山西省太原市2018-2019学年高二上学期期中考试英语试题 扫描版含答案
一中2018-2019学年高二上学期期中考试英语试卷含答案
应县一中高二年级期中考试英语试题2018.10时间：120分钟满分：150分命题人：第I卷（三部分，共100分）第一部分: 听力（共两节，满分20分）第一节（共5小题；每小题1分，满分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答案，并标在试卷的相应位置。
听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。
每段对话仅读一遍。
1. What does the woman advise the man to do?A. Learn to use a new camera.B. Take the camera back to the shop.C. Clean the camera when taking pictures.2.Where will the woman probably live next year?A. In a rented room.B. In the dormitory.C. At home.3. What does the man not like about the blue shirt?A. Its style.B. Its color.C. Its size.4. Who paid 2, 330 dollars for a car?A. The woman.B. The man.C. Linda.5. What time is it by the man's watch?A. 1 : 40.B. 1 : 30C. 1 : 00.第二节：（共15小题；每小题1分，满分15分）听下面5段对话或独白。
每段对话或独白后有几个小题，从题中所A、B、C、三个选项中选出最佳选项，并标在试卷的相应位置。
听完每段对话或独白前后，你将有时间阅读各个小题，每小题5秒钟；听完后，各小题将给出5秒钟作答时间。
每段对话或独白读两遍。
听第6段材料，回答第6、7题6. How much is a ticket?A. 2 pounds.B. 3 pounds.C. 5 pounds.7. Why does the woman tell the man to get off the bus?A. They're at the last stop.B. They're at Woodford Green.C. The bus broke down.听第7段材料，回答第8、9题8. What did an Italian waiter teach the man to do?A. Say some words in Italian.B. Read Italian newspaper.C. Write in Italian.9. Where did the man spend the last day?A. In a museum.B. In a garden.C. In his hotel.听第8段材料，回答第10至12题。
山西省太原市外国语学校2018-2019学年第二学期七年级期中考试英语试卷解析版
太原市外国语学校2018 —2019 学年第二学期七年级期中考试英语试卷考试时间：2019 年 4 月23 日）第Ⅱ卷书面测试（选择题，共40 分）Ⅱ . 单选题（共10 小题，每小题 1 分，满分10 分）从每小题A、B、C 三个选项中，选出可以填入空白处的最佳选项，并将其字母标号填入题前的括号内。
21. Miss Black teaches English and we like classes very much.A. we; herB. us; herC. us; she22. She likes talking with other people and she is good t hem.A. forB. atC. with 解析：考查介词：根据句意“她喜欢与其他人交流并且她和他们相处的都很好。
”A 选项begood for 对⋯有好处；B 选项be good at 擅长；C 选项be good with 与⋯相处的很好。
根据句意答案选择C。
23. My father likes talking a walk after dinner. He says it 's good24. I am afraid of tigers because they are very .A. scaryB. beautifulC. shy25. --Helen, don't to run in the morning every day. It's good for your health.--OK, I will.解析：考察动词。
根据句意： “ Helen ，不要忘记每天早上跑步。
它有益于你的健康。
” A 选项 want 想要； B 选项learn 学习；Ｃ选项 forget 忘记。
答案选择 C 。
26. Lucy you can 't go to the party. One of you has to stay at home to look after your grandma. A. Not only; but also B. Either; or C. Both; and解析：考察连词。
2018-2019学年山西省太原市高一(上)期中英语试卷(解析版)
2018-2019学年山西省太原市高一（上）期中英语试卷一、单选题（本大题共10小题，共10.0分）1.-What a great work，Kate!-Oh，it has been years I started to paint a picture．（）A. whenB. afterC. beforeD. since2.The opening of the 2nd National Youth Games will be held in Taiyuan in 2019．（）A. systemB. ceremonyC. summaryD. committee3.This is the second time France the FIFA World Cup．（）A. winsB. wonC. has wonD. had won4.He felt quite for answering the question incorrectly in front of so many students．（）A. amazedB. relaxedC. embarrassedD. impressed5.If you don't know what it means， the dictionary．（）A. refer toB. point toC. look upD. take up6.Our bodies are strengthened by taking exercise．，our minds are developed by learning．（）A. FrequentlyB. SimilarlyC. ConvenientlyD. Hopefully7.Jack was never a（n） child at school．He enjoyed sports more than his books．（）A. energeticB. academicC. fantasticD. scientific8.The new stadium being built for the next Asian Games will be the present one．（）A. as three times big asB. three times as big asC. as big as three timesD. as big three times as9.To live a low-carbon life，some people would rather a bus than a car to work．（）A. take；driveB. take；drivingC. taking；driveD. totake； drive10.-When shall we meet at the school gate？- I can be there any time this afternoon．（）A. Sounds greatB. I'd love toC. It's up to youD. That's settled二、阅读理解（本大题共10小题，共20.0分）AMiddle School Laboratory Safety Rules Science is about discovering and exploring（探索）the natural world．Explorations can occur in the classroom，laboratory or field．As part of your science lessons，you will take part in many activities using many different materials，equipment and chemicals，which can be dangerous if not used correctly．As a result，you may be faced with biological，chemical or physical hazards．Safety is THE MOST IMPORTANT thing．The following safety rules have been developed for the protection and safety of everyone．★Behave yourself in a responsible way at all times．Risky behaviors such as throwing things and doing experiments without teachers'instructions are not allowed．★Eating，drinking，chewing gum，wearing make-up，touching contact lenses（隐形眼镜）or other unsafe activities are not allowed．★Do not enter or work in the laboratory unless an instructor is present．★Never enter areas where chemicals are kept．★Taking any chemicals or equipment away from the classroom or laboratory is not allowed．The safety rules must be followed at all times．Review these rules with your teacher andparents，then sign and get the signature（签名）of a parent．The signature shows that you understand the lab can be dangerous，and that you have read the rules and agree to follow them at all times．Signatures are needed before you can go on with any lab or science classroom activity．11.What does the underlined word"hazards"probably mean in Paragraph 1？______A. Illnesses．B. Examinations．C. Dangers．D. Experiments．12.Which of the following might be allowed in the lab？______A. Drinking soda．B. Having breakfast．C. Taking away chemicals．D. Wearing glasses．13.What should students do after reading the text？______A. Sign to agree to the rules．B. Get a teacher's signature．C. Take a test on safety rules．D. Go on with lab activities．BBorneo is the world's third largest island．I once lived on Borneo for a while with my family and it was joyful to see quite a few wild animals visit my backyard．Actually I shouldn't say that it was I who was the visitor．During the first week，I found a clutch of eggs under our bamboo trees．I was told they were the eggs of a black spitting cobra（射毒眼镜蛇）．The snake is common in the area．Poison from its bite can kill a person in one to six hours．My husband and I and our three children thought of many ways to be on the lookout，especially when we stepped into the yard．We even made up a song，which went：Cobra，cobra，are you there？Please don't fall onto my chair．One afternoon，we saw the cobra for the first time．Our friends and our family had just finished our lunch and a few of us were chatting when one of the guests saw the cobra．She was on a branch of a palm tree，less than 10 feet from where we were chatting．Everyone came out to see her，and chairs were arranged as if for a concert．The cobra lay still．Only through a pair of binoculars（双筒望远镜）could we see her breathing．She seemed to enjoy all the attention．We were surprised by her beauty．Later I realized that a cobra would naturally stay near the palm tree whose coconuts（椰子）are rich food for mice and squirrels，which are food of the cobra，and therefore the tree was a great place for a cobra．14.What made the writer happy on Borneo according to Paragraph 1？______A. Raising so many lovely animals．B. Seeing a cobra and a lot of eggs．C. Finding many wild animals in the backyard．D. Living with a number of friends under a tree．15.What's the purpose of"the song"made up by the writer's family？______A. To amuse the cobra．B. To prepare for a concert．C. To treat their friends．D. To warn themselves of danger．16.Why does a cobra like staying near a palm tree？______A. Because the tree gives her cool shade．