河北定州中学2017-2018学年第一学期高四第3次月考英语试卷第一部分：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. How much will the woman pay if she buys two skirts?
A. $18.
B. $19.
C. $20.
2. What will the speakers discuss?
A. A report.
B. A computer.
C. A report on computer.
3. What are the speakers talking about?
A. A child.
B. A room.
C. A present.
4. What can we learn from this conversation?
A. The woman does not get along well with the man.
B. The woman does not get along well with her roommate.
C. The man will talk with the woman's roommate.
5. Where are the two speakers now?
A. On the first floor.
B. On the fourth floor.
C. On the fifth floor.
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。每段对话或独白读两遍。
听第6段材料，回答第6至7题。
6. What was the woman doing before she went home?
A. Typing a report.
B. Rewriting a report.
C. Reviewing a report.
7. Where did the woman have her dinner?
A. In a restaurant.
B. In her office.
C. At home.
听第7段材料，回答8至9小题。
8. Why does the man feel surprised?
A. The woman has found a new job.
B. The woman doesn't feel like leaving.
C. The woman disagrees with him.
9. What does the woman say about her department?
A. There is a lack of trust.
B. There are serious problems.
C. There is too much pressure.
听第8段材料，回答10至12小题。
10. What are the speakers talking about?
A. Popular sports events.
B. TV programs people like best.
C. Things people do after work.
11. How did the woman do the research?
A. She talked to people.
B. She sent letters to people.
C. She collected information from newspapers.
12. What do most people do in their spare time?
A. Go to movies.
B. Read books.
C. Watch TV.
听第9段材料，回答13至16小题。
13. Where does this conversation take place?
A. At the airport.
B. In a restaurant.
C. On the street.
14. Why does the woman like San Francisco?
A. It has less traffic.
B. It has the best food and music.
C. People there are friendlier.
15. Where does the woman come from?
A. Pennsylvania.
B. San Francisco.
C. China.
16. What does the woman think of the man's English?
A. Excellent.
B. Acceptable.
C. Strange.
听第10段材料，回答17至20小题。
17. How many people are there in the woman's family?
A. Three.
B. Four.
C. Five.
18. What did the children think about having dinner together at home?
A. They thought it was funny.
B. They disliked the idea at first.
C. They preferred eating with friends.
湖北省黄冈中学2012届高三五月模拟试题 英语试题 命题人高三备课组 考试时间：2012年5月12日下午15：00—17：00 全卷满分150分。考试用时120分钟。 第一部分：听力（共两节，满分30分） 第一节（共5小题；每小题分，满分分） 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，并标在试题的相应位置。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。 has the man bought for his wife A. Tennis shoes. B. Music records. C. Nothing yet. 2. What is the man A. A seller. B. A writer. C. A publisher. 3. What is the weather like now A. Windy. B. Foggy. C. Sunny. does the man think of the woman’s worry A. It’s reasonable. B. It’s unnecessary. C. It’s unthinkable. 5. Where are the English teachers meeting A. In the teachers’ office. B. In the reading room. C. In the meeting room. 第二节 (共15小题；每小题分，满分分） 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，并标在席卷的相应位置。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，各个小题将给出5秒钟的作答时间。每段对话或独白读两遍。听第6段材料，回答第6至7题。 6. What kind of room does the man want A. A single room. B. A double room. C. Two single rooms. 7. When will the man leave the hotel A. On July 11th. B. On June 14th. C. On June 15th. 听第7段材料，回答第8至10题。 8. Who is the man A. A doctor. B. A driver. C. A passenger. 9. What is the trouble with the woman in the car A. She is going to give birth. B. She is suffering some disease. C. She has been hurt in an accident. 10. Where is the man now
【考试时间：2019年11月1日15:00—17:00] 绵阳市高中2017级第一次诊断性考试 英语 本试卷分为试题卷和答题卡两部分，满分150分，考试时间120分钟。 注意事项： 1.答题前，考生务必在答题卡上将自己的学校、班级、姓名用0.5毫米黑色签字笔填写清楚，同时用2B铅笔将考号准确填涂在“考号”栏目內。 2.选择题使用2B铅笔填涂在答题卡对应题目标号的位置上，如需改动，用橡皮擦擦干净后再选涂其它答案；非选择题用0.5毫米黑色签字笔书写在答题卡的对应框内，超出答题区域书写的答案无效；在草稿纸、试题卷上答题无效。 3.考试结束后将答题卡收回。 第一部分听力（共两节，满分30分） 回答听力部分时，先将答案标在试卷上。听力部分结束前，你将有两分钟的时间将你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并阅读下一小题。每段对话仅读一遍。 例：How much is the shirt? A. ￡ 19.15. B. ￡9.18. C. ￡9.15. 答案:C。 1.How will the speakers get home? A. By taxi. B. On foot. C. By bus. 2.What does the man think of the music? A. Exciting. B. Boring. C. Relaxing. 3.What will the man do tonight? A. Do some reading. B. Take a good rest. C. Go to a movie. 4.Why is the man late today? A.He forgot the time. B. He didn't set the alarm. C. He didn't hear the alarm. 5.What are the speakers doing? A.Having a meeting. B. Discussing work. C. Making an appointment.
