2017—2018学年度第二学期期末考试试卷
2017～2018年度第二学期期末考试试题
2017～2018年度第二学期期末考试试题第I卷第一部分：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）请听下面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 can we learn from the conversation?A. The woman is leaving for America.B. The woman comes from London.C. The woman is surprised at what the man said.2. Where does the conversation most probably take place？A. In a zoo.B. In a forest.C. In a pet store.3. What can we know about Peter?A. He has heart disease.B. He is resting at home.C. He has got enough exercise.4. What are the speakers talking about?A. Play.B. Music.C. Hobbies.5. What are the speakers probably going to do?A. Go on a trip.B. Buy some food.C. Wait for a taxi第二节（共15小题；每小题1.5分，满分22.5分）听下面5段对话或独白。
每段对话或独白后有几个小题，从题中做给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。
听每段对话或独白前，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秒钟的作答时间。
2017-2018学年度第二学期期末考试.doc
2017-2018学年度第二学期期末考试汽车发动机构造与维修姓名_______ 班级____________ 成绩 ___________一、填空题（每题3分，共30分）1 •根据发动机中各运动副工作条件的不同，发动机一般采用___________ 润滑和________ 润滑方式。
2润滑系统_般由_______ _________ __________ __________ __________ ________ 和_____________ 等组成。
3•汽车上的常用机油泵有______________ 和____________ ，它们都属于________ 泵，都是依靠__________ 的变化完成吸油和泵油。
4•与主油道串联的滤清器称为________________ 一般为___________ ，与主油道并联的滤清器称为_______________ _ 般为___________ .5. ______________________________________________ 曲轴箱通风装置有两种通风方式，一种是______________________________________________________ ，另一种是__________6•从曲轴箱抽出的气体直接导入大气中的通风方式称为 ____________ -7. ___________________ 柴油机多采用通风方式。
8. _____________________________________________________ 冷却系的作用是.9. 通常，冷却水在冷却系内的循环路线有两条，一条为，另一条为________ •不经过____________ 的为 __________ .经过____________ 的为____________ .10•目前，汽车发动机一般采用___________ 节温器。
2017-2018学年度第二学期期末
2017-2018学年度第二学期期末分值：150分时间：120分钟第一部分听力（共两节，满分30分）第一节（共5小题，每小题1.5分）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 does the woman think of cloning?A. It has no side effect at all.B. It should be strictly for bidden.C. It may cause trouble for humans.2. What’s the possible relationship between the two speakers ?A. Friends.B. Husband and wife.C. Teacher and student.3. What do they hope to do?A. Stop cigarette production.B. Advise people not to smoke.C. Stop young people smoking.4. What teacher are they talking about?A. Their Chinese teacher.B. Their history teacher.C. Their politics teacher.5. What does the man think the weather will be like in April?A. Cool.B. Hot.C. Windy.第二节（共15小题，每小题1.5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。
听每段对话或独白前，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秒钟的作答时间。
2017—2018学年第二学期期末试题
2017—2018学年第二学期期末试题满分：150分考试时间：100分钟第I卷第一部分：听力（略）第二部分：阅读理解（共两节，满分40分）（共15小题；每小题2分，满分30分）AThe summer holidays are coming up. It's time to fill the books helves with quality literature for the kids. Here are some great books.Josephine Wants to Dance by Jackie FrenchPrice: A$14.99 (for ages 4+)Josephine is a kangaroo who loves to dance. Her little brother , Joey, tells her that kangaroos don't dance; they jump. But Jo sephine continues to point her toes and leap through the air. When aballet group comes to town and the lead ballerina (芭蕾舞演员) is injured, Josephine is called upon to help save the day. Can she do it, and, more importantly, does it matter that she's a kangaroo?House of Secrets by Chris ColumbusPrice: A$19.99 (for ages 9+)The Walker kids —Caroline, Brendan and Nell—may have saved the world, but they can' t save their home an d must leave Kristoff House. Things can't get any worse, but t hen it turns out that the Wind Witch is still alive and planning a n attack. To defeat her. the Walkers must return to the book w orld.The Walkers always help each other, but they must go it alone in their most important mission yet. And this time, if they fail, there's no chance of coming back.Edge of Extinction Book 1 by Laura MartinPrice: AS 16.00 (for ages 9+)If you like The Land of the Dinosaurs. You will love this boo k. Two hundred years ago, the first dinosaur was successfully cloned (克隆). Soon after, humans realized they'd made a big mistake. T hirteen-year-old Sky Mundy's father suddenly disappeared five years ago. Along with her best friend，Shawn，she steps out into the world above --a world of dinosaurs --to look for him. Then she learns that everything she's been ta ught has been a lie.21．Which book will you choose if your child is five years old?A. House of Secrets.B. Josephine Wants t o Dance.C. The Land of the Dinosaurs.D. Edge of Extinction Book 1.22．What can we learn about the Walker kids from the text?A. They live in a secret house.B. They hate each oth er.C. They are afraid of the Wind Witch.D. They have to carry o ut the task alone.23．What is the world like in the last book?A. It is full of dinosaurs.B. Animals live happily together .C. Many dinosaurs attack the earth.D. Many adults are killed by the dinosaurs.24．The text is especially helpful for those who .A. are interested in raising animalsB. want to make friends during the holidaysC. plan to educate their children during the holidaysD. want to explore an unknown world during the holidaysBIt was one of the hottest days of the dry season. We had not seen rain in almost a month. The crops were dying. Cows had stopped giving milk. The streams were long gone back into th e earth. If we didn't see some rain soon we would lose everyt hing.I was in the kitchen making lunch for my husband and his brot hers when I saw my six-year old son, Billy, walking toward the woods. He was obvious ly walking with a great effort... trying to be as still as possible. Minutes after he disappeared into the woods, he came runnin g out again, toward the house.Moments later, however, he was once again walking in that sl ow purposeful long step toward the woods. This activity went on for over an hour: walking cautiously to the woods, then run ning back to the house. Finally, my curiosity got the best of m e. I crept out of the house and followed him on his journey.He was cupping both hands in front of him as he walked; bein g very careful not to spill(洒出) the water he held in them. Branches and thorns slapped hi s little face but he did not try to avoid them. He had a much gr eater purpose. As I leaned in to spy on him, I saw the most amazing site.Several large deer appeared threatening in front of him. But B illy walked right up to them. I almost screamed for him to get a way. And I saw a baby deer lying on the ground, obviously suf fering from heavy loss of water and heat exhaustion, lift its he ad with great effort to lap up the water cupped in my beautiful boy's hand.I stood on the edge of the woods watching the most beautiful heart I have ever known working so hard to save a life. As the tears that rolled down my face began to hit the ground, they were suddenly joined by other drops... and more drops... and more. I looked up at the sky. It was as if God, Himself, was w eeping with pride.25. Why did the author follow her son?A. Because there might be danger.B. Because her son was doing a good deed.C. Because she was curious.D. Because she intended to help.26. Which of the following statements is Not True according to the passage?A. Rain was in great need.B. Billy carried water with his s mall hands.C. Billy walked into the woods and then returned over and ove r again.D. There were few trees in the woods.27. Which of the following is the best title for the passage?A. Importance of waterB. The water of lifeC. How to sa ve animalsD. Animals in dangerCGrowing up in Philadelphia, Lieberman started cooking with hi s stay-at-home dad when he was seven. His food-loving family had two kitchens, and he quickly learned what w as the best way to bake his cakes. Lieberman improved his kit chen skills greatly during a year abroad before college, learni ng from a cook in Italy and studying local specialties（地方特色菜）in Germany, Spain and France. At Yale, he was known for thr owing dinner parties, single-handedly frying and baking while mixing drinks for dozens of f riends. Just for fun, he and some friends decided to tape a sh ow named Campus Cuisine about his cooking. Lieberman wa s a real college student showing his classmates how to do thi ngs like make drinks out of dining-hall fruit. That helped the show become very popular among t he students. They would stop Lieberman after classes to ask f or his advice on cooking. Tapes of the show were passed aro und, with which his name went beyond the school and finally t o the Food Network.Food Network producer Flay hopes the young cook will find a place on the network television. He says Lieberman’s chari sma is key.