B. Because it is a good hunting ground．C. Because it is a perfect place to hide．D. Because she likes the fruit on the tree．C（以下A（易）、B（难）两种题型任选一种，做A种题型的不做B种，做B种肠型的不做A种）Growing up in a poor neighborhood greatly reduces the chances that a child will graduatefrom high school，according to a study，And the longer a child lives in that kind of neighborhood，the more harmful the effect will be．The study by Geoffrey Wodtke and David Harding of American universities is the first todiscover that growing up in America's most disadvantaged neighborhoods has the influence on highschool graduation．Compared to growing up in normal neighborhoods，growing up in neighborhoods with high levels of poverty and unemployment reduces the chances of high school graduation from 96% to 76% for black children，The effect on white children is also harmful，but not as large，reducing their chances of graduating from 95%to 87%，While previous researches examined neighborhood effects on children at a single point intime，the new study follows 2，093 children from age 1through age 17，examining the neighborhoods in which they lived every year．For the study，the researchers described poor neighborhoods as those with high poverty，unemployment and many female-supported households，and few well-educated adults．Wodtke said，"Our results show that long-term living in disadvantaged neighborhoods has a much greater negative effect on the chances of high school graduation than earlier research．"Edward R．Murrow，a famous journalist added，"It seems that an immediate effort from the government is needed for neighborhood improvement in order to solve the problems we found in our study．Great neighborhoods may have a great effect on children's development many years or even generations later，"（以下是A种题型）17.Who did the research according to the text？______A. American government．B. American communities．C. Geoffrey Wodtke and David Harding．D. David Harding and Edward R．Murrow．18.How long did the research last？______A. For 17 years．B. For 20 years．C. For 17 months．D. For 20 weeks．19.Which of the following is hard to find in poor neighborhoods？______A. Starvation．B. Unemployment．C. Housewives．D. Well-educated adults．20.What does the text suggest the government do to solve the problem？______A. Organize more studies．B. Improve neighborhoods．C. Move away poor families．D. Set up many more banks．（以下是B种题型）（1）What does the research showfrom the first paragraph？______ （2）Who are more influenced in poor neighborhoods according to the third paragraph？______ （3）What is the difference between the newstudy and previous ones？______ （4）What effect do great neighborhoods have on children？______三、阅读七选五（本大题共5小题，共10.0分）I never really knew exactly how I felt about starting high school．While I was excited to make new friends and learn new things，I knew the work would be difficult．Knowing what Iknow now，there really isn't much to worry about! (1) Here is just a list of some of the things I found helpful throughout my first year．(2) High school is the time to try new things，and luckily your school has so much tooffer!There are so many clubs to choose from，like the environmental club，Spanish club，cooking club and so many more! (3) So if you've always wanted to try out golf or give soccer a try，now it's your time to try!Joining a club or sport is also a great way to meet people!Don't be afraid to ask questions．If you don't understand the material，ask your teacher! There are others who also don't understand and they are silently asking the same question．(4) If you are having great difficulty，you can also set up a time before or after school to meet with your teacher．Remember，they are there to help you!Doing the homework really helps you．Sure，sometimes it may seem like busy work，but it's only making you better!You need to be spending a good amount of time on your homework．(5)Knowing these things will hopefully make you feel a little more confident about yourfreshman year of high school．A．Join an interesting club or sport．B．They'll be glad someone speaks up．C．Many schools also offer a wide variety of sports．D．So，guys，I'm here to help you make it through the first year!E．Plus，if you do it，you will take responsibility off your shoulders．21. A. A B. B C. C D. D E.E22. A. A B. B C. C D. D E.E23. A. A B. B C. C D. D E.E24. A. A B. B C. C D. D E.E25. A. A B. B C. C D. D E.E四、完形填空（本大题共15小题，共15.0分）"Put the baby down，Mommy!"I said this about 500 times a day when I was only two years old．My(26) had just come home from the hospital，in a pink and blue baby blanket（毯子）．and，of course，crying．I was so little (27) I thought she was a doll．At first，she was so much (28) and the best playmate ever!Later on，I began to see that she needed a lot of undivided (29) from my mom．I got so jealous（嫉妒的）of her that I started to tell my mom to (30) her down．I thought，just like a doll，she was not that (31) I didn't think my mom was going to give her so much of the love that used to (32) me．I thought my sister Mary was just going to be there as a playmate，and had no other (33) to my mom．One day，I got the idea of getting rid of Mary altogether．I (34) my opinion by telling my mom to give her to Mr．and Mrs．Perkins across the street．I even had a Plan B，- (35) her to an orphanage（孤儿院）．I wasn't as bad as I might (36)，but I just wanted to tell my mum thatI didn't like sharing my love (37) a baby．I was in my"terrible twos"（两岁叛逆期）and wanted to be at center stage．As I grew up，I came to (38) that Mary was not going to take the love away from me，but I could give her some of mine．I wasn't unhappy when my mom was giving her all the attention．Instead，I could (39) more time with my dad．Because of her，I came to be such a "Daddy's girl"．Ever since my"terrible twos" I have been (40) with my dad．26. A. sister B. brother C. mother D. father27. A. as B. what C. how D. that28. A. trouble B. work C. fun D. pain29. A. power B. behavior C. help D. attention30. A. put B. get C. turn D. write31. A. expensive B. important C. patient D. energetic32. A. listen to B. belong to C. worry about D. talk about33. A. reaction B. topic C. relationship D. impression34. A. moved B. changed C. passed D. voiced35. A. lending B. sending C. renting D. returning36. A. be advised B. be afforded C. taste D. sound37. A. for B. like C. with D. after38. A. forget B. realize C. doubt D. remember39. A. waste B. avoid C. spend D. contain40. A. closer B. further C. deeper D. heavier五、语法填空（本大题共1小题，共10.0分）41.Welcome to our beloved home! We hope you enjoy it as much (1) we have．There is onefavor we ask of you．You don't have to do it，(2) we would appreciate it if you did．In the backyard there is (3) old orange kitty who lives there．He (4) （bear）in our backyard12 years ago．He has an (5) （injure）paw and he will not let you go near him．We feedhim (6) （two）a day and we have him for years now．We (7) （usual）feed him dry or wet cat food with some water in the corner of the backyard．We bought him a little house for the winter and (8) （rain）days，(9) is placed against the wall in the backyard．We would be thankful if you would continue to feed him．We just hate (10) （leave）him behind．Welcome to your new home!六、短文改错（本大题共5小题，共10.0分）42.You are not allowed smoke in the library．______43.The more earlier we leave，the sooner we will arrive．______44.The number of students are having their science class in the lab．______45.BRICS is short on Brazil，Russia，India，China and South Africa．