II.Grammar and Vocabulary Section B Recently,I flew to Las Vegas to attend a meeting.As we were about to arrive,the pilot announced with apology that there would be a slight delay before setting down.High desert winds had forced the airport to close all but one runway.He said that we would be circling the city for a few minutes waiting to land.We were also told to remain in our seats meanwhile with our seat belts(21)________(fasten) because there might be a few bumps.Well,that few minutes turned into about forty-five minutes, including a ride that would make a roller coaster(22)________(pale)by comparison. The movement was so sudden(23)________several passengers felt sick and had to use airsickness bags.(24)________you might guess,that’s not good thing to happen in a narrow space because it only serves to increase the discomfort of the situation. About twenty minutes into the adventure,the entire airplane became very quiet.There was now a sense of anxiety and fear that could be distinctly noticed.Every passenger simply held on for dear life… (25)________one.A baby was having a good time!With each bump of the aircraft,he(26)________let out a giggle of happiness.As I observed this,I realized that he didn’t know he was supposed to be afraid and worried about his safety.He(27)________thought about the past nor about the future.Those are (28)________we grown-ups have learned from experience.He was enjoying the ride because he (29)________(not teach)to fear it.(30)________(understand)this,I took a deep breath and sat back into my seat,pretending I was really on a roller coaster.I smiled for the rest of the flight.I even managed to giggle once or twice,which is much to the chagrin of the man sitting next to me holding the airsickness bag. C Section People become quite illogical when they try to decide what can be eaten and what cannot be eaten.If you lived in the Mediterranean,for instance,you would consider octopus a great__31__.You would not be able to understand why some people find it repulsive.On the other hand,your stomach would__32__ at the idea of frying potatoes in animal fat---the__33__accepted practice in many northern countries.The sad truth is that most of us have been brought up to eat certain foods and we__34__to them all our lives. No creature has received more praise and abuse than the common garden snail.Cooked in wine, snails are a great luxury in various parts of the world.There are countless people who,ever since their early years,have learned to__35__snails with food.My friend,Robert,lives in a country where snails are despised.As his flat is in a large town,he has no garden of his own.For years he has been asking me to collect snails from my garden and take them to him.The idea never appealed to me very much,but one day,after a heavy__36__,I happened to be walking in my garden when I noticed a huge number of snails taking a stroll on some of my__37__plants.Acting on a sudden impulse,I collected several dozen,put them in a paper bag,and took them to Robert.Robert was delighted to see me and__38__pleased with my little gift.I left the bag in the hall and Robert and I went into the living room where we talked for a couple of hours.I had forgotten all about the snails when Robert suddenly said that I must stay to dinner. 第1页/共8页
湖北黄冈中学2019高三五月重点考试--英语 英语试题 考试时间：2018年5月12日下午15：00—17：00 全卷总分值150分。考试用时120分钟。 第一部分：听力〔共两节，总分值30分〕 第一节〔共5小题；每题1.5分，总分值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三个选项中选出最正确选项，并标在试题的相应位置。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.Whathasthemanboughtforhiswife? A.Tennisshoes. B.Musicrecords. C.Nothingyet. 2.Whatistheman? A.Aseller. B.Awriter. C.Apublisher. 3.Whatistheweatherlikenow? A.Windy. B.Foggy. C.Sunny. 4.Whatdoesthemanthinkofthewoman’sworry? A.It’sreasonable. B.It’sunnecessary. C.It’sunthinkable. 5.WherearetheEnglishteachersmeeting? A.Intheteachers’office. B.Inthereadingroom. C.Inthemeetingroom. 第二节(共15小题；每题1.5分，总分值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三个选项中选出最正确选项，并标在席卷的相应位置。听每段对话或独白前，你将有时间阅读各个小题，每题5秒钟；听完后，各个小题将给出5秒钟的作答时间。每段对话或独白读两遍。听第6段材料，回答第6至7题。 6.Whatkindofroomdoesthemanwant? A.Asingleroom. B.Adoubleroom. C.Twosinglerooms. 7.Whenwillthemanleavethehotel? A.OnJuly11th. B.OnJune14th. C.OnJune15th. 听第7段材料，回答第8至10题。 8.Whoistheman? A.Adoctor. B.Adriver. C.Apassenger. 9.Whatisthetroublewiththewomaninthecar? A.Sheisgoingtogivebirth. B.Sheissufferingsomedisease. C.Shehasbeenhurtinanaccident. 10.Whereisthemannow? A.Atahospitalnearby. B.IntheWashingtonTunnel. C.OntheLincolnExpressway. 听第8段材料，回答第11至13题。 11.Howlonghasthemanbeenill? A.SinceFriday. B.SinceSaturday. C.SinceSunday. 12.Howshouldthemantakethedoctor’smedicine? A.Twiceadaybeforemeals. B.Threetimesadayaftermeals.