“Food TV isn’t about food anymore,” says Flay. “It’s about your personality（个性）and finding a way to keep people’s eyeballs on your show.”But Lieberman isn’t putting all his eggs in one basket. After taping the first season of the new show, Lieberman was back in his own small kitchen preparing sandwiches. An airline com pany（航空公司）was looking for someone to come up with a tasteful, inexpensi ve and easy-to-make menu to serve on its flights, Lieberman got the job.28. We can learn from the text that Lieberman’s family ____.A. have relatives in EuropeB. love cooking at home C . often hold parties D. own a restaurant29. The Food Network got to know Lieberman ____.A. at one of his partiesB. from his teachersC. through his taped showD. on a television program30. What does the word “charisma” underlined in the text refer to?A. A natural ability to attract others.B. A way to show one’s a chievement.C. Lieberman’s after-class interest. D. Lieberman’s fine cooking skill.31. Why did the airline company give Lieberman the job?A. He could prepare meals in a small kitchen.B. He was famo us for his shows on Food TV.C. He was good at using eggs to make sandwiches.D. He could cook cheap, delicious and simple meals.DIt’s nothing new that you can find many files or services you c an download or use from the Internet. The question is : Is dow nloading legal or not? In most cases the answer is negative, b ecause sharing and downloading are illegal. Of course, you c an find files for legal downloading, but you have to pay for the m.It seems innocent if you click on the download mark, but it is n’t. It should be compared with stealing in a store. Would you steal a magazine, an MP3 player or a car? Downloading from the Internet is a theft, and sharing files, once you have stolen them, only makes it worse. For example, if everybody only downloaded, movies wouldn’t make money and the studios woul dn’t invest millions of dollars to make new ones.Many people may think it better, easier and cheaper to do do wnloading. I think, that is the main reason why Internet users prefer sharing something to buying them. In the modern world we love convenience and what could be more convenient tha n getting music, films and games without having to leave your house? You don’t need to pay for what you get, there is no re gistration, and you don’t have to wait until shops open or the CD/DVD you want is posted to you. However, you could be in big trouble if you are caught. You could go to prison as a resul t of acting unlawfully, but so far only a tiny amount of people h ave been charged for downloading illegally. The majority of pe ople who download illegally, and use the files for their person al use, will not get in trouble. And that’s why it’s important for people to understand what the long-term consequences are if they don’t want to pay for their musi c, films and TV. Will film and music companies still spend milli ons of pounds every year if they have no chance of making a profit? The answer is plainly “no”.Finally I would like to say that the Internet offers a lot of servi ces for money, but people will always try to get them for free. To summarize my thoughts I’d like to highlight that illegal downloading is both unfair towards producers and dangerous for t hose who practise this kind of activity. You have to decide wh ether to buy or download.Many people download files free from the Internet because__ _______.A. They follow others’ examples to do such things.B. They don’t think they may be charged by the producer.C. They think everything on the Net can be shared by others.D. They think it is legal, convenient and easy.What can be inferred from Paragraph 2?A. Downloading helps movies become more popular.B. Downloading free files is as illegal as stealing.C. Sharing files on the Internet is dangerous.D. Sharing files on the Internet can make a profit.What does the underlined word “highlight” in paragraph 4 mea n?A. StressB. ExplainC. AdmitD. Deny What is the author’s purpose of writing this text?A. He advises readers to download legal files.B. He asks readers to limit the amount of free downloading.C. He wants to make it clear that downloading for free is against the law.D. He tells readers how to avoid being charged for downloadi ng.第二节（共5小题；每小题2分，共10分）根据短文内容，从短文后的七个选项中选出能填入空白处的最佳选项。
2017-2018学年度第二学期期末考试初一数学试题及答案
2017—2018学年度第二学期期末考试初一数学试题一、填空题（每空1分，共22分）1、如果下降5米，记作－5米，那么上升4米记作（）米；如果＋2千克表示增加2千克，那么－3千克表示（）。
2、从80减少到50，减少了（）%；从50增加到80，增加了（）%。
3、某班有60人，缺席6人，出勤率是（）%。
4、如果3a=5b（a、b≠0），那么a：b=（）。
5、一个圆锥的体积12dm3 ,高3dm，底面积是（）。
6、甲、乙两数的比是5:8，甲数是150，乙数是（）。
7、比较大小：－7○－5 1.5○5 20○－2.4 －3.1○3.18、某服装店一件休闲装现价200元，比原价降低了50元，相当于打（）折。
照这样的折扣，原价800元的西装，现价（）元。
9、一个圆柱和一个圆锥的体积相等，底面积也相等，圆柱的高是4米，圆锥的是高（）米。
10、一桶油连桶称7.5千克，用去一半油后，连桶称还重4.5千克。
桶重（）千克，油重（）千克。
11、13只鸡放进4个鸡笼里，至少有（）只鸡要放进同一个笼子里。
12、一个圆柱形的木料，底面半径是3厘米，高是8厘米，这个圆柱体的表面积是（）平方厘米。
如果把它加工成一个最大的圆锥体，削去部分的体积是（）立方厘米。
13、找出规律，填一填。
3，11，20，30，（），53,（）。
二、判断题：对的在括号打√，错的打×。
（每小题1分共5分）1、0是负数。
（）2、书店以50元卖出两套不同的书，一套赚10%，一套亏本10%，书店是不亏也不赚。
（）3、时间一定，路程和速度成正比例。
（）4、栽120棵树，都成活了，成活率是120%。
（）5、圆柱的体积大于与它等底等高的圆锥的体积。
（）三、选择题（每题3分，共15分）1、规定10吨记为0吨，11吨记为＋1吨，则下列说法错误的是（）A、9吨记为－9吨B、12吨记为＋2吨C、6吨记为－4吨D、＋3吨表示重量为13吨2、在a12=13中，a的值是（）A、12B、4C、6D、83、把长1.2米的圆柱形钢材按2:3:7截成三段，表面积比原来增加56平方厘米，这三段圆钢中最长的一段比最短的一段体积多（）A、700立方厘米B、800立方厘米C、840立方厘米D、980立方厘米4、小刚把1000元钱按年利率2.4%存入银行，存期为两年，那么计算到期时她可以从银行取回多少钱（不计利息税），列式正确的是（）。
2017—2018学年度第二学期期末试题_1
2017—2018学年度第二学期期末试题时间：100分钟，满分：120分第I卷第一部分：阅读理解（共两节，满分40分）（共15小题；每小题2分，满分30分）阅读下列短文，从每题所给的四个选项（A、B、C、D）中，选出最佳选项。
AA HALF - EMPTY BASKETOnce there was a poor farmer and his farm belonged to a r ich man. One day he brought a basket of apples to the rich m an’s house. On the doorsteps, he met two monkeys dressed li ke children. They jumped onto the basket to eat the apples an d threw some on the ground. The farmer politely took off his h at and asked the monkeys to get off. They obeyed(服从) and the farmer went into the house. He asked to see the ri ch man. A servant took him to the room where the rich man w as sitting."I have brought you the basket of apples you asked for," h e said."But why have you brought a half-empty basket?" the rich man asked."I met your children outside, and they stole some of the ap ples."1. Why did the farmer bring apples to the rich man? Because ___________A. he was poorB. he liked the rich manC. his farm belonged to the rich manD. the rich man’s c hildren liked apples2. What did the monkeys do when the farmer was on the door steps?A. They jumped and jumped.B. They played.C. They ran away.D. They ate some of the apples3. The monkeys left the basket because ___________they had thrown apples on the groundB. the farmer had politel y asked them to get offC. they were afraid of the hatD. the farmer was angry with the m4. How did the rich man feel when he saw the basket? He felt ________.A. unhappyB. pleasedC. excitedD. movedBAll over the world people enjoy sports. Sports help to keep pe ople healthy, happy and help them to live longer.Sports change with the seasons. People play different games in winter and summer.Games and sports often grow out of people's work and every day activities. The Arabs use horses or camels in much of thei r everyday life; they use them in their sports, too.Some sports are so interesting that people everywhere go in f or them. Football, for example, has spread around the world. Swimming is popular in all countries near the sea or in those with many rivers.Some sports or games go back thousands of years, like runni ng or jumping. Chinese boxing, for example, has a very long h istory. But basketball and volleyball are rather new. Neither on e is a hundred years old yet. People are inventing new sports or games all the time.People from different countries may not be able to understand each other, but after a game they often become good friends. Sports help to train a person's character. One learns to fight hard but fight fair, to win without pride and to lose with grace.5．