______46.Their plane can't take off until the high wind stops；in other word，they have to wait．______七、书面表达（本大题共1小题，共25.0分）47.假定你叫李华，昨天收到英国好友Alex的邮件，他说下个月想来中国旅行，希望你给他推荐一个城市．请你回复邮件，内容包括：1．推荐的城市； 2．推荐理由； 3．你的建议．注意：1．词数80～100；2．可适当增加细节，以使行文连贯；3．开头和结尾已给出，不计入总词数．Dear Alex，I'm glad to know that you're coming to China for a visit．______Yours，Li Hua答案和解析1.【答案】D【解析】本题考查固定句型．It has been/is+一段时间+since+从句，意为"自从…到现在有多久了"．故选：D．--多么伟大的作品啊，凯特！--自从我开始画这幅画已经有很多年了．本题考查定语从句的用法，首先根据句意判断出先行词是什么，指人还是指物，时间还是地点，再分析从句缺少什么成分，缺主宾表，用关系代词，缺状语用关系副词．2.【答案】B【解析】本题考查名词辨析．system系统；ceremony仪式；summary总结；committee委员会．根据句意和the opening ceremony可知答案．故选：B．第二届全国青年运动会将于2019年在太原举行．本题考查名词词义辨析，考生在平时的学习中应注意积累相应的词汇和搭配，并牢记其意思．在做题时，将词义和题干相结合，从语法、句子结构尤其是句意上去判断，句意通顺，符合逻辑，即正确答案．3.【答案】C【解析】本题考查时态．这句话使用固定句型This is the second time 从句，从句用现在完成时．故选：C．这是第二次法国赢得世界杯．本题考查现在完成时，现在完成时表示过去的事情对现在造成影响，或过去的动作延续到现在，一般和recently，so far，in the past/last …搭配．4.【答案】C【解析】本题考查形容词辨析．amazed惊讶的；relaxed放松的；embarrassed尴尬的；impressed印象深刻的．根据句意和 answering the question incorrectly 可知答案．故选：C．他在这么多学生面前回答错了问题，感到很尴尬．本题考查形容词词义辨析，考生在平时的学习中应注意积累相应的词汇和搭配，并牢记其意思．在做题时，将词义和题干相结合，从语法、句子结构尤其是句意上去判断，句意通顺，符合逻辑，即正确答案．5.【答案】A【解析】本题考查动词短语辨析．refer to提及，参考，查阅；point to指向；look up查询，后面接the word；take up开始从事，占据．根据句意和the dictionary可知答案．故选：A．如果你不知道它的意思，那就查字典．本题考查动词短语辨析，考生在平时的学习中应注意积累相应的词汇和搭配，并牢记其意思．在做题时，将词义和题干相结合，从语法、句子结构尤其是句意上去判断，句意通顺，符合逻辑，即正确答案．6.【答案】B【解析】答案：B 考查副词词义辨析．Frequently频繁地，屡次地；Similarly相似地；类似地；Conveniently方便地，便利地；Hopefully抱着希望地．根据句意，B项正确．我们的身体通过锻炼得到加强．相似地，我们的大脑通过学习得到发展．考查副词词义辨析．准确地翻译句子及备选答案，然后选择最符合题意的选项．7.【答案】B【解析】本题考查形容词辨析．energetic精力充沛的；academic学术的；fantastic极好的；scientific科学的．根据句意和He enjoyed sports more than his books可知答案．故选：B．杰克在学校从来不是个学究，他比起书来更喜欢运动．本题考查形容词词义辨析，考生在平时的学习中应注意积累相应的词汇和搭配，并牢记其意思．在做题时，将词义和题干相结合，从语法、句子结构尤其是句意上去判断，句意通顺，符合逻辑，即正确答案．8.【答案】B【解析】答案B．英语中常用倍数表达法有三种形式：倍数+the+名词+of…/倍数+as+adj原级+as/倍数+adj比较级+than．根据句意：下届亚运会在建的新体育馆将是现在体育馆的"三倍大"．表示倍数的用法，倍数一般放在最前面，本题用的是倍数+as+adj原级+as的结构，故选B．句意：下届亚运会在建的新体育馆将是现在体育馆的三倍大．本题考查倍数的用法，要掌握倍数表达的几种形式．9.【答案】A【解析】答案：A．考查固定句型．句意：为了过低碳生活，现在一些人宁愿坐公共汽车也不开车去工作．would rather do than do是英语的固定句型"宁愿做某事而不做某事"．所以要填的空都是动词原形．故选：A．为了过低碳生活，现在一些人宁愿坐公共汽车也不开车去工作．对于英语中固定句型的考查，需要考生在平时的学习中积累句型，掌握句型，根据句意和句子结构的要求选择合适的句型，然后选出正确的答案．10.【答案】C【解析】本题考查交际用语．sounds great听起来很好；I'd love to我很乐意；It's up to you 由你决定；That's settled一言为定．根据I can be there any time this afternoon可知答案．故选：C．--我们什么时候在学校门口见面？--由你决定．我今天下午随时可以在那里．本题考查交际用语，交际用语体现英语的实用性和交流功能，是重要的考查形式，平时多积累一些交际用语，做题时要结合上下文做题．11.【答案】【小题1】C 【小题2】D 【小题3】A【解析】1．C．词义猜测题．根据文章第一段内容，As part of your science lessons，you will take part in many activities using many different materials，equipment and chemicals，which can be dangerous if not used correctly． As a result，you may be faced with biological，chemical or physical hazards．实验作为你科学课程的一部分，你会参加许多各种各种的活动，且活动中会使用到各种材料，仪器以及化学用品．如果你没有使用正确，则会对自己的身体带来危害，让自己处于危险之中，结合选项，故选C．2．D．细节题．根据文章内容，Eating，drinking，chewing gum，wearing make-up，touching contact lenses（隐形眼镜） or other unsafe activities are not allowed．吃东西，喝饮料，嚼口香糖以及化妆和戴隐形眼镜是不被允许的，换句话说，戴框架眼镜是可以的，结合选项，故选D．3．A．细节题．根据文章最后一段内容，Review these rules with your teacher andparents， then sign and get the signature （签名）of a parent．请仔细浏览这些规则，并在家长的陪伴下签名以表示你同意遵守这些规则，结合选项，故选A．本文章主要介绍高中实验室的一些同学们需要遵守的规则以及制度，以此保证同学们在实验过程中保证其安全．做这类题材阅读理解时要求考生对文章通读一遍，做题时结合原文和题目有针对性的找出相关语句进行仔细分析，结合选项选出正确答案．推理判断题也是要在抓住关键句子的基础上合理的分析才能得出正确答案，切忌胡乱猜测，一定要做到有理有据．14.【答案】【小题1】C 【小题2】D 【小题3】B【解析】1．C．细节理解题．根据文章第一段中的"I once lived on Borneo for a while with my family and it was joyful to see quite a few wild animals visit my backyard"可知看到很多野生动物来我家后院游览，这让作者感到很高兴，由此可知答案选C．2．D．推理判断题．根据文章第二段内容"My husband and I and our three children thought of many ways to be on the look out， especially when we stepped into the yard．We even made up a song，which went：Cobra，cobra， are you there？Please don't fall onto my chair" 可知这里表达的意思是"我和我丈夫还有三个孩子想了很多办法去守望，尤其是当我们走进院子时．我们甚至编了一首歌，歌词是这样的：眼镜蛇，眼镜蛇，你在吗？请不要掉到我的椅子上．"，由此可以推断出作者和家人唱这首歌目的是提醒他们自己会有危险，因此答案选D．3．B．推理判断题．根据最后一段内容"Later I realized that a cobra would naturally stay near the palm tree whose cocon uts（椰子） are rich food for mice and squirrels，which are food of the cobra，and therefore the tree was a great place for a cobra"可知作者后来意识到棕榈树的椰子是老鼠和松鼠的丰富食物，而松鼠是眼镜蛇的食物，因此眼镜蛇会趴在棕榈树上狩猎，由此可知答案选B．本文主要讲了作者在Borneo的一段时间的生活，期间有很多野生动物来到作者的后院游览，后来作者发现了一串黑眼镜蛇的卵，一天下午，作者家人以及朋友在聊天时在棕榈树上看到了一条眼镜蛇，它在那里一动不动地躺着，非常美丽，后来，作者意识到，一条眼镜蛇会自然地呆在棕榈树附近，棕榈树的椰子是老鼠和松鼠的丰富食物，而松鼠是眼镜蛇的食物．考查广告布告类阅读理解．这类题材注重考查学生的细节理解和推理判断能力，做细节理解题时一定要找到文章中的原句，和题干进行比较，再做出正确的选择．在做推理判断题不要以个人的主观想象代替文章的事实，要根据文章事实进行合乎逻辑的推理判断．17.【答案】【小题1】C 【小题2】A 【小题3】D 【小题4】B【解析】1．C．细节理解题．根据第二段句子：The study by Geoffrey Wodtke and David Harding of American universities 该研究由 Geoffrey Wodtke and David Harding 做的，所以答案选C．2．A．推理判断题．根据第四段句子：the new study follows 2，093children from age 1through age 17， examining the neighborhoods in which they l ived every year．这项新研究对2093名1岁至17岁的儿童进行了跟踪调查，调查了他们每年居住的社区．可见对于一个孩子的研究至少持续17年，所以选A．3．D．细节理解题．根据倒数第二段句子：the researchers described poor neighborhoods as those with high poverty，unemployment and many female-supported households，and few well-educated adults．研究人员把贫困社区描述为那些贫穷、失业、许多女性供养的家庭，以及少数受过良好教育的成年人．所以D选项是很难在这里找到，故选D．4．B．细节理解题．根据最后一段句子：It seems that an immediate effort from the government is needed for neighborhoo d improvement in order to solve the problems we found in our study．看来政府需要立即作出努力来改善邻里关系，以便解决我们在研究中发现的问题．所以选B．B型题1．Growing up in a poor neighborhood greatly reduces the chances that a child wi ll graduate from high school．细节理解题．根据第一段的句子：Growing up in a poor neighborhood greatly reduces the chances that a child will g raduatefrom high school，according to a study．根据一项研究，在贫穷的社区长大大大减少了孩子高中毕业的机会，而且孩子在那种社区生活的时间越长，这种影响就越有害．所以得到答案．2．Black children．细节理解题．根据第二段句子：growing up in neighborhoods with high levels of poverty and unemployment redu ces the chances of high school graduation from 96% to 76% for black children，在高度贫困和失业的社区长大的黑人儿童高中毕业的机会从96%降低到76%，所以大部分是黑人孩子．3．The new study is a long-term and continuous one，while previous researches were doneat a single point in time．细节理解题．根据第四段的句子：While previous researches examined neighborhood effects on children at a single point intime，the new study follows 2，093children from age 1through age 17， examining the neighborhoods in which they l ived every year．在以前的研究中，只在单个时间点研究邻里关系对儿童的影响，而新的研究则针对2093名年龄从1岁到17岁的儿童，调查他们每年居住的社区．所以得到答案．4．Great neighborhoods may have a great effect on children's development many years oreven generations later．细节理解题．根据最后一句话Great neighborhoods may have a great effect on children's development many yea rs or even generations later，"好的邻里关系可能对许多年甚至几代以后儿童的发展产生很大的影响．所以得到答案．本文主要研究了在美国最贫困的社区长大对高中毕业有影响．为解决研究中发现的问题，政府需要作出努力改善邻里关系．好的邻里关系可能对许多年甚至几代以后儿童的发展产生很大的影响．阅读理解题测试考生在阅读基础上的逻辑推理能力，要求考生根据文章所述事件的逻辑关系，对未说明的趋势或结局作出合理的推断；或根据作者所阐述的观点理论，对文章未涉及的现象、事例给以解释．考生首先要仔细阅读短文，完整了解信息，准确把握作者观点．21.【答案】【小题1】D 【小题2】A 【小题3】C 【小题4】B 【小题5】E【解析】1-5 DACBE1．D．文章衔接题．根据后文Here is just a list of some of the things I found helpful throughout my first year．可知以下是一些在我第一年里发现有帮助的事情．D项：So，guys，I'm here to help you make it through the first year!所以，伙计们，我来帮助你们度过第一年！符合文意，故选D．2．A．段落理解题．根据后文There are so many clubs to choose from，like the environmental club，Spanish club，cooking club and so many more!可知有很多俱乐部可供选择，比如环保俱乐部、西班牙俱乐部、烹饪俱乐部等等！A项：Join an interesting club or sport．参加一个有趣的俱乐部或运动．符合文意，故选A．3．C．联系下文题．根据后文So if you've always wanted to try out golf or give soccer a try，now it's your time to try!可知所以，如果你一直想尝试打高尔夫球或踢足球，现在是你尝试的时候了！C项：Many schools also offer a wide variety of sports．许多学校也提供各种各样的运动．