四川省绵阳市2018届高三第一次诊断性考试 英语 第Ⅰ卷（选择题，共100分） 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。 例：How much is the shirt? A.￡19.15. B.￡9.18. C.￡9.15. 答案是C。 1.Who wants to borrow a camera? A.Mary. B.Jane. C.Alice. 2.What is the man doing? A.Attending an appointment. B.Discussing an agreement. C.Applying for a position. 3.Where are the two speakers talking? A.In a shop. B.In a bank. C.In a cinema. 4.How long did Eric stay abroad in all? A.9 days. B.11 days. C.16 days. 5.Why will Mr.Rogers be off work next week? A.To make his holiday. B.To attend a wedding. C.To travel on business. 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，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，各小题给出5秒钟的作答时间。每段对话或独白读两遍。 听第6段材料，回答第6、7题。
黄冈中学2019届高三5月第三次模拟考试英语 试题答案 听力材料 (Text１) M:You’ve been quiet since we left the theater.What’s the matter?Didn’t you like the movie? W:No.I’m tired of all that blood and people killing each other. M:Hold on!You saw how full the theater was.People like it. (Text2) W:Tim,I read your online article about animals.You really know a lot about them.You must read lots of books on them. M:Actually I like watching the Animal World program on TV.And I learn from it. (Text3) W:Could you please sign for a parcel for me this afternoon? M:Sure.Just give me your ID card.Oh,tell me where I’ll put your parcel. W:Just leave it on the table. (Text4) M:I’m home! W:Hi sweetie.Look!I’ve made apple pies,seafood salad and…What’s wrong?You don’t feel well?Or you don’t like the food? M:To be honest,I’m not hungry.I just had a hamburger and fries.I didn’t know you were making something. (Text5) W:If it is still this hot tomorrow,we may as well give up the idea of having a picnic in the afternoon. M:Oh,I don’t think it’ll last long.The forecast says it will be cloudy by mid-afternoon. (Text6) W:I really need to find a job now! M:So do I.Do you see anything good listed? W:How about this telephone sales job?You call people and try to sell them magazines. M:That sounds boring.And anyway,I’m not good at selling. W:Well,I am!I might check that one out.Oh,here’s one for you.An entertainment director assistant on a ship. M:That sounds fun.I love traveling,and I’ve never been on a ship. W:It says here you have to work every day while the ship is at sea.That’ll be tiring. M:That’s OK.I don’t mind working long hours if the pay is good.I think I’ll apply for it. (Text7) M:Which coffee maker do you think I should buy?This model is cheaper,but the one over there is of higher quality. W:If you buy a cheap one,you’ll just have to replace it after a short while,and that will cost you more in the long run. M:I think you’re right.I’ll go with the more expensive one.Oh look!It is on sale!I’ll get a20percent discount on it. W:Yes,it’s a bargain. M:Do you need more time or are you ready to head to the check-out line? W:Let’s go to the check-out line,because I still have to visit the gym today. (Text8) M:Tell me about the man you met on the weekend.What’s his name? W:Oh,it’s Craig.He was alright,I guess.He works so hard—he is a reporter and he also volunteers at a youth center.I really admire him.But... M:But…? W:He’s just too serious.I mean,all he wanted to talk about was politics and classical music.I really don’t like
第I卷（选择题，共100分) 第一部分听力（共两节，满分30分） 回答听力部分时，先将答案标在试卷上。听力部分结束前，你将有两分钟的时间将你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并阅读下一小题。每段对话仅读一遍。 例：How much is the shirt? A. ￡ 19.15. B. ￡ 9.18. C. ￡ 9.15. 答案是C。 1. What does the man think of driving? A. Difficult. B. Easy. C. Wonderful. 2. How would the woman go downtown? A. By bus. B. By taxi. C. By subway. 3. How much time does the man still have to get there? A. About 15 minutes. B. About 30 minutes. C. About 45 minutes. 4. Where are the speakers? A. In a hospital. B. In the woman’s house. C. In a drug store. 5. What is the relationship between the two speakers? A. Husband and wife. B. Mother and son. C. Doctor and patient. 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。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。每段对话或独白读两遍。听第6段材料，回答第6、7题。 6. Where does Alex take his piano lesson? A. Near the post office. B. In front of a theater. C. Beside a bank.