According to this passage we know that________. A．people began to play pingpong about one hundred years agoB．about 100 years ago people ran or jumped when they play edC．basketball has a longer history than volleyballD．not all the games have a long history6．The writer didn't tell us in this passage that________. A．basketball was invented inB．sports change with the seasonsC．games and sports often grow out of people's work and ev eryday activitiesD．football is played all over the world7．According to this passage, which of the following is NOT tr ue?A．Sports help to train a person's character.B．People swim only because there are a lot of rivers in their country.C．People from different countries may not be able to underst and each other before a game.D．Sports and games can develop the friendship between people all over the world.8．A lot of people have more free time from their work to enjo y sports because________.A．they like sports very muchB．they want to live longer C．they want to make a lot more friendsD．they don't have to go to work on Saturday or Sunday as b eforeCIf English means endless new words, difficult grammar and s ometimes strange pronunciation, you are wrong. Haven’t you noticed that you have become smarter since you started to le arn a language? According to a new study by a British univers ity, learning a second language can lead to an increase in you r brain power. Researchers found that learning other languag es changes grey matter. This is the area of the brain which pr ocesses information. It is similar to the way that exercise build s muscles.The study also found the effect is greater when the younger p eople learn a second language. A team led by Dr. Andrea Me chelli, from University College London, took a group of Britons who only spoke English. They were compared with a group of “early bilinguals” who had learnt a second language before t he age of five, as well as a number of later learners.Scans showed that grey matter density (密度) in the brain was greater in bilinguals than in people withou t a second language. But the longer a person waited before m astering a new language, the smaller the difference.“Our findings suggest that the structure of the brain is change d by the experience of learning a second language,” said the scientists. It means that the change itself increases the ability to learn. Professor Dylan Vaughan Jones of the of , has rese arched the link between bilingualism and math skills. “Having two languages gives you two windows on the world and make s the brain more flexible (灵活的),” he said. “You are actually going beyond language and h ave a better understanding of different ideas.”The findings were matched in a study of native Italian speake rs who had learned English as a second language between th e ages of two and thirty-four. , writing, and comprehension were all tested. The results showed that the younger they started to learn, the better. “St udying a language means you get an entrance to another worl d,” explained the scientists.9.The main subject talked about in this passage is ________.A. science on learning a second languageB. man’s ability of learning a second languageC. that language can help brain powerD. language learn ing and math study10. The underlined word “bilingual” probably means _______.A. a researcher on language learningB. a person wh o can speak two languagesC. a second language learnerD. an active langu age learner11. We may know from the scientific findings that ________.A. the earlier you start to learn a second language, the higher the grey matter density is.B. there is no difference between a later second language lea rner and one who doesn’t know a second language.C. the experience of learning a second language has bad effe ct on people’s brain.D. the ability of learning a second language is changing all the time.DTomato FestivalStarted in 2005, the Tomato Festival has grown into a local tr adition in . In recent years, the festival has added amusementpark-style rides and a yearly Creature Feature, which screens old h orrible movies. There are also dance competitions, parades a nd pancake breakfast. Third weekend in August.Address: 833 Tinkham Rd, Fountain Park, Wilbraham, Massa chusetts 01095 Phone：(413)599-0010Brat DaysDon't mistake this festival for a day filled with poorly behaved children. Begun in 1953, the gathering is the biggest festival i n the city each year and features more than 50 stands (摊位) selling the sausage, as well as a contest to see who can q uickly eat the most bratwurst (德国式小香肠) in ten minutes. Early August.Address: 17th and New Jersey sts, Kiwanis Park, , Phone: (920)457-9491Hope Watermelon FestivalThe festival dates back to the 1920s, when many trains went t hrough this small town and local watermelon growers would s ell their watermelon to parched travelers. These days, the fest ival sees a Watermelon Queen crowned(加冠的) and sometimes a world-record watermelon grown. There are also more than 300 stands selling arts and crafts from a six-state area, as well as a car show and the Watermelon Olympi cs. Early August.Address: , , Phone: (870) 777-3640Oyster Festival (牡蛎节)Featuring appearances from tall ships and oyster boats, this f estival has regularly drawn 60,000 visitors a year since it beg an in 1978.More than 3,000 volunteers make the festival poss ible each year. Norwalk is less than a two-hour drive from many of New England's larger cities, making it easy to attend the festival during a trip to New York or . Week end after Labor Day.Address: Sea view Ave, Veteran's Park, East , Phone: (800) 866-792512．Which of the following festivals has the longest history?A. Oyster Festival. ?B．Hope Watermelon Festival.C. Brat Days.D．Tomato Festival.13．The underlined word “parched” in the third passage mea ns________.A. tired B．hungry C．thirsty D．excited14．In which of the following activities can you enjoy the fright ening films?A．The Creature Feature B．The Watermelon Olympics C．The Eating-bratwurst Contest D．Dance Competitions 15．If it is August 15 today this year, you might still attend ___ _____.A．Brat Days B．Oyster FestivalC．Hope Watermelon Festival ? D．Tomato Festival七选五（共5小题；每小题2分，满分10分）根据短文内容，从短文后的选项中选出能填人空白处的最佳选项。
2017-2018学年度第二学期期末考试
2017-2018学年度第二学期期末考试时间：100分钟总分：150分第一部分：阅读理解（共两节，满分40分）第一节（共15小题；每小题2分，满分30分）AWe considered a list of the best American books-but we’d need a whole issue to do them justice. Here are five that help define the national character. Most from a century or so ago, they still entertain, teach, and inspire us.Moby-Dick by Herman MelvilleFirst published in 1851, the adventure stories of Captain Ah ab and his monomaniacal(偏执的) pursuit of the white whale draw us into a universe full of fa scinating characters and stories.The Education of Henry Adams by Henry AdamsAwarded the Pulitzer Prize in autobiography(自传) in1918, descended from one of America’s most famous po litical dynasties, Adams provides insight into his family, includi ng his experience as a private secretary to his father, minister to during the American Civil war.Leaves of Grass by Walt WhitmanWhen Whitman published Leaves of Grass in 1855, he wan ted to define the American experience-singing of the new country in a new voice, reflecting the great changes in the American literary world that had taken place d uring his lifetime.Poems by Emily DickinsonAn enthusiastic poet whose works have had considerable i nfluence on modern poetry, Dickinson’s frequent use of dashe s, occasional capitalization(大写) of nouns, and unconventional metaphors(隐喻) have contributed to her reputation as one of the most inve ntive(创新的) poets of the 19th century American literature. The Song of Hiawatha by Henry Wadsworth LongfellowFirst published in 1855, this is Longfellow’s most popular a nd most recognized poem, the heroic life and death of a magi c American Indian, sent by the Great Spirit to guide the nation s in the ways of peace.Walt Whitman wrote Leaves of Grass in order to ______. praise and show the great changes in the American literary w orldreflect the great changes in that had taken place during his lif etimegive Americans encouragement in a new voiceshow his talent and heroic life to us2. The underlined word “considerable” probably means “_____ _”A. satisfyingB. excitingC. inspiringD. great3. If you want to read a story about a magic American Indian, you can read ______.A. Moby-DickB. Leaves of GrassC. Poems D The Song of Hiawatha4. What’ s the purpose of the wirer writing this passage?A. To make an advertisement for a bookstore.B. To introduce several best American books to readers.C. To tell stories of several famous writers.D. To talk about some knowledge about literature.BWalking is so simple and convenient that it couldn’t possiblycount as exercise, right? Wrong．