符合文意，故选C．4．B．理解判断题．根据前文If you don't understand the material，ask your teacher! There are others who also don't understand and they are silently asking thesame question．可知如果你不理解材料，问你的老师！还有一些人也不理解，他们却保持沉默．B项：They'll be glad someone speaks up．他们很高兴有人说出来．符合文意，故选B．5．E．语境辨析题．根据前文Sure，sometimes it may seem like busy work，butit's only making you better!You need to be spending a good amount of time on your homework．可知当然，有时看起来工作很忙，但这只会让你变得更好！你需要在作业上花大量的时间．E项：Plus，if you do it，you will take responsibility off your shoulders．另外，如果你这样做的话，你将承担起责任．符合文意，故选E．本文是一篇选句填空，文章主要介绍了刚步入高中，迈入了一个新的阶段，你是否忐忑紧张？抑或恐惧困惑？来看看本文的贴心建议，从容开始高中生活吧！本文是一篇选句填空阅读，题目主要考查文章内容理解以及上下文联系．做题时学生应仔细阅读原文，把握文章主要内容，联系文章上下文内容并结合所给选项含义，从中选出正确答案，一定要做到有理有据，切忌胡乱猜测．26.【答案】【小题1】A 【小题2】D 【小题3】C 【小题4】D 【小题5】A 【小题6】B 【小题7】B 【小题8】C 【小题9】D 【小题10】B 【小题11】D 【小题12】C 【小题13】B 【小题14】C 【小题15】A【解析】1-10 ADCDA BBCDB 11-15 DCBCA1．A．名词辨析．根据下文I thought my sister Mary was just going to be there as a playmate，可知我以为我妹妹（sister）玛丽只是作为玩伴来到那里，故选A．2．D．连词辨析．本句I was so little （2）I thought she was a doll．句意是我很小以至于（so ～that）以为她是个洋娃娃．故选D．3．C．名词辨析．根据空后the best playmate ever!可知有史以来最好的玩伴！说明她非常有趣（fun），故选C．4．D．名词辨析．根据下文I wasn't unhappy when my mom was giving her all the attention．可知当我的妈妈给予她所有的关注（attention）时，我并不开心．故选D．5．A．动词辨析．根据上文"Put the baby down，Mommy可知"把宝宝放下（put down），妈妈，故选A．6．B．形容词辨析．本句I thought，just like a doll，she was not that （6）句意是我想，就像一个洋娃娃，她并不那么重要（important）．故选B．7．B．动词辨析．本句 I didn't think my mom was going to give her so much of the love that used to （7）me．句意是我不认为我母亲会给她这么多曾经属于（belong to）我的爱．故选B．8．C．名词辨析．根据上句I thought my sister Mary was just going to be there as a playmate，可知我以为我妹妹玛丽只是作为玩伴来到那里，而和母亲没有任何关系（relationship），故选C．9．D．动词辨析．根据空后 telling my mom to give her to Mr．and Mrs．Perkins across the street．可知告诉妈妈把她交给街对面的Mr．Prkins和Mrs．Perkins．这是我发表（voice）了自己的观点，故选D．10．B．动词辨析．本句I even had a Plan B，- （10）her to an orphanage（孤儿院）．句意是我甚至有一个B计划，将她送到（send to）孤儿院．故选B．11．D．动词辨析．本句I wasn't as bad as I might （11）， but I just wanted to tell my mum that I didn't lik e sharing my love （12）a baby．句意是我没有听起来（sound）那么糟糕，但我只是想告诉妈妈我不喜欢和宝宝分享我的爱．故选D．12．C．介词辨析．本句I wasn't as bad as I might （11）， but I just wanted to tell my mum that I didn't lik e sharing my love （12）a baby．句意是我没有听起来那么糟糕，但我只是想告诉妈妈我不喜欢和宝宝分享我的爱．share sth with sb和某人分享，故选C．13．B．动词辨析．本句As I grew up，I came to （13）that Mary was not going to take the love away from me， but I could give her som e of mine．句意是在我长大的时候，我开始意识到（realize）玛丽不会把爱从我身边带走，但我可以给她一些我的爱．故选B．14．C．动词辨析．本句Instead，I could （14）more time with my dad．句意是相反，我可以花（spend）更多的时间和爸爸在一起．故选C．15．A．形容词辨析．根据上句Instead，I could （14）more time with my dad可知相反，我可以花更多的时间和爸爸在一起．说明作者和父亲走得更近（closer），故选A．本文主要讲述作者一直把妹妹玛丽当作为玩伴来到家里，她虽然得到了母亲的所有的爱，可是作者和父亲走得更近了一些．完型填空题的命题趋势解题步骤：1．通读全文，理解大意．重视首句信息，跳过空格，浏览全文，从整体上感知全文，理解文章大意，这是解题的基础．2．瞻前顾后，避难就易．在理解文章大意的情况下，结合各选项的意义和用法，遵循先易后难的原则，先解决那些自己有把握的问题．对少数难题，暂时跳过，或许在上文中难以判断的题在下文中就有暗示或者明显的提示，或许一个在前面不能解答的题在填出了另一空后会令你豁然开朗．3．复读全文，解决残敌．借助已经补全的空格，对全文有了更清楚的理解，可以集中解决所遗留的少数疑难问题．。
山西省太原市部分学校2018-2019学年下学期七年级英语期中试卷分类汇编：任务型阅读
山西省太原市部分学校2018-2019学年下学期七年级英语期中试卷分类汇编任务型阅读2018-2019山西省太原市山西省实验中学初一第二学期期中英语试卷D请阅读下面短文，根据短文内容，在下面的表格中填入与文章意思最符合的单词。
1-4 题，每空一词，请将第5 题译成汉语。
How do you get to school? Different students get to school in different ways. The following students are talking about their ways to get to school.I usually go to school by bike, because my home isn't far from my school. It's only 10 minutes' ride on my bike. I can also have a good talk with my friends on the way to school. It's so relaxing. When it rains or snows heavily. my dad drives me to school in his car.---JaneI am in Grade 7. I usually go to school from Monday to Friday. My home is near the school, so every day I usually get to school on foot, and it's one of the best ways of exercise.---Tom My home is on a busy street. It is not easy to take the bus to school. Luckily, there is a subway from my home to school. I need only 5 minutes to get to school by subway.---Emily My home is about 10 kilometers from my school. First, I walk quickly for about 15 minutes to the bus stop. Then I take a bus for 30 minutes. After that, I have to walk fast for 10 minutes again. On the way to school, I am just like a horse keeping running. I want to get to school on time. I really hope to have a house near my school.---Erie【考点】题目定位，固定句型，短句翻译。
2018-2019学年上大附中高二上英语9月月考
2018-2019学年上大附中高二英语第一学期9月月考试卷I. Listening Comprehension (略)II. Grammar and Vocabulary (20分)Section ADirections: After reading the passage below, fill in the blanks to make the passage coherent and grammatically correct. For the blanks with a given word, fill in each blank with the proper form of the given word; for the other blanks, use one word that best fits each blank.(A)21.She sees many of her other cousins in the field ______(play) softball.22. The man sticks out his hand,_______ (say), “Hi, I’m Paul.”23. Thus, California is a true example of the “melting pot ”, so often _____ (associate) with the US.24. Passengers sitting in the rear of a plane have the best chance of survival in an event of a crash, an extraordinary and costly aviation(航空,飞行) experiment ever ______(conduct) has revealed.25. Having stopped laughing, I stepped back _______ (look) the situation over.26.I wrote my first poem at the age of four or five, my mother _____ (take) it down to dictation.27. The thing I had fallen over felt like a bundle of clothes, and I picked it up _____ (protect) my face from the smoke and heat.28. Just then the floor gave way under me and I crashed to the floor below with pieces of _______(burn) wood all around me, and there were fire on the wall as well.29. A woman in a night dress and a borrowed man’s coat screamed as she saw me and came ______ (run) madly.30._______(call) functional strength training, the implement helps with tasks such as lifting infants in and out of car seats or lifting garage doors.(B)You never forget your first whale. The impact it makes (31)_______ you is huge and life is never quite the same again.The world seems to be having more and more whale lovers. Since its beginnings in the mid-50s, whale-watching (32)_______(grow) quickly and now more than 13 million people join(33)_______ (organize) whale watching trips every year.The trouble is that a few hours of whale watching simple isn't enough. You go out in the morning and, (34)______ lunchtime, you are planning your next trip; by teatime, you are planning the one after that. All your holidays center around whales: the only books you read are (35)_____ about whales, you wear whale T-shirts, and (36)_____ you meet your friends you talk about whales.So what is it about these larger-than-life animals (37)_______ makes them so special ? Their size is one possible explanation. Imagine (38)______(sit) in a small boat next to a blue whale almost as long as a Boeing 737; only a lump(大块) of rock could remain(39)_______ (unwove) by an experience like that.They are great fun to watch, too. Humpback whales (座头鲸), for example, routinely leap into the air and land back in the water with a huge splash (水花). Then there is the striking-and deeply moving-level of trust that many whale show towards people. It's (40)_____ truly humbling (令人羞辱的) experience when an enormous whale comes alongside the boat and greets you like an old friend.Section B (10分)Directions: Complete the passage with the words in the box. Each word can only be used once. Note that there is one word more than you need.Junk food is everywhere. We’re eating way too much of it. Most of us know what we’re doing and yet we do it anyway.So here’s a suggestion (41)______ by two researchers at the Rand Corporation: Why not take a lesson from alcohol control policies and apply them to where food is sold and how it’s (42)______?