III. Reading Comprehension Section B Directions: 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. B Kettlebells do not hurt people. People do. A kettlebell will get your respect – the easy way or the hard way. Here is the easy way. 1. Get a medical clearance. Get clearance, especially from an orthopedist and a cardiologist. The latter is no joking matter, since kettlebell training can be extremely intense. 2. Always be aware of your surroundings. Find a training area with a non-slippery surface on which you are not afraid to drop a kettlebell. The area must be clear of objects you might trip over – including other kettlebells – or that you might hit with a kettlebell. There should be no people or animals in a radius where you could injure them. 3. Train barefoot or wear shoes with a flat, thin sole and room for the toes to spread. Training barefoot is superior for health and performance reasons. If you must wear shoes, wear Converse Chuck Taylors, Vibram Five Fingers, or similar shoes that have thin soles and do not pinch the toes together. You have sensory receptors on the bottoms of your feet that make you stronger and improve balance and coordination. Wearing traditional shoes diminishes the ability of these receptors to work properly, and therefore inhibits performance and can increase the risk of injury. Go native. 4. Never contest for space with a kettlebell. Do not try to save a rep that has gone wrong. Guide the kettlebell to fall harmlessly, and move out of the way if necessary. And remember, quick feet are happy feet. 5. Practice all safety measures at all times. Respect every kettlebell, even the lightest one. Always use perfect form picking up and setting down a kettlebell. The set is not over until the bell is safely parked.
湖北省黄冈中学2009年秋季高三期末考试 英语试题 评析人：黄冈中学教师祁珊 全卷满分150分，考试用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。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。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。 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，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秒钟的时间作答。每段对话或独白读两遍。 1．What was the forecast for today’s weather? A．Cold. B．Windy. C．Warm. 2．How did the woman want to go to the zoo at first? A．By bus. B．By taxi. C．On foot. 3．What’s the man probably? A．A building designer. B．A director. C．A photographer. 4．Why didn’t the woman get the job? A．She hasn’t got any professional experience.
B．She doesn’t write well enough. C．She didn’t perform well in the interview. 5．How many people were on the spot all the time? A．One. B．Two. C．Three 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，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秒钟的时间作答。每段对话或独白读两遍。 听第6段材料，回答第6至8题。 6．Why does the woman think that New York is the only place to live in? A．It’s not only interesting but also quiet. B．It offers a colourful and exciting life. C．It has a large population. 7．How does the man think of his place? A．Interesting. B．Noisy. C．Boring. 8．Where is the woman now? A．New York. B．New Zealand. C．The United States. 听第7段材料，回答第9至11题。 9．Who supported the woman financially for her study at nurse school? A．The woman herself.