Study after study shows that regular walking can help you lose weight and reduce your risk of heart disease．The study published in Diabet es Research and Clinical Prac tice shows that the blood pres sure of the overweight men be ing tested improved and the a mount of body fat greatly decr eased．That’s good news, because w alking has now become the m ost popular fitness activity in t he United States．Convenient , simple, and gentle on the joi nts, walking is perhaps the ea siest form of exercise to maint ain．According to a survey, fo ur out of five women who start a walking program continue t o walk, while half of women w ho attempt other types of aerobic exercise(有氧运动), such as swimming, drop o ut during the first few months ．Here are some basics for walk ing exercise．Walk at a pace that makes yo u breathe heavily, but still able to talk．Your goal, first and foremost, i s to walk five days a week, 30 minutes a walk．Do that, and you are getting the base-level amount of exercise that r esearch says should maintain your health and vigor(精力)．Walk for as long as you are co mfortable the first week, even if it is just to your mailbox andback．Each following week, in crease that amount by no mor e than 10 percent．Start every walk with five minu tes of easy-paced walking, about the sam e pace at which you do shoppi ng, to get your body warmed u p．Then, cool down at the end of each walk with another five minutes of easy-paced walking．This allows y our heart rate to gradually spe ed up and slow down．．omen surveye d are walking as a means of exercise B ．50％ of the w omen surveye d want to swi m as a means of exercise C ．walking is mor e easily maint ained than oth er types of ae robic exercise D ．the effect of w alking is as go od as that of o ther types of a erobic exercis e6. Which of th e following stat ements is TRU E about walkin g for exercise?A ．Walking five d ays a week, 30 minutes alto gether, is the goal ．B ．Increase at le ast 10％ of th e amount of e ach previous week ．C ．Each walk sh ould start with the pace of d oing shopping ．D ．Walking as m uch as you ca n in the first w eek is sugges ted ．7. What is the purpose of the easy-paced walking in every walk?A ．To help reduc e your blood pressure ．B ．To help reduc e your risk of heart disease ．C To help your body lose fat．．D ．To help your heart rate cha nge gradually ．8. What would be the best titl e for the passa ge?A ．How to Keep Healthy?B ．Walking for E xerciseC ．Different Way s of ExerciseD ．Is Walking a Type of Exerc ise?CThe tradition of having a pine tree as a Christmas Tree is beli eved to come from . Since the medieval time, lighting a candl e on a tree is common to welcome guests. Such practice has evolved into the Christmas celebration.The formal Christmas Tree was introduced to England about 100 years ago when Queen married German Albert. The evid ence of Victoria's love for Albert is not only expressed through inheriting the German tradition of having a Christmas Tree bu t also through the gold Albert Statues that Victoria had ordere d to built for Albert, standing in many places in . In , the Christ mas Tree idea was brought by German immigrants too.The custom of sending Christmas cards was initiated in arou nd 1850. The first cards were decorated with elaborate design s of flowers, birds and landscapes.As for Saint Nicholas, or Santa Claus, the story goes back to t he third century.Legend has it, Saint Nicholas dedicated all his life to helping mankind, especially children. He died on December 6, which marks the Saint Nicholas Day in many European countries an d that was when gifts were given to children. Saint Nicholas bears many different names, such as Father Christmas in the UK, San Nicolas in the Netherlands, Le Pere Noel in France, and Kriss Kringle in .He also arrives on different dates to deliver presents to childre n in different countries, typically from chimneys. The chimney story was this: Santa flew over house tops in a sleigh, he drop ped coins by accident and they landed in some stockings han ging next to the fireplace to dry. From then on, red stockings were hung by the chimney in hopes that Santa would fill them with gifts.9. The passage is most probably taken from ______.A. a history bookB. a geography bookC. a folk story bookD. a book on culture10. Which of the following descriptions about Santa Clause is NOT right according to the passage?A. In the , Santa Claus is Father Christmas.B. Santa Claus usually delivers presents to children through chimneys.C. Santa Claus became known to the British about 170 year s ago.D. Santa Claus was devoted to helping mankind.11. We can infer from the passage that ______.A. England is the birthplace of pine treesB. Santa Claus was very popular among childrenC. it was the Germans who brought the Christmas tree to th eD. Santa Claus is someone only existing in people’s imagin ationDIt is often easy to feel overwhelmed (受打击的)in the face of species loss and habitat destruction. The pro blem is large and complex, and it's natural for individuals to fe el powerless. Yet, everything you do is vitally important. It ma y not seem to amount to much in the grand scheme of things, but your seemingly small actions, added together, can make a big difference. Here are some things you can do:Protect Wildlife Habitat. Perhaps the greatest threat to many s pecies is the widespread destruction of habitats. Farming, dev elopment, and cutting down of forests all result in loss of wildli fe habitats. In areas where rare species live, habitat destructio n can quickly force a species to extinction. By protecting habit at, entire communities of animals can also be protected toget her. Parks, reserves, and other protected lands are too often t he only places left untouched by habitat destruction.Reduce the threat of invasive (入侵的) species. The spread of non-native species has greatly reduced native populations around the world. Invasive species compete with native species for re sources and habitats. They can even prey on native species d irectly, greatly reducing their population. one way to reduce th e threat of invasive species is to grow native plants in your ga rden and to welcome native animals into your yard.Place bird-shaped paper on your windows. It is estimated that as many a s one billion birds in the die each year due to collisions with w indows. You can help reduce the number of collisions simply by placing bird-shaped paper on your windows. Other simple steps you can t ake are to draw the shades and curtains during brightest parts of the day, and put screens on the outside of the windows.Slow down when driving. Many native animals live in develo ped areas, in other words, close to humans. Roads are a parti cularly big danger to them: animals are at risk every time they try to cross. So when you’re out and about, slow down, and k eep an eye out for wildlife.12. Which of the following would be the best title for the passa ge?How Do Animals Become Extinct?The Importance of Protecting Wildlife.What Can We Do to Protect Wild life?New Ways of Saving Endangered Animals.13. The main idea of the second paragraph is ______.more parks and reserves should be builtwe should keep wildlife habitats from destructionconditions of parks and reserves have been improvedparks and reserves are best ways of protecting14. People are advised to put bird-shaped paper on their windows to ______.beautify their housesprotect the windows from birdsattract more birds to live nearbystop birds from hitting windows by mistake15. The underlined phrase “prey on” in paragraph 3 probably means “_____”drive away B. live withhunt down D. fight with第二节（共5小题；每小题2分，满分10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。