“Many policy measures to control obesity （肥胖症）assume that people consciously and rationally choose what and how much they eat and therefore focus on providing information and more access to (43)______ foods,” note the two researchers.“In contrast,” the researchers continue, “many regulations that don’t assume people make rational choices have been successfully applied to control alcohol, a substance -- like food -- of which immoderate (44)______ leads to serious health problems.”The research references studies of people’s behavior with food and alcohol and results of alcohol restrictions, and then lists five regulations that the researchers think might be promising if applied to junk foods. Among them: Density (45)_____: licenses to sell alcohol aren't handed out (46)_____ to all comers but are allotted （分配）based on the number of places in an area that already sell alcohol. These make alcohol less easy to get and reduce the number of psychological cues to drink.Similarly, the researchers say, being presented with junk food (47)_______ our desire to eat it. So why not limit the density of food outlets, (48)______ ones that sell food rich in empty calories? And why not limit sale of food in places that aren’t (49)______food stores?Display and sales restrictions: California has a rule prohibiting alcohol displays near the cash registers in gas stations, and in most places you can’t buy alcohol at drive-through facilities. At supermarkets, food companies pay to have their wares in places where they’re easily seen. One could remove junk food to the back of the store and ban them from the shelves at checkout lines. The other measures include restricting portion sizes, taxing and prohibiting (50)_____ price deals for junk foods, and placing warning labels on the products.III. Reading Comprehension (45 分）Section ADirections: For each blank in the following passage there are four words or phrases marked A, B, C and D. Fill in each blank with the word of phrase that best fits the context.As computer technology has improved today’s online environments have become more completes and realistic. One website that has (51) _______ over six million Internet users is Second Life. Second Life is a three-dimensional（3-D）online world where people work, shop, sell and trade items, meet others, go to concerts and much more. Users, who are called “residents,” create their own characters, or “avatars,” They use their avatars to (52) _______ Second Life’s virtual world.Just like any country, Second life has its own (53) _______. using a credit card, users can buy “Linden Dollars,” the official currency of Second Life. With Linden dollars, they can (54) _______ land or even an entire island where they can earn real money from these (55) _______.When residents want to be (56) _______they can use their avatars to interact with others. There are games, shopping malls, clubs, and many kinds of stores (57) _______ to residents. With so many opportunities for interesting things to do and see, it’s easy to see why so many users devote so much time to the site.Second Life offers users a quick and easy (58) _______ from the real world. Many residents see this as one of the main (59)_____ of using the site. Spending time on Second Life allows them to escape the stress and problems of their daily lives. If a user is having a stressful day at work, she can visit a beautiful island, go skiing, or even fly to another planet during her launch break.(60)_______ escaping the stress of their daily lives, users can also escape who they are in the real world and live out their fantasies. (61) _______, residents can change their occupations, physical appearance, and even their nationalities. A doctor from the United States can be a Brazilian musician on Second Life. (62) _______, Second Life lets users live in a world without (63) _______.Although Second Life started as a way for people to escape the real world, it has become more and more (64) _______ to the real world in many ways. Now on Second Life, some countries have virtual embassies, businesses have meetings in (65) _______ rooms, and universities have places where students can view the campus and take classes. Today, Second Life allows users to experience both fantasy and reality in the same place.51.A. persuaded B. devoted C. attracted D. contacted52.A. explore B. create C. fight D. approach53.A. environment B. fortunate C. society D. economy54.A. cultivate B. purchase C. insure D. access55.A. instructions B. withdrawals C. deals D. conducts56.A. entertaining B. detective C. different D. social57.A. available B. affordable C. applicable D. adaptable58.A. suffering B. discouragement C. escape D. tolerance59.A. satisfactions B. dominations C. conveniences D. benefits60.A. In addition to B. Instead of C. In view of D. With regard to61.A. On top of that B.As a result C. For example D. Besides62.A. However B. Basically C. inevitably D. Additionally63.A. starvation B. imaginations C. connection D. Limitations64.A. exposed B. adjusted C. similar D. essential65.A. man-made B. distinctive C. functional D. virtualSection BDirections:Read the following three passages. Each passage is followed by several questions or unfinished statements. For each of them there are four choices marked A, B, C and D. Choose the one that fits best according to the information given in the passage you have just read.(A)Behind most of the bad things we do to our bodies as adults, eating more than we should is the idea we carry with us from childhood. On the one hand, we assume that we are indestructible. On the other, we think that any damage we impose on ourselves can be undone when we finally clean up our act.If the evidence for how wrong the first idea is isn't apparent when you stand naked in front of the mirror, just wait. But what if you eat right and drop all your bad habits? Is there still time to repair the damage?To a surprising degree, the answer is yes. Over the past five years, scientists have accumulated a wealth of data about what happens when aging people with bad habits decide to turn their lives around. The heartening conclusion: the body has an amazing ability to heal itself, provided the damage is not too great.The effects of some bad habits--smoking, in particular--can haunt you for decades. But the damage from other habits can be largely healed. “Any time you improve your behavior and make lifestyle changes, they make a difference from that point on”, says Dr. Jeffrey Koplan. “Maybe not right away. It's like slamming on the brakes. You do need a certain distance”.But the distance can be remarkably short. Consider the recent announcements from the front lines of medical research:--A study concluded that women who consume as little as two servings of fish a week cut their risk of suffering a stroke to half that of women who eat less than one serving of fish a month.--The day you quit smoking, the carbon monoxide levels in your body drop dramatically. Within weeks, your blood becomes less sticky and your risk of dying from a heart attack starts to decline。
