Sat and Summer Sundays. 10.30—17.00 Summer. 10.一16.00 Winter. Town: KendalTullie House Museum & Art GalleryDiscover, explore and enjoy award-winning Tullie House, where historic collections, contemporary art and family fun are brought together in one impressive museum and art gallery. There are four fantastic galleries to visit from fine art to interactive fun,so there's something for everyone!Open:High Season 1 Apr—31 Oct: Mon to Sat 10.00— 17.00, Sun 11.00—17.00.Low Season 1 Nov一31 Mar: Mon to Sat 10.00— 16.30, Sun 12.00—16.30.Town: CarlisleDove Cottage & The Wordsworth MuseumDiscover William Wordsworth's inspirational home. Take a tour of his Lakeland cottage, walk through his hillside garden and explore the riches of the collection in the Museum. Visit the shop and relax in the cafe. Exhibitions, events and family activities throughout the year.Open: Daily, 09.30—17.30( last admission 17.00).Town: Grasmere1. When is the House at Dalemain Mansion & Historic Gardens open on Sundays in July?A. 09. 30—17. 30.B. 10. 30—16. 00.C. 11. 15—16. 00.D. 12. 00—16. 30.2. What can visitors do at Abbot Hall Art Gallery &Museum?A. Enjoy Romney's works.B. Have some interactive fun.C. Attend a famous festival.D. Learn the history of a family.3. Where should visitors go if they want to explore Wordsworth's life?A. Penrith.B. Kendal.C. Carlisle.D. Grasmere.BChildren are excited to find brightly wrapped(包装的) presents under the tree on Christmas morning. They can't wait to open the wrapping and get the toys that were on their wish lists,such as toy cars. But after the excitement wears off, those toys are usually left to the corner of the toy box and the kids are searching for something else to do. But it doesn't have to be that way.A study from the University of Toronto found that giving your child experiences as a gift, instead of toys, improves your child's intelligence and makes stronger parent-child bonds. "Often the focus is only on whether someone likes a gift rather than focusing on a fundamental purpose of gift giving. Knowing that will foster(培养) relationships between the giver and the receiver,'' said lead researcher Cindy Chan.Chan suggested that when you are buying a holiday gift or birthday gift, you should buy something that kids can experience with you. This can be movie or concert tickets, a CD from a performance you already saw to keep the memory alive. For example,for kids, a trip to a museum, going ice-skating or a book that the family can read together over and over again are valuable gifts.It is found that giving your kids too many toys can be counterproductive(适得其反) and make kids at a loss. The best way to make kids happy is to spend time together.So, if you want happy and intelligent kids, spending time with them and making memories are the best gifts you can give them. That's not to say that there shouldn't be any toys but change the focus from getting things to making lasting memories.1.How do children usually deal with toys after the excitement disappears?A. They put them aside.B.They give them to their friends.C.They add them to the wish lists.D.They throw them into the rubbish bin.2.What should people focus on when buying gifts according to Cindy Chan?A. The advantage of giving toys.B.The purpose of giving gifts.C. The excitement caused by toys.D.The gift receiver's hobby.3.What did Cindy Chan advise parents to do in Paragraph 3?A.Do something together with kids.B.Give kids well-wrapped presents.C.Buy kids as many toys as possible.D.Encourage kids to do sport in school.4.What is the best title for the text?A. A lesson from kids at ChristmasB.The pleasure of giving and receivingC.Valuable gifts: popular among kidsD.Move over toys, and make room for memoriesCBee see, bee do. At least that's the conclusion of research published earlier this month in the journal PLOS Biology, showing that bumblebees learn to solve problems by watching each other.In the first study of its kind in insects,scientists constructed experiments that challenged bees to pull strings in order to access rewards of nectar(花蜜).The scientists hoped their study would throw light on a bigger picture: howsocial learning spreads through a population.In the study, Lars Chittka from Queen Mary University of London and his team made artificial flowers and filled them with artificial nectar made of sugar water. They put the flowers under a clear type of plastic and attached a string.Then they added bees. While most of the insects failed to reach the nectar, a few eventually figured out how to access it, by pulling the string.The team discovered that they could greatly increase the success rate of the bees by first placing them inside a transparent(透明的) box where they could observe an experienced bee pull the string. Then, when the boxed bees were released, they often knew what to do and successfully pulled the string to obtain nectar.Next, the researchers added a bee that was experienced in string pulling to each of three new groups that had never seen the experiment before. Within a short time, about half of all those bees were soon pulling the strings. That result suggests the learned behavior could spread from bee to bee, similar to the way cultural ideas spread in other animals, including people.The experiment suggests that social learning may be more widespread in the animal kingdom than people previously thought.1.What happened after the bee pulled the string?A. It joined others.B.It saw flowers.C. It found water.D.It got nectar.2.What did the boxed bees do after being set free?A.They watched the experienced bee work.B.They imitated the experienced bee.C.They flew directly to the rewards.D.They flew back to the box.3.Why was an experienced bee added to new bee groups?A.To reduce the difficulty of the experiment.B.To watch the process of string pulling.C.To carry the experiment further.D.To keep the bees' interest.4.What does the study find?A.Most animals create their own cultures.B.Strings are particularly attractive to bees.C.Animals may have good social learning ability.D.Bumblebees may be smarter than other bee species.DOne day, when Albert Einstein was a small boy, his father bought him a composs(指南针). It was a small toy to entertain him. Einstein was very pleased as he looked at the "magic," thing turning towards north. For him, the compass was not a toy but a new world.He was a curious child and would often daydream. His father was annoyed with him for the bad reports from his teachers. They told him that the boy was not interested in his studies. He was blamed by his father for being lost in his foolish dreams.On leaving school, his father wanted him to study electrical engineering. But he disliked becoming an engineer. He entered the Zurich Polytechnic Academy to prepare himself for a teaching position in mathematics and physics. Though he finished his studies, he was unable to get a job.Finally, he got a job in an office. In his spare time, he filled his notepaper with difficult mathematical formulas(公式). Some of these later led to great scientific discoveries. When they were published, he became a famous scientist. He could not take his daily walk without being surrounded by reporters. He would only smile at them, and went on with his work in his quiet way.In 1921, Einstein was awarded the Nobel Prize. The Queen of Belgium invited him to pay her a visit. He got off the train and walked to the palace. He wasn't willing to take the car sent to pick him up. When the Queen asked him, he looked at her with a smile and answered, "It was a very pleasant walk." Einstein disliked wealth. Peace, he said, was what the world needed, and that could not be bought with money.1.Why did Einstein's father buy him a compass?A. To satisfy his curiosity.B.To let him play with it.C.To develop his interest in science.D.To help him create a dream world.2.What does the underlined word "annoyed" in Paragraph 2 mean?A. Familiar.B. Strict.C. Angry.D.Content.3.What can we learn about Einstein from Paragraph 4?A. He cared little for fame.B.He was not good at talking.C.He was praised by the Queen.D.He didn't work as an officer for long.4.What is the author's purpose in writing the text?A. To introduce a new theory.B.To contribute to world peace.C. To remember a great scientist.D.To share some incidents about Einstein. 第二节（共5小题；每小题2.5分，满分12.5分）根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。