2017-2018学年度第二学期期末考试_4
2017-2018学年度第二学期期末考试第一部分听力（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 do we know about the man?A. He had a meetingB. He will have a long tripC. He sle pt well after a long flight2.Why hasn’t Peter noticed the soup boiling over?A. His heart is brokenB. He is not standing nearbyC. He i s thinking of marrying his girlfriend.3.What is the relationship between the speakers?A. Teacher and studentB. Hairdresser and customerC. Doctor and patient4.When does the bank close on Saturday?A. At 1:00 pm.B. At 3:00 pm.C. At 4:00 pm.5.What are the speakers doing?A. Surfing on the Internet.B. Sending a document via email .C. Writing an article.第二节(共 15 小题；每小题 1.5 分，满分 22.5 分)听下面5段对话或独白。
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。
2017-2018学年度第二学期期末考试.docx
2017— 2018 学年度第二学期期末考试七年级数学试题第Ⅰ卷（满分 100 分）一、选择题（共 10 小题，每小题 3 分，共 30 分）1. 下面的四个图形中，∠ 1 与∠ 2 是对顶角的是（）2. 1的平方根是（）4A.1B.1 C.1 D.1 216223. 点 P 在 y 轴上，位于原点的下方，距离坐标原点5 个单位长度，则点 P 的坐标是（）A. （ -5 ，0）B.（0， -5 ）C.（ 0， 5）D.（ 5，0）4.x 4x y3 方程组的解为y，其中一个方程是 ，另一个方程可以是（）1A. 3x 4 y 16B.y x 3C.x 3y 8D.2 x y 6 y5. 一个不等式组中两个不等式的解集如图所示，则这个不等式组的解集是（）A.0≤ x ﹤ 1B.0﹤ x ﹤ 1C.0≤ x ≤ 1D.0﹤ x ≤ 16. 我市七年级有 10000 名学生参加某项考试，为了了解这些学生的考试成绩，从中抽取了500 名考生的考试成绩进行统计分析 . 下列说法：①这 10000 名学生的考试成绩是总体；②每个学生的考试成绩是个体；③抽取的500 名考生的考试成绩是总体的一个样本；④样本容量是 10000.正确的有（）个 .A.4B.3C.2D.1 7. 如图，以下说法错误的是（ ）A. 若∠ EAD=∠ B ，则 AD ∥ BCB. 若∠ EAD+∠ D=180°，则 AB ∥CDC.若∠ CAD=∠ BCA ，则 AB ∥ CDD.若∠ D=∠EAD ，则 AB ∥ CD 8. 下列说法正确的是（）A. 若 ab 0 ，则点 P （ a ， b ）表示原点B. 点（ -1 ， a 2 ）在第三象限C. 已知点 A （ 3， -3 ）与点 B （ 3， 3），则直线 AB ∥ x 轴D. 若 ab 0 ，则点 P b）在第一、三象限（ a ，9. 五边形的五个外角的度数之比 1:2:3:4:5 ，那么该五边形的最小的内角的度数是（ ）A.24 °B.36 °C.48°D.60°点，设车速为 x10. 一辆匀速行驶的汽车在11:20 距离A 地 ，到达A 地时时间已经过了 12（x），50kmkm/h则车速应满足的条件是（）A.2 x50B.2x 50C.50 3 D.50 ≥ 333x 2x2二、填空题（共 6 小题，每小题 3 分，共 18 分）11. x 的 2 倍与 5 的和不小于 3，用不等式表示为 .12. 2x 3y 5 y 的值为 .已知 x ， y 满足方程组4 y，则 xx 413. 一个长方形在平面直角坐标系中三个顶点的坐标为（ -1 ， -1 ），（ -1 ， 3），（ -3 ， -1 ），则第四个顶点的坐标为 .14. 如果 x 2 2 x ，那么 x 的取值范围是 .15. 某校学生来自甲，乙，丙三个地区，其人数比为2:3:7 ，如图所示的扇形图表示上述分布情况，其中甲所对应扇形的圆心角是° .16. 观察算式：3， 238 ， 33 27 ， 4364 ， 53 125 ， 63 216 ， 73343 ， 83 512 ， 93 729 ，1 1103 1000 ， 2038000 ， 303 27000 ， 403 64000 ， 503125000 .319683 ， 3110592 .三、解答题（共 5 题，共 52 分）17. （本题满分 10 分，每小题 5 分）解下列方程组或不等式组 .x y 35x2 4 x 1（ 2）（ 1）8 y141 x 1 7 3 x 3x2 218. （本题满分 10 分）某校开设了足球、篮球、乒乓球和羽毛球四个课外体育活动小组，有512 名学生参加，每人只参加一个组.为了了解学生参与的情况，对参加的人员分布情况进行抽样调查，并绘制了下面两幅不完整的统计图，请根据图中提供信息，解答下面问题：（ 1）此次共抽查了多少名同学？（ 2）将条形统计图补充完整；在扇形统计图中的括号中填写百分数；（ 3）请估计该校参加篮球运动小组的学生人数19.（本题满分 10 分）如图 ,BE 平分∠ ABD,DE平分∠ BDC,且 BE⊥ ED,E 为垂足 , 求证 :AB ∥ CD.20.（本题满分 10 分）如图，把△ ABC向上平移 4 个单位长度，再向右平移 3 个单位长度得A1B1C1,其中A（-1，2），B（-3，-2），C（ 4， -2 ）.（1）在图上画出A1B1C1；（2）写出点A1，B1，C1的坐标；（3）请直接写出线段 AC在两次平移中扫过的总面积 .21.（本分 12 分）小要一种价 5 元的本，学校旁有甲、乙两个文具店正在做促活，甲商店的惠条件是：一次性超10 本，超的部分按价的70%售；乙商店的惠条件是：活期所有文具按价的85%售；(1)小要20 本本，他若甲商店，需花元，他若乙商店，需花元.(2)若小有120 元，他最多可多少本本?(3)分析小如果要 x 本本，到哪个商店省?第Ⅱ卷（满分50 分）四、填空题（共 4 小题，每小题 4 分，共 16 分）22.了解某校九年女生 1 分仰卧起坐的次数 , 从中随机抽了 50 名女生参加 , 并制成数分布直方（如）. 如果被抽的女生中有90%的女生 1 分仰卧起坐的次数大于等于30 且小于 50，那么 1分仰卧起坐的次数在40～45 的数是 ______.23.如 , 点 A,B 定点 , 直 l ∥AB， P 是直 l 上一点。
2017-18学年第二学期期末考试卷
2017-18学年第二学期期末考试卷本试卷分为第Ｉ卷（选择题）和第II卷（非选择题）两部分。
满分150分，考试时间120分钟。
注意事项：1. 考生务必将答案答在答题卡上, 在试卷上作答无效。
2. 答题前考生务必将答题卡上的姓名、准考证号用黑色字迹的签字笔填写。
3. 答题卡上选择题必须用2B铅笔作答, 将选中项涂满涂黑, 黑度以盖住框内字母为准, 修改时用橡皮擦除干净。
非选择题必须用黑色字迹的签字笔按照题号顺序在各题目的答题区域内作答, 未在对应的答题区域内作答或超出答题区域作答的均不得分。
第一部分：听力（共两节, 满分30分）做题时，先将答案标在试卷上。
录音内容结束后，你将有两分钟的时间将试卷上的答案转涂到答题卡上第一节：(共5小题；每小题1. 5分，满分7. 5分)听下面5段对话。
每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项，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。
例:How much is the shirt?A.￡19.15.B.￡9.15.C. ￡9.18.答案是B.1. Where does this conversation probably take place?A．In a bookstore. B. In a classroom. C. In a library.2.At what time will the film begin?A.7:20B.7:15C.7:003. What are the two speakers mainly talking about?A. Their friend Jane.B. A weekend trip.C. A radio program me.4. What will the woman probably do?A. Catch a train.B. See the man off.C. Go shopping.5. Why did the woman apologize?A. She made a late delivery.B. She went to the wrong place.C. She couldn't take the cake back.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。
2017-2018学年度下学期期末考试卷
2017-2018学年度下学期期末考试卷注意事项：1．本卷满分150分，考试时间120分钟2．答题前填写好自己的姓名、班级、考号等信息3．请将答案正确填写在答题卡上第I卷（选择题 100分）第一部分听力（共20题，每小题1.5分，共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 can we learn from the conversation?A．The new shirt doesn’t suit him.B．The man forgot to wear his new shirt.C．He has no chance to wear his new shirt.2．What time did Julie leave?A．At 8:00. B．At 8:15. C．At 8:50.3．What does the man suggest to the woman?A．Get a new bicycle.B．Buy a second-hand bicycle.C．It’s up to the woman to decide.4．What is the weather like now?A．Rainy. B．Sunny. C．Cloudy.5．What can we learn about the boy?A．He got the part he tried out for.B．He did’t want to get a role on the play.C．He failed to get the part but wasn’t discouraged.第二节（共15小题；每题1.5分，满分22.5分）听下面5段对话或独白。
2017—2018学年第二学期期末试卷
2017—2018学年第二学期期末试卷第一部分阅读理解(共两节，满分40分)第一节：阅读下面短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。
（共15小题；每小题2分，满分30）AWelcome to humanhairwigs. org! We have great deals on many of our products. Go ahead and try something new!Here at humanhairwigs. org, we have wigs (假发)for daily wear as well as wigs for just a special night out on the town (or a week on a passenger ship). We have many sty les perfect for fall and winter seasons. Gain the confidence yo u desire and show how beautiful you already truly are!Human Hair Wi gs hair and come in every ima ginablelength—long, short, and medium!Hair Pieces & Extensions Hair pieces are a great sol ution ifyou only need a half wig or a3/4 wig.Synthetic Wigs Find wigs for everyday wea r at lowprices right here online.Fin d Europeanwigs, wig careproducts,and accessoriesright here!Once you have purchased human hair wigs, it is a good i dea to have them shaped to best suit your face. Another thing to remember once you have your human hair wigs is that the y must be cared for. The better you care for them, the better they will continue to look and the longer they will last. When yo u are not wearing them, be sure to store them properly on a st and. As for washing them, be sure to follow any instructions th at may come with them.Caring for your hair piece is a vital part of ownership, an d one that too many owners forget about. Whether it is clothin g,a house,or a car,you can spot someone who doesn’t take c are of their belongings from a mile away. It is equally true for someone that doesn’t take care of their hair. Luckily,we carry a full line of care products. We also have a full collection of co mbs and brushes to help you style your hair. We carry shamp oos (洗发水)and other maintenance products to help prolong (延长)the life of your hairpiece and keep it looking its best year af ter year.1.What can we know from the passage?A.People who wear hair wigs are more confident than those w ho don’t.B.Choosing hair wigs has little to do with the shape of your ow n face.C.The more expensive the hair wigs are, the longer they are g oing to last.D.If you want a half wig,you should choose Hair Pieces & Ext ensions.2.From the last paragraph we can infer that .A.many people don’t realize the importance of caring for hair wigsB.if you forget to take care of your wigs, stay a mile away fro m peopleC.people who don’t care for their clothing won’t care for their wigsD.your hair wigs will soon break into pieces if you don’t comb them3.What does the underlined word “maintenance” probably me an?bing.B.Care.C.Skin.D.Health.4.What is the purpose of this passage?A.To give us some basic knowledge of human hair wigs.B.To let us realize the importance of human hair wigs.C.To advertise a website about human hair wigs.D.To teach you how to take good care of your hair wigs.BSituated in the southeast part of California, Death Valley cove rs an area of more than 3.3 million acres, even larger than the famous Yellowstone National Park.Death Valley is a land of extremes. It is one of the hottest pl aces on the surface of the earth. The highest ground temperat ure ever recorded was 93. 