山西省太原市2018-2019学年高二下学期阶段性测评(期中)数学理试题Word版含解析
山西省太原市2018-2019学年高二下学期阶段性测评（期中）数学理试题第Ⅰ卷（共60分）一、选择题：本大题共12个小题,每小题5分,共60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. 复平面内，点表示的复数为（）A. B. C. D.【答案】D【解析】分析:一般利用复平面内复数的几何意义(复数x+yi（x,y∈R）在复平面内与点（x,y）一一对应)解答即可.详解：由复数的几何意义得点(0,-1)表示的复数为0+(-1)×i=-i.故选D.点睛：本题涉及到的知识点是复数的几何意义，复数x+yi（x,y∈R）在复平面内与点（x,y）一一对应.2. 已知函数，则（）A. B. C. D.【答案】A【解析】分析：一般先求导，再求.详解：因为所以，所以=cos0-1=1-1=0,故选A.点睛：注意基本初等函数的导数，，有些同学容易记错.3. 下列结论正确的是（）A. 归纳推理是由一般到个别的推理B. 演绎推理是由特殊到一般的推理C. 类比推理是由特殊到特殊的推理D. 合情推理是演绎推理【答案】C【解析】分析：直接利用归纳推理、演绎推理、类比推理和合情推理的定义分析判断.详解：对于A选项，由于归纳推理是从个别到一般的推理，所以A不正确；对于B选项，由于演绎推理是从一般到特殊的推理，所以B不正确；对于C选项，由于类比推理是从特殊到特殊的推理，所以C正确；对于D选项，由于合情推理是归纳推理和类比推理，所以D不正确.点睛：对于归纳推理、演绎推理、类比推理和合情推理的定义要理解掌握，不要死记硬背，要理解它们之间的区别和联系.4. 已知是复平面内的平行四边形，，，三点对应的复数分别是，，，则点对应的复数为（）A. B. C. D.【答案】D详解：由题得A(-2，1),B(1，-1),C(2，2),设D(x,y)，则因为，所以，解之得x=-1,y=4.所以点D的坐标为（-1，4），所以点D对应的复数为-1+4i,故选D.点睛：本题方法比较多，但是根据求点D的坐标，是比较简单高效的一种方法，大家解题时，注意简洁高效.5. 已知推理：“因为所有的金属都能够导电，而铜能导电，所以铜是金属”.则下列结论正确的是（）A. 此推理大前提错误B. 此推理小前提错误C. 此推理的推理形式错误D. 此推理无错误【答案】C【解析】分析：一般利用三段论来分析解答. 如果三段论的大前提是范围对象A具有某性质，小前提应该是B元素属于范围对象A，结论是B具有某性质,这个推理的形式才是正确的.详解：已知推理的大前提是：因为所有的金属都能够导电，所以推理的小前提应该是说A材料是金属，结论是A能导电. 但是推理的小前提是说铜能导电，违背了三段论的推理要求，所以此推理的推理形式错误，故选C.点睛：三段论看似简单，但是遇到真正的问题，有些同学又比较含糊. 如果三段论的大前提是范围对象A具有某性质，小前提应该是B元素属于范围对象A，结论是B具有某性质,这个推理的形式才是正确的.6. 用反证法证明“三角形的三个内角中至少有一个不大于”时的假设为（）A. 三个内角中至多有一个不大于B. 三个内角中至少有两个不大于C. 三个内角都不大于D. 三个内角都大于【答案】D【解析】分析：一般利用命题的否定来解答，三角形的三个内角中至少有一个不大于的否定应该是三个内角都大于.详解：由于“三角形的三个内角中至少有一个不大于”的否定是“三个内角都大于60°”，故选D.点睛：利用反证法证明时，首先要假设原命题不成立，原命题的反面成立，所以这里涉及到命题的否定，命题的否定就是只否定命题的结论，命题的否命题是条件和结论都同时否定，这两个大家要区分开来.7. 复平面内，若与复数对应的点在第四象限，则实数的取值范围是（）A. B. C. D.【答案】B【解析】分析：复数对应的点在第四象限，就是说复数的实部大于零，虚部小于零，得到关于m的不等式组，解不等式组即得m的取值范围.详解：由题得，解之得0＜m＜1，故选B.点睛：本题解答主要是根据复数的几何意义来解答的，复数x+yi（x,y∈R）与复平面内的点(x,y)一一对应.8. 观察下列各式：，，，……，则的末两位数字为（）A. B. C. D.【答案】D【解析】分析：由题意依次求出7的乘方对应的值，归纳出末两位数出现的规律，再确定72018的末两位数．详解：根据题意得，72=49，73=343，74=2401，75=16807，76=117649，77=823543，78=5764801，79=40353607…，发现：74k﹣2的末两位数字是49，74k﹣1的末两位数字是43，74k的末两位数字是01，74k+1的末两位数字是07，（k=1、2、3、4、…），∵2018=504×4+2，∴72018的末两位数字为49，故选D.点睛：要解答本题，一定要多列举找到规律，不能只写几个就下结论,所以本题列举了8个式子，这样总结的结论才更准确.9. 函数的单调递减区间是A. B. 和 C. D.【答案】B【解析】分析：一般先求导得再解不等式得到它的解集，最后和定义域求交集，即可得到原函数的单调减区间.详解：由题得，令，所以x<1,因为x≠0，所以x＜1，且x≠0，所以函数的单调减区间为和，故选B.点睛：本题是一个易错题,容易漏掉函数的定义域,得到函数的减区间为,主要是因为没有考虑定义域{x|x≠0}.对于函数的任何问题，必须遵循定义域优先的原则，否则会出错.10. 已知函数在处的切线平行于轴，则的极大值与极小值的差为（）A. B. C. D.【答案】C【解析】分析：先求导，再求出，再解方程，求出a的值，再求函数的极大值和极小值，最后求极大值和极小值的差.详解：由题得，所以故a=0,所以，所以函数f(x)在（1，+∞）和（-∞，-1）上是增函数，在（-1,1）上是减函数.∴，∴的极大值与极小值的差为2+b+2-b=4,故选C.点睛：求函数的极值的一般步骤是：求定义域求导解方程列表下结论.11. 在直角坐标平面内，由曲线，，和轴所围成的封闭图形的面积为（）A. B. C. D.【答案】A【解析】分析：先求出直线y=x和曲线xy=1的交点的横坐标，再利用定积分求出曲线，，和轴所围成的封闭图形的面积.详解：联立xy=1和y=x得x=1,(x=-1舍).由题得由曲线，，和轴所围成的封闭图形的面积为，故选A.点睛：求曲线围成的不规则的图形的面积，一般利用定积分来求解.12. 已知函数在上单调递增，则实数的取值范围为（）A. B. C. D.【答案】D【解析】分析：求出函数f（x）的导数，问题转化为a≥在恒成立，令g（x）=，x∈，根据函数的单调性求出函数g(x)的最大值，即得实数a的范围．详解：：f（x）=（2a﹣1）x﹣cos2x﹣a（sinx+cosx），=2a﹣1+sin2x﹣a（cosx﹣sinx），若f（x）在递增，则≥0在恒成立，即a≥在恒成立，令g（x）=，x∈，则=，令＞0，即sinx＞cosx，解得：x＞，令＜0，即sinx＜cosx，解得：x＜，故g（x）在[0，）递减，在（，]递增，故g（x）max=g（0）或g（），而g（0）=1，g（）=，故a≥1，故选D．点睛：本题解答用到了分离参数的方法，把≥0在恒成立通过分离参数转化为a≥在恒成立,再求函数g（x）=，x∈的最大值.处理参数问题常用的有分类讨论和分离参数方法，如果分离参数不便，就利用分类讨论.大家要注意这两种方法的区别和联系.第Ⅱ卷（共90分）二、填空题（每题5分，满分20分，将答案填在答题纸上）13. 已知复数满足，则复数的共轭复数为__________．【答案】【解析】分析:先由题得到，再利用复数的除法化简得到z,最后求z的共轭复数.详解:由题得.所以z的共轭复数为2-i.故填2-i.点睛：本题主要考查复数的除法运算和共轭复数的概念，解题时，不要求出z就直接填进去了，主要还要求z的共轭复数.14. 若，则实数__________．【答案】【解析】分析：直接利用微积分基本原理化简已知，得到m的方程，求出m的值.详解：由题得，所以，∴m=2.故填2.点睛：本题主要考查微积分基本原理，关键是找到的原函数.15. “扫雷”游戏，要求游戏者找出所有的雷，游戏规则是：一个方块下面有一个雷或没有雷，如果无雷，掀开方块下面就会标有数字（如果数学是，常省略不标），此数字表明它周围的方块中雷的个数（至多八个），如图甲中的“”表示它的周围八个方块中有且仅有个雷.图乙是小明玩的游戏中的局部，根据图乙中信息，在这七个方块中，有雷的方块为__________．【答案】ADFG【解析】分析：解答时，先确定F和G有雷，再确定C,D中必有一个有雷，这时再利用假设法否定C有雷D 无雷，后面再确定A和B是否有雷.详解：第4行第7个数字2，所以F、G方块有雷. 第4行第6个数字4，说明E方块没有雷.由于第4行第4个数字3，说明C、D中必有一个有雷. 假设C有雷，D无雷. 由于第6行第7个数字2，所以第7行6、7、8、9都没有雷，第5个有雷，但是第6行第4 个数字2，这样第6行第4个数字周围就有3个雷，与题目矛盾，故C无雷，D有雷.由于第4行第3个数字1，所以B五雷，由于第4行第2个数字1，所以A有雷. 故有雷的是A、D、F、G.故填A、D、F、G.点睛：本题主要考查推理论证，在推理时主要要从简单的入手，再讨论复杂的，如果不能确定可以进行假设分析，找到矛盾和答案.16. 设函数，观察下列各式：，，，，…，，……，根据以上规律，若，则整数的最大值为__________．【答案】【解析】分析：先归纳得到f n（x）=f（f n﹣1（x））=，再求出f n（）=，最后解不等式，得到n的最大值.详解：由题意，所给的函数式的分子不变都是x，而分母是由两部分的和组成，第一部分的系数分别是1，3，7，15…2n﹣1，第二部分的数分别是2，4，8，16…2n.∴f n（x）=f（f n﹣1（x））=，∴f n（）=．∴，∴，∴整数的最大值为9.故填9.点睛：本题主要考查归纳推理，所以归纳出f n（x）=f（f n﹣1（x））=是关键.三、解答题（本大题共6小题，共70分.解答应写出文字说明、证明过程或演算步骤.）17. 已知复数，，，是实数，为虚数单位.（1）若，求复数，；（2）若，求复数，.【答案】(1)，；(2)，.【解析】分析：（1）把代入，得到关于a、b的方程，根据复数相等的概念得到关于a、b的方程组，解方程组即可求出复数、.(2) 把代入，得到关于a、b的方程，根据复数相等的概念得到关于a、b的方程组，解方程组即可求出复数，.详解：（1）∵，∴，∴∴，；（2）∵，∴∴，∴，.点睛：本题主要考查复数的运算和复数相等的概念，属于基础题.18. 已知函数.（1）求的单调区间；（2）当时，求的值域.【答案】(1)单调增区间为和，单调减区间为；(2).【解析】分析：（1）先求导，再利用导数求函数的单调区间. (2)先写出函数在的单调区间，再根据函数的单调区间写出函数f(x)的值域.详解：（1）由题意得，，令，则或；令，则；∴的单调增区间为和，单调减区间为；（2）由（1）得在和上单调递增，在上单调递减，∵，，，，∴的值域为.点睛：本题主要考查利用导数求函数的单调区间和函数的值域，属于基础题.19. 已知点，是椭圆的左右顶点，是椭圆上异与，的点，则直线与的斜率满足.（1）类比椭圆的上述结论，写出双曲线的相应结论，并证明；（2）请利用（1）的结论解决以下问题：已知点，是双曲线的左右顶点，是该双曲线上异与，的点，若直线的斜率为，求直线的方程.【答案】(1)答案见解析；(2).【解析】分析：（1）类比椭圆的上述结论，写出双曲线的相应结论, 再证明. （2）先利用前面的结论得到再写出直线的点斜式方程化简即得直线的方程.详解：（1）已知点，是双曲线的左右顶点，双曲线上异与，的点，则直线与的斜率满足；证明：由题意得，，∴∵是双曲线上的点，∴，∴，∴直线与的斜率满足.（2）由（1）得，∵，∴，∵是双曲线的右顶点，∴，∴直线的方程为.点睛：本题主要考查类比推理的能力和圆锥曲线的基本运算，属于基础题.说明：请考生在（A）,（B）两个小题中任选一题作答.20. 已知数列满足，.（1）计算，，，根据计算结果，猜想的表达式；（2）用数学归纳法证明你猜想的结论.【答案】(1)答案见解析；(2)证明见解析.【解析】分析：（1）计算，，，根据计算结果，猜想. （2）用数学归纳法证明猜想的结论.详解：（1）当时，；当时，；当时，，由此猜想；（2）下面用数学归纳法证明，①当时，显然成立，②假设当时猜想成立，即，由题意得，∴当时猜想也成立；由①和②，可知猜想成立，即.点睛：在利用数学归纳法证明数学问题时，一定要注意利用前面的时的假设，否则就是伪数学归纳法，是错误的.21. 已知数列的前项和为，且满足，.（1）计算，，，根据计算结果，猜想的表达式；（2）用数学归纳法证明你猜想的结论.【答案】(1)答案见解析；(2)证明见解析.【解析】分析：（1）计算，，，根据计算结果，猜想. （2）用数学归纳法证明猜想的结论.详解：（1）当时，，∴，当时，，∴，当时，，∴，由此猜想，（2）下面用数学归纳法证明，①当时，显然成立，②假设当时猜想成立，即，由题意得，∴，∴，∴当时猜想也成立，由①和②，可知猜想成立，即.说明：请考生在（A）,（B）两个小题中任选一题作答.22. 已知函数.（1）讨论函数的单调性；（2）当时，证明：在上至多有一个零点.【答案】(1)答案见解析；(2)证明见解析.【解析】分析：（1）先求导，再对a分类讨论，求函数的单调性.(2)对a分类讨论，根据函数的图像分析每一种情况函数在上零点个数，即得在上至多有一个零点.详解：（1）由题意得①当时，令，则；令，则，∴在上单调递减，在上单调递增；②当时，令，则或，（ⅰ）当时，令，则或；令，则，∴在和上单调递增，在上单调递减；（ⅱ）当时，，∴在上单调递增；（ⅲ）当时，令，则或；令，则，∴在和上单调递增，在上单调递减；（2）由（1）得当时，在和上单调递增，在上单调递减，∴在处取得极大值，∵，∴此时在上至多有一个零点；当时，在上单调递增，∴此时在上至多有一个零点；当时，在和上单调递增，在上单调递减；∴在处取得极大值，∵，∴此时在上至多有一个零点；综上所述，当时，在上至多有一个零点.点睛：对于函数的零点问题，一般利用图像法分析解答.一般先求导，再求出函数的单调区间、最值、极值等，再画图分析函数的零点情况.23. 已知函数.（1）讨论函数的单调性；（2）当函数有两个零点，求实数的取值范围.【答案】(1)答案见解析；(2).【解析】分析：（1）先求导，再对a分类讨论，求函数的单调区间. (2)对a分类讨论，作出函数的图像，分析出函数f(x)有两个零点所满足的条件，从而求出a的取值范围.详解:（1）由题意得①当时，令，则；令，则，∴在上单调递减，在上单调递增；②当时，令，则或，（ⅰ）当时，令，则或；令，则，∴在和上单调递增，在上单调递减；（ⅱ）当时，，∴在上单调递增；（ⅲ）当时，令，则或；令，则，∴在和上单调递增，在上单调递减；（2）由（1）得当时，在和上单调递增，在上单调递减，∴在处取得极大值，∵，∴此时不符合题意；当时，在上单调递增，∴此时不符合题意；当时，在和上单调递增，在上单调递减；∴的处取得极大值，∵，∴此时不符合题意；当时，在上单调递减，在上单调递增，∵，，∴在上有一个零点，（ⅰ）当时，令，当时，∵，∴在上有一个零点，∴此时符合题意；（ⅱ）当时，当时，，∴在上没有零点，此时不符合题意；综上所述，实数的取值范围为.点睛：对于含参的问题，注意分类讨论思想的运用. 本题的导数，由于无法直接写出函数的单调区间，所以必须要分类讨论.分类讨论时，要注意分类的起因、分类的标准、分类的过程和分类的结论.。
山西省2018-2019学年第二学期八年级阶段一质量评估试题·英语(人教版)·试题及答案
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姓名 ______________________ 准考证号 ______________________
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22. It seems that we are in a very difficult situation. __________, we won’t give up hope.
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23. My favorite singer is going to give a concert to __________ money for the deaf.
A. But it was good. B. But it is terrible! C. How can I help? D. Why do you ask? E. Why don’t you help them? F. Are you going there right now? G. There are a lot of homeless people in this city.
started to do scientific research（研究）.
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29. —Whom do you think Bob ___________, his father or his mother?