绵阳市高中2014级第三次诊断性考试英语试题 第I卷（选择题，共100分） 第一部分听力理解（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。答案写在答题卡上。 例：How much is the shirt? A. ￡19.15 B. ￡9.18 C. ￡9.15 答案是C。 1.What is the woman’s favourite sport? A. Basketball B. Badminton C. Tennis 2. What are the speakers talking about? A. Having a birthday party B. Doing some exercise C. Getting Jack is gift 3. Where does the conversation take place? A. In a bookstore B. In a library C. In a supermarket 4. What is the woman going to do next weekend? A. Go to a party B. Stay at home C. Visit her grandparents 5. What does the man suggest the woman do? A. Visit her neighbors B. Move to his town C. Join a neighborhood social club 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。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。每段对话或独白读两遍。听第6段对话，回答第6至7题。 6. What is the best season to visit Spain? A. Spring B. Summer C. Autumn 7. Why is train travel getting more popular in Spain? A. Its speed gets improved B. It is more comfortable C. It makes people more relaxed 听第7段材料，回答第8至9题。 8. How far did they walk every day during the trip? A. 5 kilometers B. 10 kilometers C. 15 kilometers 9. What problem did they have? A. There wasn’t enough oxygen sometimes B. They didn’t have modern equipment C. They couldn’t walk freely in the mountains 听第8段材料，回答第10至12题。 10. What’s the probable relationship between the two speakers? A. Colleagues B. Friends C. Roommates 11. What does the man think of his new job?
2018-2019学年上海中学高三第一学期摸底考试 II.Grammar and Vocabulary 温馨提示：多少汗水曾洒下，多少期待曾播种，终是在高考交卷的一刹尘埃落地，多少记忆梦中惦记，多少青春付与流水，人生，总有一次这样的成败，才算长大。高考保持心平气和，不要紧张，像对待平时考试一样去做题，做完检查一下题目，不要直接交卷，检查下有没有错的地方，然后耐心等待考试结束。 Section A Direction: Beneath each of the following sentences there are four choices marked A, B, C and D. Choose the other answer that best completes the sentence. 25.While I was waiting to enter ________ university, I saw advertised in a local newspaper a teaching post at a school in ________ suburb of London. A. /, a B. an, a C. a, the D. the ,the 26.In most cases, ________ a passenger has his ticket and managers to catch his train, he can reach his destination more comfortably than ________ he had to drive himself. A. once, if B. that ,if C. when, while D. where, when 27.The invention of the modern computer is one of the great contributions ________ to man’s efficiency. A. having ever been made B. ever been made C. ever made D. having ever made 28.I was not able to work out the problem ________ my teacher explained it. A. as B. unless C. until D. when 29.For him to be re-elected, what is essential is not that his policy works, but ________ the public believe that it does. A. / B. whether C. that D. if
南模中学高三三模数学试卷 2019.05 一. 填空题 1. 若集合{|310}A x x =+>，{||1|2}B x x =-<，则A B =I 2. 若复数z 满足 1i i z -=-，其中i 为虚数单位，则z = 3. 若函数1 ()1f x x =+（0x >）的反函数为1()f x -，则不等式1()2f x ->的解集为 4. 试写出71 ()x x -展开式中系数最大的项 5. 若函数4y =a ，最大值为b ，则2lim 34n n n n n a b a b →∞-=- 6. 已知平面上三点A 、B 、C 满足||AB =u u u r ，||BC =u u u r ||CA =u u u r ，则 AB BC BC CA CA AB ?+?+?u u u r u u u r u u u r u u u r u u u r u u u r 的值等于 7. 设P 是曲线tan x y θθ?= ???=? （θ为参数）上的一动点，O 为坐标原点，M 为线段OP 的中 点，则点M 的轨迹的普通方程为 8. 在等差数列{}n a 中，首项13a =，公差2d =，若某学生对其中连续10项进行求和，在 遗漏掉一项的情况下，求得余下9项的和为185，则此连续10项的和为 9. 从集合{1,2,3,4,5,6,7,8,9,10}A =中任取两个数，欲使取到的一个数大k 于，另一个数小 于k （k A ∈）的概率为 2 5 ，则k = 10. 已知数列{}n a 的通项公式为(1)2n n n a n =-?+（*n ∈N ），则这个数列的前n 项和为 n S = 11. 已知函数1 ()f x x x =- ，数列{}n a 是公比大于0的等比数列，且61a =， 1239101()()()()()f a f a f a f a f a a +++???++=-，则1a = 12. 定义在R 上的奇函数()f x ，当0x ≥时，1 2log (1)[0,1)()1|3|[1,) x x f x x x +∈??=??--∈+∞?，则关于x 的 函数()()F x f x a =-（01a <<）的所有零点之和为 （结果用a 表示） 二. 选择题 13. 已知非零向量a r 、b r ，“函数2 ()()f x ax b =+r r 为偶函数”是“a b ⊥r r ”的（ ）条件 A. 充分非必要 B. 必要非充分 C. 充要 D. 既不充分也不必要