90℃ on July 15, 1972. It is the drie st place in North America with an average rainfall of only l.96 i nches a year. Death Valley also boasts the lowest point in the western hemisphere-Bad-water, at 85. 95 meters below sea level.Death Valley got its name in 1849, when a group of emigran ts were looking for a shortcut to the gold field of California. Th ey were given bad advice and went into the valley. Some of th em were killed by the bad weather and harsh road. When the rest finally walked out, they gave the area its name by saying to it "Good-bye, Death Valley".As the name might suggest, there is very little apparent veg etation within Death Valley. First impressions, however, can b e deceiving. Death Valley includes more than 1000 species of plants that have adapted to the harsh conditions.Death Valley is also a land of beauties. Sunrise and sunset are two of the most spectacular attractions. Depending on different angles, they show many of the area's different moods.F or the best viewing, plan to be there approximately one hour b efore sunset or before sunrise.Death Valley National Park is open all year round. In spite o f the climate, hiking is one of the most popular activities in De ath Valley. The surrounding mountains produce spectacular w ildflower displays along with snow-covered peaks, breathtaking sand dunes, abandoned mines a nd industrial structures.5.All the following statements are the most special natures of Death Valley except that _______.A.it has the largest number of desert plantsB.it has the hottest ground in the worldC.it is the driest place in North AmericaD.it is the lowest in the western hemisphere6.From the passage we can know that the name Death Valley comes from the fact that _______.A.no one can escape from its bad weatherB.it's too hot for any plants to grow thereC.some persons died from its terrible climate atD.it is so dry that no living things can exist7.Though Death Valley has horrible living conditions, the auth or thinks highly of ________.A.its snow-covered peaksB.its special climateC.its wild lifeD.the view of sunrise and sunset8.The purpose of this passage probably is _______.A.telling us the danger of Death ValleyB.giving us a general introduction of Death ValleyC.encouraging us to pay a visit to Death ValleyD.describing the beauty of Death ValleyCIn my living room,there is a plaque (匾) that advises me to“B loom (开花) where you are planted.” It reminds me of Dorothy.I got to k now Dorothy in the early 1980s,when I was teaching Early Chi ldhood Development through a program with Union College in Barbourville,Kentucky.The job responsibilities required occasi onal visits to the classroom of each teacher in the program.Do rothy stands out in my memory as one who“bloomed”in her re mote area.Dorothy taught in a school in Harlan County,Kentucky,Appa lachian Mountain area.To get to her school from the town of H arlan,I followed a road winding around the mountain.In the eight-mile journey,I crossed the same railroad track five times,givin g the possibility of getting caught by the same train five times. Rather than feeling excited by this drive through the mountain s,I found it depressing.The poverty level was shocking and th e small shabby houses gave me the greatest feeling of hopele ssness.From the moment of my arrival at the little school,all gloom (忧郁) disappeared.Upon arriving at Dorothy’s classroom.I was g reeted with smiling faces and treated like a queen.The childre n had been prepared to show me their latest projects.Dorothy told me with a big smile that they were serving poke greens s alad and cornbread for“dinner”(lunch).In case you don’t know, poke greens are a weed-type plant that grows wild,especially on poor ground.Dorothy never ran out of reports of exciting activities of her students.Her enthusiasm never cooled down.When it came ti me to sit for the testing and interviewing required to receive h er Child Development Associate Certification,Dorothy was rea dy.She came to the assessment and passed in all areas.After ward,she invited me to the one and only steak house in the ar ea to celebrate her victory,as if she had received her Ph.D.de gree.After the meal,she placed a little box containing an old pen in my hand.She said it was a family heirloom (传家宝),but to me it is a treasured symbol of appreciation and pride that cannot be matched with things.9.“Early Childhood Development” in Paragraph 1 refers to .A.a programme directed by DorothyB.a course given by the authorC.an activity held by the studentsD.an organization sponsored by Union College10.In the journey, the author was most disappointed at seeing .A.the long trackB.the poor housesC.the same trainD.the winding road11.What can we know about Dorothy from the last paragraph ?A.She was invited to a celebration at a restaurant.B.She got a pen as a gift from the author.C.She passed the required assessment.D.She received her Ph.D.degree.D（改编）Many cities have interesting nicknames. Nicknames can help establish the identity of a city. They can also spread pride am ong its citizens.New Orleans, Louisiana probably has more nicknames tha n any other American city. One web site lists more than twent y nicknames. The most famous is “The Big Easy” It describes the gentle, slow and easy-going way of life in New Orleans.So how did the city get this nickname? In the early 1900s th ere was a dance hall in New Orleans called “The Big Easy”. B ut the nickname did not become famous until the early 1970s. That was when a Louisiana newspaper writer began calling N ew Orleans by this name. She compared the easy-going way of life there to the hurried pace of life in New York City.In 1970, James Conaway wrote a crime novel called “The Big Easy”. The story was set in New Orleans. In 1987, that bo ok was made into a film which made the nickname even more popular.New Orleans has other nicknames. One of them is “The Cr escent(新月) City”. During the 19th century, new neighbourhoods expan ded out from what is now known as the French Quarter. Thes e areas followed the great curve (曲线) of the Mississippi River, giving New Orleans the shape ofa crescent.Another nickname is “The Birthplace of Jazz”, because that kind of music started in New Orleans. It is also called “Mardi Gras City” for the wild celebrations and parades that take plac e there every year. And, there is a nickname that uses the sh ort way to write New Orleans and Louisiana. If you do not wan t to use the complete name, you can call the city “NOLA”. 12.Which of the following nicknames does not refer to New Or leans?A.The Birthplace of Jazz.B.The Sin City.C.Mardi Gras City.D.The Crescent City.13.Which of the following statements about New Orleans is n ot TRUE?A.It has the most nicknames among American cities.B.One of its neighbouring cities is the New York City.C.Its people enjoyed celebrations and parades.D.It is by the river of the Mississippi.14.Which of the following statements about James Conaway i s correct?A.He described the easy-going way of life in New Orleans in his book.B.He was a newspaper writer based in New Orleans.C.He wrote a romantic story named “The Big Easy”.D.His book was adapted into a movie.15.What’s the best title of the passage?A.The Big EasyB.Cities and nicknamesC.New Orleans and its nicknamesD.Nicknames—the Identity of a city第二节七选五(共5小题:每小题2分，满分10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中有两项为多余选项。
2017—2018学年度第二学期期末考试初二数学试题及答案
2017—2018学年度第二学期期末考试初二数学试题题目一二三总分评卷人得分一、选择题（每小题3分，共30分）1．下列调查中，适合用普查方式的是（）A．调査绥化市市民的吸烟情况B．调查绥化市电视台某节目的收视率C．调查绥化市市民家庭日常生活支出情况D．调査绥化市某校某班学生对“文明佛山”的知晓率2．如图，将三角形向右平移2个单位长度，再向上平移3个单位长度，则平移后三角形三个顶点的坐标分别是（）A．(1，7)、(-2，2)、(3，4)B．(1，7)、(2，2)、(3，4)C．(1，7)、(2，－2)、(3，3)D．(1，7)、(2，2) 、( 3，4)3．已知直线a外有一点P，则点P到直线a的距离是（）A．点P到直线的垂线的长度B．点P到直线的垂线段C．点P到直线的垂线段的长度D．点P到直线的垂线4．如图，已知直线AB，CD相交于点O，OE平分∠BOD，OF平分∠COE，∠2：∠1＝4：1，则∠AOF的度数是（）A.130°B.125°C.140°D.135°5．已知关于x的不等式（1－a）x＞3的解集为x＜31a-，则a的取值范围是（）A．a>0 B．a<0 C．a<1 D．a>16．如果点P（5，y）在第四象限，那么y的取值范围是（）A．y>0 B．y<0 C．y≤0D．y=07．下列说法正确的是（）A．2π是分数B．2π是无理数C．如果a为实数，那么2a为正数D．如果a为实数，那么－a为负数7．若点A（a，4）和点B（3，b）关于y轴对称，则a，b的值分别是（）A．3，4 B．2，－4 C．－3,4 D．－3,－49．有40个数据，共分成6组，第1～4组的频数分别是10，5，7，6，第5组的频率为0．10，则第6组的频率为（）A．0.20 B．0.30 C．0.25 D．0.1510．已知4520430X Y ZX Y Z-+=⎧⎨+-=⎩（xyx≠0），则x：y：x的值是（）A．2:1:3 B．1:2:3 C．3:2:1 D．不能确定二、填空题: （每题3分，共33分）11．如果点P（a＋6，a－3）在x轴上，那么其坐标是。