山西省太原市部分学校2018-2019学年下学期七年级英语期中试卷分类汇编：词汇运用
山西省太原市部分学校2018-2019学年下学期七年级英语期中试卷分类汇编词汇运用2018-2019山西省太原市山西省实验中学初一第二学期期中英语试卷九、词汇运用（共10 小题，每小题 1 分，满分10 分）根据语篇内容，用方框中所给词的正确形式填空，使短文意思通顺、正确、连贯，并将答案填写到答题卡相应的位置上,方框中有两个词为多余项。
Mother’s D ay is celebrated (庆祝) in the USA. It is also a festival in some other 71. _______. It's on the second Sunday in May. It’s the time to say thanks to 72._________. Mother can 73._______ flowers and cards on that day. On the cards, children will write “Thanks, mum. ”, “To the best mother in the world ”, “Best wishes to my 74.________ mother ” and so on.Do you know where idea for the festival 75. ________from? We should thank Miss Anna. She got the idea of having such a day. 76.________ May 8, 1905, her mother died in West Virginia.She loved her mother, She wrote letters to some important people. In her letters. She asked 77. _________to make a day for all mothers. Mother’s Day was made on the 78. _________ Sunday in May by the USA in 1913.On Mother's Day, children give cards or flowers to their mothers and try to do something nice for their mothers 79. ________ them happy.Time runs 80. __________. Now, more and more people like to celebrate it. Are you ready to say thanks to your mom on Mother’s Day this year?【考点】词意、词性、时态、固定搭配【难度星级】★★71【答案】countries【解析】根据句意母亲节在其他国家也是一个节日，所填“国家”应为复数形式。
山西省太原市2018-2019学年高二上学期期中考试数学试卷(含精品解析)
2018-2019学年山西省太原市高二（上）期中数学试卷一、选择题（本大题共12小题，共36.0分）1. 在空间直角坐标系Oxyz 中，点A （1，2，3）关于yOz 平面对称的点的坐标为（ ）A. (−1,2，3)B. (1,−2,3)C. (1,2，−3)D. (−1,−2,−3) 2. 由下列主体建筑物抽象得出的空间几何体中为旋转体的是（ ）A.B.C.D.3. 已知A （0，1），B （0，-1），则直线AB 的倾斜角为（ ）A. 0∘B. 90∘C. 180∘D. 不存在 4. 下列四面体中，直线EF 与MN 可能平行的是（ ）A.B.C.D.5. 已知点A （2，3）在直线11：2x +ay -1=0上，若l 2∥l 1，则直线l 2的斜率为（ ）A. 2B. −2C. 12D. −126. 设a ，b ，c 为三条不同的直线，α，β，γ为三个不同的平面，则下列纳论成立的是（ ）A. 若a ⊥b 且b ⊥c ，则a//cB. 若α⊥β且β⊥γ，则α//γC. 若a ⊥α且a//b ，则b ⊥αD. 若α⊥β且a//α，则a ⊥β7. 已知圆C 的一条直径的端点坐标分别是（4，1）和（-2，3），则圆C 的方程是（ ）A. (x +1)2+(y +2)2=10B. (x −1)2+(y −2)2=40C. (x −1)2+(y −2)2=10D. (x +1)2+(y +2)2=408. 一个长方体由同一顶点出发的三条棱的长度分别为2，2，3，则其外接球的表面积为（ ）A. 68πB. 17πC. 28πD. 7π9. 已知x ，y 满足不等式组{x −y +1≥02x −y −1≤0x +y +1≥0，则z =5x +2y 的最大值为（ ）A. 12B. 16C. 18D. 2010. 直线ax +y +a =0与直线x +ay +a =0在同一坐标系中的图象可能是（ ）A. B.C. D.11.如图，在正方体ABCD-A1B1C1D1中，A1H⊥平面AB1D1，垂足为H，给出下面结论：①直线A1H与该正方体各棱所成角相等；②直线A1H与该正方体各面所成角相等；③过直线A1H的平面截该正方体所得截面为平行四边形；④垂直于直线A1H的平面截该正方体，所得截面可能为五边形，其中正确结论的序号为（）A. ①③B. ②④C. ①②④D. ①②③12.一条光线从点P（-2，4）射出，经直线x-y+2=0反射后与圆x2+y2+4x+3=0相切，则反射光线所在直线的方程是（）A. x+√15y−2=0B. √15x+y−2=0C. x−√15y−2=0 D. √15x−y−2=0二、填空题（本大题共4小题，共16.0分）13.已知点A（3，-3），B（0，2），则线段AB的中点坐标是______．14.已知直线l1：x-2y=1，l2：mx+（3-m）y+1．若l1⊥l2，则实数m=______．15.某三棱锥的三视图如图所示，图中三个三角形均为直角三角形，则x2+y2=______．16.△ABC中，∠C=90°，∠A=60°，AB=2，M为AB中点，将△BMC沿CM折叠，当平面BMC⊥平面AMC时，A，B两点之间的距离为______．三、解答题（本大题共7小题，共68.0分）17.已知△ABC的三个顶点的坐标是A（1，1），B（2，3），C（3，-2）．（1）求BC边所在直线的方程；（2）求△ABC的面积．18.已知正方体ABCD-A1B1C1D1．（1）求证：AD1∥平面C1BD；（2）求证：AD1⊥平面A1DC．19.已知圆C的方程为x2+y2-4tx-2ty+5t2-4=0（t＞0）．（1）设O为坐标原点求直线OC的方程；（2）设直线y=x+1与圆C交于A，B两点，若|AB|=2√2，求实数t的值．20.如图，在四棱锥P-ABCD中，PA⊥平面ABCD，底面ABCD为矩形，且AD=2AB=√3PA=2，AE⊥PD，垂足为E．（1）求PD与平面ABCD所成角的大小；（2）求三棱锥P-ABE的休积．21.如图，在四棱锥P-ABCD中，PA⊥平面ABCD，AB=BC，AD=DC，E为棱PC上不与点C重合的点．（1）求证：平面BED⊥平而PAC；（2）若PA=AC=2，BD=4√3，且二面角E-BD-C的平面角为45°，求三棱锥P-BED3的体积．22.已知圆C1：（x-1）2+（y+5）2=50，圆C2：（x+1）2+（y+1）2=10．（1）证明圆C1与圆C2相交；（2）若圆C3经过圆C1与圆C2的交点以及坐标原点，求圆C3的方程．23.已知圆C1：x2+y2+2x-4y+1=0，圆C2：x2+y2-4x-5=0．（1）试判断圆C1与圆C2是否相交，若相交，求两圆公共弦所在直线的方程，若不相交，说明理由；（2）若直线y=kx+1与圆C1交于A，B两点，且OA⊥OB，求实数k的值．答案和解析1.【答案】A【解析】解：在空间直角坐标系Oxyz中，点A（1，2，3）关于yOz平面对称的点的坐标为（-1，2，3）．故选：A．根据关于yOz平面对称，x值变为相反数，其它不变这一结论直接写结论即可．本题考查空间向量的坐标的概念，考查空间点的对称点的坐标的求法，属于基础题．2.【答案】B【解析】解：在A中，主体建筑物抽象得出的空间几何体不为旋转体，故A错误；在B中，主体建筑物抽象得出的空间几何体为旋转体，故B正确；在C中，主体建筑物抽象得出的空间几何体不为旋转体，故C错误；在D中，主体建筑物抽象得出的空间几何体不为旋转体，故D错误．故选：B．利用旋转体的定义、性质直接求解．本题考查旋转体的判断，考查旋转体的定义及性质等基础知识，考查运算求解能力，是基础题．3.【答案】B【解析】解：∵直线经过A（0，1），B（0，-1）两点，∴直线AB的斜率不存在，∴直线AB的倾斜角90°．故选：B．由直线经过A（0，1），B（0，-1）两点，直线AB的斜率不存在，从而能求出直线AB的倾斜角．本题考查直线的倾斜角的求法，是基础题．解题时要认真审题，仔细解答，注意合理地进行等价转化．4.【答案】C【解析】解：根据过平面内一点和平面外一点的直线，与平面内不过该点的直线异面，可判定A，B中EF，MN异面；D中，若EF∥MN，则过EF的平面与底面相交，EF就跟交线平行，则过点N有两条直线与EF 平行，不可能；故选：C．利用异面直线判定定理可确定A，B错误；利用线面平行的性质定理和过直线外一点有且仅有一条直线与已知直线平行，可判定D错误．此题考查了异面直线的判定方法，线面平行的性质等，难度不大．5.【答案】A【解析】解：∵点A（2，3）在直线11：2x+ay-1=0上，∴2×2+3a-1=0，解得a=-1，∴直线l1：2x-y-1=0，∵l2∥l1，∴直线l2的斜率k=2．故选：A．由点A（2，3）在直线11：2x+ay-1=0上，求出直线l1：2x-y-1=0，再由l2∥l1，能示出直线l2的斜率．本题考查直线的斜率的求法，考查直线与直线平行的性质等基础知识，考查运算求解能力，是基础题．6.【答案】C【解析】解：由a，b，c为三条不同的直线，α，β，γ为三个不同的平面，知：在A中，若a⊥b且b⊥c，则a与c相交、平行或异面，故A错误；在B中，若α⊥β且β⊥γ，则α与γ相交或平行，故B错误；在C中，若a⊥α且a∥b，则由线面垂直的判定定理得b⊥α，故C正确；在D中，若α⊥β且a∥α，则a与β相交、平行或a⊂β，故D错误．故选：C．在A中，a与c相交、平行或异面；在B中，α与γ相交或平行；在C中，由线面垂直的判定定理得b⊥α；在D中，a与β相交、平行或a⊂β．本题考查命题真假的判断，考查空间中线线、线面、面面间的位置关系等基础知识，考查运算求解能力，是中档题．7.【答案】C【解析】解：圆C的一条直径的端点坐标分别是（4，1）和（-2，3），故利用中点公式求得圆心为（1，2），半径为=，故圆的方程为（x-1）2+（y-2）2=10，故选：C．利用中点公式求得圆心坐标，再求出半径，可得圆C的方程．本题主要考查求圆的方程的方法，关键是求出圆心和半径，属于基础题．8.【答案】B【解析】解：长方体的外接球直径即为长方体的体对角线，由题意，体对角线长为：=，外接球的半径R=，=17π，故选：B．利用长方体的外接圆直径为体对角线，容易得解．此题考查了长方体的外接球面积，属容易题．9.【答案】B【解析】解：作出x，y满足不等式组对应的平面区域，由z=5x+2y，得y=x+z，平移直线y=x+z，由图象可知当直线y=x+z，经过点B时，直线y=x+z的截距最大，此时z最大．由，得A（2，3），此时z的最大值为z=5×2+2×3=16，故选：B．作出不等式对应的平面区域，利用线性规划的知识，通过平移即可求z的最大值．本题主要考查线性规划的应用，利用数形结合是解决线性规划题目的常用方法．10.【答案】D【解析】解：直线ax+y+a=0与直线x+ay+a=0不可能平行，故B错误；当a＞0时，直线ax+y+a=0是减函数，直线x+ay+a=0是减函数，故A和C都错误；当a＜0时，直线ax+y+a=0是增函数，与y轴交于正半轴，直线x+ay+a=0是增函数，与y轴交于负半轴，故A，B，C和D都错误．综上，正确答案是a＞0，直线ax+y+a=0与直线x+ay+a=0在同一坐标系中的图象可能是D．故选：D．根据a的符号，分类讨论，利用数形结合思想和排除法能求出结果．本题考查函数图象的判断，考查直线的图象与性质等基础知识，考查运算求解能力，是基础题．11.【答案】D【解析】解：如图，在正方体ABCD-A1B1C1D1中，A1H⊥平面AB1D1，垂足为H，连接A1C，可得A1C⊥AB1，A1C⊥AD1，即有A1C⊥平面AB1D1，直线A1H与直线A1C重合，直线A1H与该正方体各棱所成角相等，均为arctan，故①正确；直线A1H与该正方体各面所成角相等，均为arctan，故②正确；过直线A1H的平面截该正方体所得截面为A1ACC1为平行四边形，故③正确；垂直于直线A1H的平面与平面AB1D1平行，截该正方体，所得截面为三角形或六边形，不可能为五边形．故④错误．故选：D．由A1C⊥平面AB1D1，直线A1H与直线A1C重合，结合线线角和线面角的定义，可判断①②；由四边形A1ACC1为矩形，可判断③；由垂直于直线A1H的平面与平面AB1D1平行，可判断④．本题考查线线角和线面角的求法，以及正方体的截面的形状，考查数形结合思想和空间想象能力，属于中档题．12.【答案】A【解析】解：点P（-2，4）关于直线x-y+2=0的对称点为Q（2，0），设反射光线所在直线方程为：y=k（x-2），即kx-y-2k=0，依题意得：=1，解得：k=±，依题意舍去k=故反射线所在直线方程为：x+y-2=0，故选：A．根据光学性质，点P（-2，4）关于直线x-y+2=0对称的点在反射线所在直线上，设出所求直线方程，然后用点到直线的距离等于半径，求出斜率，舍去正值即可．本题考查了直线与圆的位置关系．属中档题．13.【答案】（32，−12）【解析】解：设A、B的中点为P（x0，y0），由A（3，-3）、B（0，2），再由中点坐标公式得：，．∴线段AB的中点坐标为（）．故答案为：（）．直接利用中点坐标公式求解．本题考查了中点坐标公式，是基础题．14.【答案】2【解析】解：∵直线l1：x-2y=1，l2：mx+（3-m）y+1．l1⊥l2，∴1×m+-2×（3-m）=0，解得m=2．故答案为：2．利用直线与直线垂直的性质直接求解．本题考查实数值的求法，考查直线与直线垂直的性质等基础知识，考查运算求解能力，是基础题．15.【答案】34【解析】解：由三视图还原原几何体如图，该几何体为三棱锥，侧棱PA⊥底面ABC，底面三角形ABC是以∠ABC为直角的直角三角形．则x2+y2=x2+PA2+AD2=（PA2+AB2）+AD2=52+32=34．故答案为：34．由三视图还原原几何体，该几何体为三棱锥，侧棱PA⊥底面ABC，底面三角形ABC是以∠ABC为直角的直角三角形，然后利用勾股定理转化求解．本题考查由三视图求面积、体积，关键是由三视图还原原几何体，是中档题．16.【答案】√102【解析】解：取MC中点O，连结AO，BO，∵△ABC中，∠C=90°，∠A=60°，AB=2，M为AB中点，∴AC=BM=AM=CM=1，∴AO==，BO===，AO⊥MC，将△BMC沿CM折叠，当平面BMC⊥平面AMC时，AO⊥平面BMC，∴AO⊥BO，∴A，B两点之间的距离|AB|===．故答案为：．取MC中点O，连结AO，BO，推导出AC=BM=AM=CM=1，AO==，BO==，AO⊥MC，AO⊥平面BMC，AO⊥BO，由此能求出A，B两点之间的距离．本题考查两点间距离的求法，考查空间中线线、线面、面面间的位置关系等基础知识，考查运算求解能力，是中档题．17.【答案】解：（1）∵B（2，3），C（3，-2），∴边BC所在的直线方程为y−(−2)3−(−2)=x−32−3，即5x+y-13=0；（2）设B到AC的距离为d，则S△ABC=12|AC|⋅d，|AC|=√(3−1)2+(−2−1)2=√13，AC方程为：y−(−2)1−(−2)=x−31−3即：3x+2y-5=0∴d=|3×2+2×3−5|√32+22=7√13．∴S△ABC=12×√13×7√13=72．【解析】（1）直接由两点式直线方程公式求解即可；（2）求出B到AC的距离为d，再求AC的距离，然后利用面积公式求解即可．本题考查两点式直线方程公式，考查点到直线的距离公式的应用，考查计算能力，是中档题．18.【答案】证明：（1）∵正方体ABCD-A1B1C1D1．∴C1D1∥A1B1，C1D1=A1B1，又AB∥A1B1，AB=A1B1，∴C1D1∥AB，C1D1=AB，∴四边形C1D1AB是平行四边形，∴AD1∥C1B，∵C1B⊂平面C1BD，AD1⊄平面C1BD，∴AD1∥平面C1BD．（2）∵正方体ABCD-A1B1C1D1．∴A1D⊥AD1，CD⊥平面A1ADD1，∵AD1⊂平面A1ADD1，∴CD⊥AD1，又A1D∩CD=D，∴AD1⊥平面A1DC．【解析】（1）推导出四边形C1D1AB是平行四边形，从而AD1∥C1B，由此能证明AD1∥平面C1BD．（2）推导出A1D⊥AD1，CD⊥平面A1ADD1，CD⊥AD1，由此能证明AD1⊥平面A1DC．本题考查线面平行、线面垂直的证明，考查空间中线线、线面、面面间的位置关系等基础知识，考查运算求解能力，是中档题．19.【答案】解：（1）圆C的方程为x2+y2-4tx-2ty+5t2-4=0（t＞0），即（x-2t）2+（y-t）2=4，故圆心C（2t，t），故直线OC的方程为y=12x．（2）圆心C（2t，t）到直线y=x+1的距离为d=√2=√2，根据弦心距、弦长、半径之间的关系，可得(√2)2+(√2)2=4，∴t=1，或t=-3 （舍去），∴t=1．【解析】（1）把圆C的方程化为标准形式，可得C的坐标，从而求得直线OC的方程．（2）求出弦心距，再根据弦心距、弦长、半径之间的关系，求得t的值．本题主要考查圆的一般方程和标准方程，点到直线的距离公式，弦长公式的应用，属于中档题．20.【答案】解：（1）∵PA⊥平面ABCD，∴∠PDA为PD与平面ABCD所成角，且PA⊥AD，∵AD=2AB=√3PA=2，∴tan∠PDA=PAAD =√3 3，∴PD与平面ABCD所成角的大小为π6．（2）∵PA⊥平面ABCD，∴PA⊥AB，∵底面ABCD为矩形，∴AD⊥AB，∵PA∩AD=A，∴AB⊥平面PAD，∵AE⊥PD，∴S△PAE=12×PE×AE=√36，∴三棱锥P-ABE的体积为：V P-ABE=13×S△PAE×AB=√318．【解析】（1）由PA⊥平面ABCD，得∠PDA为PD与平面ABCD所成角，由此能求出PD 与平面ABCD所成角的大小．（2）推导出PA ⊥AB ，AD ⊥AB ，从而AB ⊥平面PAD ，由此能求出三棱锥P-ABE 的体积．本题考查线面角的求法，考查三棱锥的体积的求法，考查空间中线线、线面、面面间的位置关系等基础知识，考查运算求解能力，是中档题． 21.【答案】证明：（1）∵AB =BC ，AD =DC ，∴AC ⊥BD ，∵PA ⊥平面ABCD ，∴PA ⊥BD ， ∵PA ∩AC =A ，∴BD ⊥平面PAC ，∵BD ⊂平面BED ，∴平面BED ⊥平面PAC ． 解：（2）设AC 与BD 交于点F ，连结EF ， 由（1）知EF ⊥BD ，FC ⊥BD ， ∴∠EFC =45°，由（1）知F 为AC 中点， ∴PA =AC =2，∵PA ⊥AC ，∴∠PCF =45°，∴EF =√22，PE =3√22，且EF ⊥PC ，又PC ⊥BD ，∴PC ⊥平面BED ， ∴三棱锥P -BED 的体积： V P -BDE =13×S △BDE ×PE=13×12×BD ×EF ×PE =16×4√33×√22×3√22=√33．【解析】（1）推导出AC ⊥BD ，PA ⊥BD ，从而BD ⊥平面PAC ，由此能证明平面BED ⊥平面PAC ．（2）设AC 与BD 交于点F ，连结EF ，三棱锥P-BED 的体积V P-BDE =，由此能求出结果．本题考查面面垂直的证明，考查三棱锥的体积的求法，考查空间中线线、线面、面面间的位置关系等基础知识，考查运算求解能力，是中档题．22.【答案】解：（1）证明：由已知得C 1：（1，-5），r 1=5√2，C 2（-1，-1），r 2=√10，所以r 1+r 2=5√2+√10，|r 1-r 2|=5√2-√10，|C 1C 2|=2√5， 因为|r 1-r 2|＜|C 1C 2|＜r 1+r 2，所以两圆相交；（2）解：设圆C 3：（x -1）2+（y +5）2-50+λ[（x +1）2+（y +1）2-10]=0 因为过原点，所以12+52-50+λ（12+12-10）=0，解得λ=-3，代入C 3：（x -1）2+（y +3）2-50+（-3）[（x +1）2+（y +1）2-10]=0， 化简得x 2+y 2+4x -2y =0，所以圆C 3：x 2+y 2+4x -2y =0． 【解析】（1）用圆心距与两圆半径的关系证明；（2）设出经过两圆交点的圆系方程，然后代入原点． 本题考查了圆与圆的位置关系及其判定．属中档题．23.【答案】解（1）由已知得C 1（-1，2），r 1=2，C 2（2，0），r 2=3，所以r 1+r 2=5，|r 1-r 2|=1，|C 1C 2|=√13，因为|r 1-r 2|＜|C 1C 2|＜r 1+r 2，所以圆C 1与圆C 2相交，将两个圆方程相减，得（x +1）2+（y -2）2-（x -2）2-y 2=-5， 化简得两圆公共弦所在直线方程为：3x -2y +3=0 （2）由{y =kx +1(x+1)2+(y−2)2=4，得（x +1）2+（kx -1）2=4，化简得（1+k 2）x 2+（2-2k ）x -2=0且△=（2-2k ）2+8（1+k 2）＞0， 设A （x 1，y 1），B （x 2，y 2），则有x 1+x 2=-2−2k1+k 2，x 1x 2=−21+k 2， 因为OA ⊥OB ，所以x 1x 2+y 1y 2=0，即x 1x 2+（kx 1+1）（kx 2+1）=0， 化简得：（1+k 2）x 1x 2+k （x 1+x 2）+1= 所以-2-k(2−2k)1+k 2+1=0，化简得k 2-2k -1=0，解得k =1+√2或k =1-√2． 【解析】（1）用圆心距与两圆半径的关系判断两圆位置关系；用两圆方程相减消去二次项得相交弦所在直线方程；（2）联立直线与圆的方程，根据韦达定理以及两线垂直的向量关系列式可解得k ．本题考查了圆与圆的位置关系及其判定．属中档题．。
2018_2019学年高二英语上学期期中试题(10)
2018学年第一学期高二期中考试试题卷英语考生须知：1.本试卷分I卷（选择题）和II卷（非选择题）两部分。
满分150分。
考试时间120分钟。
2.每小题选出答案后，用铅笔把答题卡上相对应题目的答案标号涂黑。
如有改动，用橡皮擦干净后，再涂其它标号。
答在试题卷上的答案无效。
3.考试结束后，考生将答题卷上交。
I卷（选择题）第一部分：听力（共两节，满分30分）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，并标在试卷的相应位置。
听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。
每段对话仅读一遍。
1. What is the man probably?A. A patient.B. A policeman.C. A doctor.2. Where are the speakers?A. In a hotel.B. In a car.C. In a garden.3. What are the speakers mainly talking about?A. How to do a job interview.B. How to mention personal information.C. Whether to talk about college experience.4. What does the woman mean?A. She won’t have time to read a book.B. She has to finish her report on the trip.C. She needs to have a good sleep on the trip.5. What is the man’s favorite instrument now?A. The piano.B. The violin.C. The guitar.第二节（共15小题；每小题1.5分，满分22.5分）听下面5段对话，每段对话或独白后有几个小题，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。