2017—2018学年度第2学期期末考试
B．The Golden Gate Bridge.
C．The Golden Gate Park.
20．What can the travelers do at Alanmo Square?
A．Do some shopping． B．Take some photos. C．Watch TV shows．
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12．Why isn’t the woman playing soccer now?
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2017---2018学年度第二学期期末考试七年级数学试卷含答案
2017---2018学年度第二学期期末考试七年级数学试卷一、选择题（共10道小题，每小题3分，共30分） 下列各题均有四个选项，其中只有一个．．是符合题意的． 1．PM2.5也称为可入肺颗粒物,是指大气中直径小于或等于2.5微米的颗粒物.2.5微米等于 0.000 002 5米，把0.000 002 5用科学记数法表示为 A ．2.5×106 B ．0.25×10-5 C. 25×10-7 D ．2.5×10-6 2. 已知a b <，则下列不等式一定成立的是 A ．b a 2121<B ．22a b -<-C ．33->-b aD ．44a b +>+3．下列计算正确的是A ．2a +3a =6a B. a 2+a 3=a 5 C. a 8÷a 2=a 6 D. (a 3)4= a 74．⎩⎨⎧==3,1y x 是二元一次方程52=+ay x 的一个解，则a 的值为A. 1B.31C. 3D. －1 5．若把不等式x +2≤0的解集在数轴上表示出来，则正确的是A ．B ．C ．D ．6．下列因式分解正确的是A ．4)2)(2(2-=-+x x x B ．22)1(12x -=+-x x C ．()222211a a a -+=-+D ．()248224a a a a -=-7．小文统计了本班同学一周的体育锻练情况，并绘制了直方图①小文同学一共统计了60人;②这个班同学一周参加体育锻炼时间的众数是8; ③这个班同学一周参加体育锻炼时间的中位数是9; ④这个班同学一周参加体育锻炼时间的平均值为8.根据图中信息，上述说法中正确的是A. ①②B. ②③C.③④D. ①④8．将直尺和直角三角板按如图所示方式摆放，已知∠1=30°，则∠2的大小是A．30°B．45°C．60°D．65°9．某市居民用电的电价实行阶梯收费，收费标准如下表：一户居民每月用电量x（单位：度）电费价格（单位：元/度）0≤< 0.48x200<0.53200≤x400x>0.78400七月份是用电高峰期，李叔计划七月份电费支出不超过200元，直接写出李叔家七月份最多可用电的度数是A．100 B．396 C．397 D．40010用小棋子摆出如下图形，则第n个图形中小棋子的个数为A. nB. 2n Ｃ. n2Ｄ.n2+1二、填空题：（共6道小题，每小题3分，共18分） 11．因式分解：=__________________. 12．计算ab ab b a 44822÷-)(结果为_____________.13．一个角的补角等于这个角的3倍，则这个角的度数为_____________．14.已知x ，y 是有理数，且0106222=+-++y y x x ， 则y x = ．15.两个同样的直角三角板如图所示摆放，使点F ，B ，E ，C 在一条直线上，则有DF ∥AC ，理由是__________________．16．《九章算术》是中国古代的数学专著，下面这道题是《九章算术》中第七章的一道题：“今有共买物，人出八，盈三；人出七，不足四，问人数、物价各几何？”译文：“几个人一起去购买某物品，如果每人出8钱，则多了3钱；如果每人出7钱，则少了4钱．问有多少人，物品的价格是多少？”设有x 人，物品价格为y 钱，可列方程组为__________________．三、解答题（共10道小题，共52分,其中第17—24每小题5分，25，26每小题6分）17．计算：22-020173-）21（）14.3-（）1-（++π18．化简求值：已知250x x +-=，求代数式2(1)(3)(2)(2)x x x x x ---++-的值．19．完成下面的证明:2218x -如图，已知DE ∥BC ，∠DEB =∠GFC ，试说明BE ∥FG ． 解：∵DE ∥BC∴∠DEB =______（ ）. ∵∠DEB =∠GFC∴______=∠GFC （ ）.∴BE ∥FG （ ）.20.解方程组⎩⎨⎧=-=+133232y x y x21．解不等式组()315112 4.2x x x x -+⎧⎪⎨--⎪⎩＜，≥并求出它的非负整数解．22.某单位有职工200人，其中青年职工(20-35岁)，中年职工(35-50岁)，老年职工(50岁及以上)所占比例如扇形统计图所示.为了解该单位职工的健康情况，小张、小王和小李各自对单位职工进行了抽样调查，将收集的数据进行了整理，绘制的统计表分别为表1、表2和表3.表1：小张抽样调查单位3名职工的健康指数年龄 26 42 57 健康指数977972表2：小王抽样调查单位10名职工的健康指数年龄 23 25 26 32 33 37 39 42 48 52 健康指数 93899083797580696860表3：小李抽样调查单位10名职工的健康指数年龄 22 29 31 36 39 40 43 46 51 55 健康指数94908885827872766260根据上述材料回答问题：(1)扇形统计图中老年职工所占部分的圆心角度数为(2)小张、小王和小李三人中， 的抽样调查的数据能够较好地反映出该单位职工健康情况，并简要说明其他两位同学抽样调查的不足之处.23.已知：如图，DE 平分∠BDF .， ∠A =21∠BDF ，DE ⊥BF ，求证：AC ⊥BF24.列方程组解应用题新年联欢会上，同学们组织了猜谜活动，并采取每答对一题得分，每答错一题扣分记分方法。
2017-2018学年度第二学期期末考试_3
2017-2018学年度第二学期期末考试答题时间：120分钟，满分：150分第一部分阅读理解(共两节，满分60分)第一节 (共15小题；每小题3分，满分45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，并在答题卡上将该项涂黑。
APersonal RobotMake your parents and teachers happy!Are you having problems finishing your homework on time? D o you avoid tidying your room until your mom shouts at you? You don’t need to worry if you buy a Mr. Helping Hand person al robot. Mr. H can be programmed to organize your homewor k. Your own personal robot will follow you around, putting awa y books and objects that you have left on the floor or bed. Mr. H also has these features (特点)●weighs only 500 grams●includes long-lasting batteries●comes with a 5-year guarantee●remembers simple instructionsOriginally (最初) sold for $499NOW ONLY $299PENGO WATCH CONTROLThis is a watch that James Bond would be proud to wear! This is NOT a watch for ordinary people!Your electronic PENGO WATCH CONTROLacts as a remote control for TVs and videos.gives you a daily weather forecast.reminds you when to hand in your homework.sets off a silent warning alarm when parents or teachers are n ear.Besides, your PENGO WATCH CONTROL will always tell yo u the time accurately!Originally sold for $199NOW ONLY $99 For more information, click here.1. With help from a Mr.H, you can _______.A. stop using batteriesB. get your room tidied on your way homeC. remember your teacher’s instructionsD. finish your homework on time2. If you buy a PENGO WATCH CONTROL now, you can save _______.A. ＄99B. ＄100C. ＄200D. ＄1993. Where would you be most likely to find the two texts?A. On a notice boardB. In a company brochure.C. On a teenage websiteD. In a college newspaper.BGold Coast family holidays are always great fun whether you are from Australia or from abroad. There are beautiful beache s, adventure parks, nature parks and so much more.There are so many sights to see here. It is a pity to drive in a car and you’ll miss a great part of it. Australia is home to man y animals and birds that can only be seen when moving slowl y and going into the areas that they live.When you are on a bicycle, you have the advantage of being able to stop whenever you want to see an interesting animal o r bird that you have never seen before. It is a quieter way of tr ansportation as well, so you might even be able to take a pict ure. When you are on the beach, you can breathe that clean a ir and view the beauty of the water and sand. It is a totally diff erent experience from either simply sunbathing or passing it in a car.There are many choices of hiring a bicycle to experience the Gold Coast attractions. There are stores that will fit a bike perf ectly to your size. These bikes for both adults and children are in many styles and colors to please any taste. If you have ev er wanted to try a tandem bike (双人单车), now is your chance, because they have those too.A bicycle hire on Gold Coast is something that everyone shou ld try at least once. This is a wonderful chance for anyone wh o likes to cycle and it is also a cheap way to travel with your fa mily.4. Driving in a car on Gold Coast is not suggested because __ ____.A. you will break the traffic rulesB. you can’t enjoy the b eautiful scenery wellC. you will cause much noiseD. you can’t drive into some park s5. The following advantages of hiring bikes are mentioned EX CEPT that ______.A. it is a good way to do sunbathingB. it is a cheap way of travelingC. you can get a clearer sight of animalsD. you can take photos of animals6. What is the author’s attitude towards a bike hire on Gold C oast?A. He doesn’t like this way of travelingB. He thinks it is a personal choiceC. He supports it very much.D. He thinks it is only good for ad ults7. What is Paragraph 4 mainly about?A. How to hire bikes on Gold CoastB. What kinds of bikes ther e are in storesC. What bikes are the most popularD. Who can hire bikes on Gold CoastCPaula and her husband have four kids, three pet dogs, and a r abbit. When the house is very noisy, Helen, one of the childre n, is quietly inventing. A year ago, the 10-year-old had to design an anti-smoking poster for a school project. Rather than a poster, she came up with the idea of creating something that shows the a verage amount of tar(尼古丁) a smoker collects from just four packs of cigarettes.“I like people to play with things more than read and write,” she says. So she researched her idea on the Internet, found a c ompany in China that could make it, saved up her pocket mon ey and got her idea made.Paula says her daughter “thinks differently”: Ideas jump into h er mind. After she got sun-burnt on holiday, Helen invented a small plastic bracelet（手镯) that changes color in the sun, telling you when to put on s unscreen. Several sunscreen companies have expressed an i nterest in the idea. She also came up with an idea to make a ball filled with water to stop the dog from feeling thirsty. “But w e didn’t do anything with it,” says Paula.Then she pulls out a picture of a special fishing rod she has d esigned. “ There is a camera on the hook, ” she explains, “an d the screen is on the handle，and it shows you if you’ve caught a fish or not. ”Helen doesn’t want to go to university. She keeps her pink-and-cream bedroom tidy. Paula is amazed and a bit confused by h er daughter. “Everything has to be in a certain order,” Paula s ays. “Her brothers and sisters go with the flow, but with Helen, it’s‘What time will that be happening?’ or ‘Where am I being picked up from today?’”8. From Paragraph 2, we can infer that Helen _______.A. is not willing to go to schoolB. likes to play with her brothers and sistersC. prefers making something by herselfD. is good at reading and writing9. What did Helen invent after she got sun-burnt on vacation?A. The anti-smoking posterB. The bracelet telling when to put on sunscreenC. The ball providing water for thirsty dogsD. The fishing rod telling whether you’ve caught a fish10. The underlined phrase “go with the flow” probably means “_______”.A. do what most people usually doB. set an example to othersC. follow the fashion closelyD. do something differently from others11. The passage is mainly about _______.A. how Helen helps people give up smokingB. a little girl’s dream to be a world-famous inventorC. a 10-year-old inventor’s storyD. Helen’s relationship with her family membersDMost children have ever heard their parents yell“sit up straight ！”or“don＂t slouch（无精打采）！”when they eat dinner．Nowadays，it is also heard around another activity -video games. Ten-year-old Owaish admits it takes him three to four hours a day to pla y games on his tablet computer. In addition, he plays for abou t two hours on the smart phone every day. As a result, he star ted suffering a severe pain in the neck around June or July. W hat's worse, the pain has spread to the hand and back gradua lly, which makes his mother Mehzabin become concerned. The doctors note the number of young children with the chroni c pain（慢性痛） in their necks，arms and shoulders is on the increase sharply in recent years . They are not aging, they haven't had an accident, the blood r eports are fine, their X-rays are fine. Facts have proved that the pain is from the poor posture while they are playing video games on smart phones or other electronic devices. 19-year-old student Nida feels pain in the finger which holds the weigh t of her smart phone most of the day. Nida almost uses her s mart phone 24/7, which means 24 hours a day,seven days aweek, or all the time.Health experts predict there will be not only physical but psyc hological and emotional problems resulting from the overuse of electronic devices. They encourage people to often take br eaks and exercise from using computers,smart phones or oth er devices. Stand up. Stretch the legs, back, shoulders and ar ms in all the possible directions. That is the most effective wa y and maybe the key to solving the problem completely. After all, the medication does not help sometimes.12. What is Mehzabin worried about?A. Her son has no table mannersB. Her son doesn't work hard at schoolC. Her son's physical problems get worseD. Her son spends much money on video games13. What do we know about the chronic pain?A. Adults don't have the problemB.It is caused by the wrong body positionC. Using a heavy smart phone will cause it.D. Children with it usually have other diseases14. According to health experts,_____________A. people should stop using smart phonesB. the best treatment for the chronic pain is exercisingC. people must take medicine to cure the chronic painD. the chronic pain has nothing to do with ones mental health15. Where does the text probably come from?A. A health reportB. A news storyC. A research planD. A business magazine第二节 (共5小题;每小题3分,满分15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。
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2017—2018学年度第二学期期末考试试卷高二文科数学（时量：120分钟，满分；150分）一、选择题：本大题共12小题，每小题5分，共60分，在每个小题给出的四个选项中，只有一项是符合题目要求的．1．设回归方程为x y 32-=，则变量x 增加一个单位时（ ）A ．y 平均增加2个单位B ．y 平均增加3个单位C ．y 平均减少3个单位D ．y 平均减少2个单位 2．复数223(1)()m m m i m R +-+-∈为纯虚数，则（ ） A ．m=1或m=－3B ．m=1C ．m=－3D ．m=33．圆sin )ρθθ=+的圆心坐标是（ ）A ．（1，4π）B ．（21，4π） C ．（2，4π） D ．（2，4π）4．将函数y=f(x)的图象上各点的横坐标缩短到原来的一半（纵坐标不变），再将其纵坐标伸长到原来的3倍（横坐标不变）得到的图象对应的函数解析式为（ ） A ．1(2)3y f x =B ．y=3f(2x)C ．1()32x y f =D ．3()2x y f =5．回归分析中，相关指数R 2的值越大，说明残差平方和（ ） A ．越小 B ．越大 C ．可能大也可能小 D ．以上全都不对6．若执行右下的程序框图，输入6,4n m ==，则输出的p 等于（ ） A ．720 B ．360C ．240D ．1207．复数i i 21121-++-的虚部是（ ） A ．i 51 B ．51C ．i 51- D ．51-8．下面几种推理是合情推理的是（ ）①由圆的性质类比出球的有关性质；②由直角三角形、等腰三角形、等边三角形的内角和是0180归纳出所有三角形的内角和是0180；③一班所有同学的椅子都坏了，甲是1班学生，所以甲的椅子坏了； ④三角形内角和是0180，四边形内角和是0360，五边形内角和是0540， 由此得出凸n 边形内角和是0180)2(⋅-n ．A ．①②④B ．①③④C ．②④D ．①②③④ 9．满足条件|z －i|=|3+4i| 的复数z 在复平面上对应点的轨迹是（ ） A ．一条直线 B ．两条直线 C ．圆 D ．椭圆10．已知点（x,y ）满足曲线方程⎪⎩⎪⎨⎧+=+=θθsin 26cos 24y x （θ为参数），则x y 的最小值是（ ） A ．23B ．23 C ．3 D ．111．在参数方程⎩⎨⎧+=+=θθsin cos t b y t a x (t 为参数)所表示的曲线上有B 、C 两点，它们对应的参数值分别为12,t t ，则线段BC 的中点M 对应的参数值是（ ）A ．122t t - B ． 122t t+ C ． 122t t -D ． 122t t +12．设△ABC 的三边长分别为,,a b c ，△ABC 的面积为S ，内切圆半径为r ，则2Sr a b c=++．类比这个结论可知：四面体ABCD 的四个面的面积分别为1234,,,S S S S ，四面体ABCD 的体积为V ，内切球的半径为，则=（ ）A ．1234V S S S S +++ B ． 12342VS S S S +++C ．12343V S S S S +++ D ． 12344VS S S S +++二、填空题：本大题共4小题，每小题5分，共20分.13．极坐标方程(cos sin )10ρθθ+-=化为直角坐标方程是 ． 14. 曲线x x x f ln )(=在点1=x 处的切线方程为 ．15.直线2()1x t t y t=-+⎧⎨=-⎩为参数被圆22(3)(1)25x y -++=所截得的弦长为 ．16．半径为r 的圆的面积s(r)= 2r π，周长c(r)=2r π，若将r 看作),0(+∞上的变量，则)(2'r π=2r π①①式可用文字语言叙述为，圆的面积函数的导数等于圆的周长函数； 对于半径为R 的球，若将R 看作),0(+∞上的变量，请你写出类似于①的式子 ． ②该式可用文字语言叙述为 ．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．（本小题满分10分）已知数列{}n a 满足1a 1=，且nnn a a a +=+11 （,3,2,1=n …，） (Ⅰ)求432,,a a a 的值，并猜想出这个数列的通项公式； (Ⅱ)求12233478S a a a a a a a a =++++的值．18.（本小题满分12分）已知曲线C 的极坐标方程是1ρ=，以极点为原点，极轴为轴的正半轴建立平面直角坐标系，直线的参数方程为12t x y ⎧=+⎪⎪⎨⎪=⎪⎩ （ t 为参数）.（Ⅰ）写出曲线C 的直角坐标方程与直线的普通方程；（Ⅱ）设直线l 与曲线C 相交于,A B 两点，求,A B 两点之间的距离．x l l19．(本小题满分12分)(Ⅰ)2> (Ⅱ)已知,a b 为正实数，请用反证法证明：与中至少有一个不小于2．20．(本小题满分12分）近年来我国电子商务行业迎来篷勃发展的新机遇，2016年双11期间，某购物平台的销售业绩高达一千多亿人民币．与此同时，相关管理部门推出了针对电商的商品和服务的评价体系．现从评价系统中选出200次成功交易，并对其评价进行统计，对商品的好评率为0.6，对服务的好评率为0.75，其中对商品和服务都做出好评的交易为80次． (Ⅰ)请完成如下列联表；(Ⅱ)是否可以在犯错误的概率不超过0.1%的前提下，认为商品好评与服务好评有关？(Ⅲ)若针对商品的好评率，采用分层抽样的方式从这200次交易中取出5次交易，并从中选择两次交易进行客户回访，求只有一次好评的概率．2()0.150.100.050.0250.0100.0050.0012.072 2.7063.841 5.024 6.6357.87910.828P K k k≥（22()()()()()n ad bc K a b c d a c b d -=++++，其中n a b c d =+++）b a 1+ab 1+21．（本小题满分12分）如图所示, 四棱锥P A B C -底面是直角梯形,,,2,BA AD CD AD CD AB PA ⊥⊥=⊥底面ABCD , E 为PC 的中点, 1PA AD AB ===.(Ⅰ)证明: //EB PAD 平面; (Ⅱ)证明: BE PDC ⊥平面; (Ⅲ)求三棱锥B PDC -的体积. 22．（本小题满分12分）如图，有一块半椭圆形钢板，其长半轴为2r ，短半轴为r ，计划将此钢板切割成等腰梯形的形状，下底AB 是半椭圆的短轴，上底CD 的端点在椭圆上，记2CD x =，梯形面积为S ．(Ⅰ)求面积S 关于变量x 的函数表达式，并写出定义域； (Ⅱ)求面积S 的最大值．2017—2018学年度第二学期期末考试试卷高二数学(文)参考答案一、选择题：本大题共12小题，每小题5分，共60分.1．C 2．C 3．A 4． B 5． A 6． B 7．B 8．A 9．C 10．D 11．B 12．C 二、填空题：本大题共4小题，每小题5分，共20分.13．10x y +-= 14．1 1516．324()'43R R ππ= , 球的体积函数的导数等于球的表面积函数三、解答题：本大题共6小题，共70分. 17．（本题满分10分） 解：⑴ 41,311,211,142231121==+==+=∴=a a a a a a a a 猜想)(,1*∈=N n na n …………………………………………4分 ⑵ 111112233478S =++++⨯⨯⨯⨯ 111111117(1)()()()1223347888=-+-+-++-=-= ………10分18．(本小题满分12分)解：曲线C 的直角坐标方程为：直线0y - (6)分 （2）||1AB = …………………12分19．(本小题满分12分)(1) 要 证2>只要证222)>即 证而上式显然成立，故原不等式成立.…………………6分1:22=+y x C l（2）假设结论不成立，则112,2a bb a+<+<，所以114a bb a+++<，即11(2)(2)0a ba b+-++-<，即220+<，矛盾！故假设不成立，所以与中至少有一个不小于2.…………………12分20.(本题满分12分）解析：(1)由题意可得关于商品和服务评价的列联表：…………………4分(2)22200(80104070)11.11110.8281505012080K⨯⨯-⨯=≈>⨯⨯⨯，故可以认为在犯错误的概率不超过0．1%的前提下，商品好评与服务好评有关；…………………8分（3）若针对商品的好评率，采用分层抽样的方式从这200次交易中取出5次交易，则好评的交易次数为3次，不满意的次数为2次，令好评的交易为A，B，C，不满意的交易为a，b，从5次交易中，取出2次的所有取法为(,)A B，(,)A C，(,)A a，(,)A b，(,)B C，(,)B a，(,)B b，(,)C a，(,)C b，(,)a b，共计10种情况，其中只有一次好评的情况是(,)A a，(,)A b，(,)B a，(,)B b，(,)C a，(,)C b，共计6种，因此，只有一次好评的概率为63105= .…………………12分21．（本小题满分12分）证明:（1）取PD中点Q, 连EQ , AQ ,则12QE CD AB==//////QE CDCD AB QE ABQE AB⎫⎪⇒⎬⎪=⎭//ABEQ BE AQ⇒⇒四边形是平行四边形ba1+ab1+////BE AQAQ PAD BE PAD BE PAD ⎫⎪⊂⇒⎬⎪⊄⎭平面平面平面…………………6分(2) PA ABCD CD ABCD ⊥⎫⇒⎬⊂⎭平面平面//AQ PCD BE PCD BE AQ ⊥⎫⇒⊥⎬⎭平面平面 .（3）1112122BDC S AD DC ∆⨯⨯＝＝＝1133B PDC P BDC BDC V V PA S --∆＝＝＝.…………………12分22．（本小题满分12分）（Ⅰ）解：由题意可知，半椭圆方程为222214y x r r+= (0)y ≥∵2CD x =∴ 设C 点的横坐标为x ，则纵坐标y =∴ 221(22)22S r x r x =+-等腰梯形2(r x =+(0,)x r ∈…………………5分（II ） 解：∵ 2(S r x =+(0,)x r ∈ ∴ 22224()()S r x r x =+-令 222()()()f x r x r x =+- x ∈ ∴ 4334()22f x x rx r x r =--++ ∴ 323'()462f x x rx r =--+22()(2)x r x r =-+-CD PA CD AD AD PA A ⊥⎫⎪⊥⇒⎬⎪⋂⎭＝CD PAD AQ CD AQ PAD PA AD AQ PDQ PD CD PD D⊥⎫⇒⊥⎬⊂⎭⎫⇒⊥⎬⎭⋂平面平面＝为的中点＝⇒∴ 4max ()()216f x f r ==∴ 2max2S =…………………12分。