四川省成都市师大一中2018-2019学年八年级上册英语半期考试
A卷（选择题：共100分）
第一部分听力略（共30分）
第二部分基础知识运用（共40分）
六、选择填空（共15小题，计20分）
A. 从以下各题的A、B、C三个选项中选择正确答案。（共10小题，每小题1分；计10分）
31. --- How do you feel about your vacation?
--- I had _______ enjoyable time.
A. a
B. the
C. an
32. --- _______ do you think of sitcoms?
--- I don't mind watching them.
A. What
B. How
C. Why
33. It's too noisy here. Let's find a _______ place.
A. quieter
B. cleaner
C. smaller
34. Mary is a funny girl, because she always makes us _______. All of us want to make friends with her.
A. to laugh
B. laugh
C. laughing
35. Don't worry. There is still _______ time to get ready for the performance.
A. few
B. little
C. a little
36. There is _______ important in today's newspaper. It isn't necessary to spend much time on it.
A. everything
B. nothing
C. something
37. Teachers always say that you can get good grades _______ you listen to them carefully in class.
A. as much as
B. as long as
C. as well as
38. --- Do you mind if I talk _______ in the museum?
--- Of course. It will make others uncomfortable.
A. quietly
B. clearly
C. loudly
39. She found reading books is _______ for her. She keeps reading every night.
A. interesting
B. difficult
C. boring
40. --- Is peter the tallest in his class?
--- _______. Nobody else is taller than him in his class.
A. Yes, he is
B. No, he isn't
C. I don't know
B. 补全对话。根据对话内容，从下边方框中选出适当的选项补全对话，并将选项的编号依次填入题号后横线上。（共5小题，每小题2分；计10分）
A: Excuse me. Can Iaskyou some questions?
B:Sure.
A: What do you do in your free time？
B:____41____
A: What kind of TV shows do you usually watch？
B: Soap operas. ____42____
A: But I think watching news is more meaningful than soapoperas. ____43____
B: No，I don't. ____44____
A: How about movies？Do you watch movies？
B: Yes，sometimes I go tothe movies with my classmates.It's relaxing.
A:____45____
B: You're welcome.
七、完型填空。分别通读下面两篇短文，根据短文内容，从A、B、C三个选项中选出可以填入空白处的最佳答案。（共15小题，A篇每小题2分；B篇每小题1分；计20分）
A
A famous symbol in American culture is a cartoon animal Mickey Mouse. Mickey first ____46____ in a cartoon in New York in1928. Walt Disney was the father of Mickey. He made lots of cartoons with Mickey. Many people around the world love this mouse with two large and round ears. He was popular because hewas like a common man, and he ____47____tried to face any danger and solve the problems by ____48____. In Disney's early movies, Mickey was ____49____. He lost his house and his girlfriend, Minnie. However, he was never afraid of the problems and always won at last. Now Mickey Mouse is still one of the ____50____ cartoon characters in the world because everyone knows him well.
46.A. appeared B. created C. served
47.A. never B. sometimes C. always
48.A. myself B. himself C. herself
49.A. unfriendly B. successful C. unlucky
50.A. most beautiful B. most famous C. most talented
B
Friends are very important in our life. Everyone needs friends, and we all like to feel close to someone. Jack is my best friend. We met in a chess club three years ago. We ____51____ like playing chess and we usually play chess together after school. We also like reading books about ____52____, so we often talk about the days of our past. We also ____53____ going to the movies. We go to the movie theater ____54____ a week, on Friday evening or Sunday afternoon. Though we have many things ____55____, there are some differences between us. I like ____56____ ball games and I'm on the school basketball team. But Jack has little interest in sports. He is ____57____ in music. He plays the piano very well and won lots of ____58____ in the competitions. As for schoolwork, he is ____59____ than me. He is better at English and he always helps me with my English. So sometimes I help him improve his math. What should good friends be like?As far as I know, good friends should ____60____ each other, just like an umbrellain the rain and a warm coat in the snow.
51. A. both B. all C. none
52. A. Chinese B. math C. history
53. A. mind B. enjoy C. stand
54. A. once B. twice C. three times
55. A. in need B. in fact C. in common
56.A. kind of B. a kindof C. all kinds of
57.A. talented B. rich C. strict
58. A. games B.prizes C. roles
59. A. more outgoing B. more useful C. more hard-working
60. A. find out B. make up C. care about
第三部分阅读理解（共15小题，计30分）
八、阅读下面短文，根据短文内容判断句子正误，正确涂“A”错误涂“B”。（共5小题，每小题2分；计10分）
Liu Wei is very famous in China because he can play the piano with his toes(脚趾).
One day when Liu Wei was only 10 years old，he played a game with some friends. He lost both his arms because of electricity(电).
Liu Wei was very sad when both his arms were cut off after the accident(事故). But soon he had to make a choice.
"For people like me，there were only two choices. One was to forget all the dreams，which would make me have a quick death. The other，was to work hard withoutarms to live an excellent life." says Liu Wei.
Liu's dream was to be a pianist. His excellent life included a show on China's GotTalent and a wonderful show playing the beautiful. Marriage D'amour with his twofeet on the piano.
Liu Wei learned to play the piano with his feet. And teaching himself to play the piano with his feet was very hard.Many times he wanted to give it up, but his parents went on encouraging(鼓励)him and he wanted to make his parents happy.
Maybe you can not believe that Liu Wei is able to play well only with his toes. The audience(观众)were truly touched and very excited when they watched hisshow.
61. Liu Wei was famous for playing the piano withhis toes.
62. Liu Wei lost his arms at the age of ten.
63.Liu Weidecided to forget his dreams after his arms were cut off.
64. It's easy to learn to play the piano with his feet at the beginning.
65.The passage mainly tells us the importance of talents.
九、阅读下面两篇短文，根据短文内容选择正确答案。（共10小题，每小题2分；计20分）
A
Lu Lu is agirl in Chengdu and she keeps writing some messages on her Sina Weibo. The following is her first message to her mom in June, 2018, just about one week after her mother died.
keeps writing the message on her Weibo for almost one year. She wrote about 1,200 messages and got 86,583 fans.
she also said she was happy that her micro blog helps more peopleunderstand family is very important to everyone. She hopes young people can spend more time with her parents and it's never late to understand the importance of family. Ir's the most important thing in our life.
66. Why did Lulu dream about her mother？
A. She wanted to bring her mother back.
B. She missed her mother very much.
C. She wanted to have birthday party for her mother.
67. What does Lulu's mother think of chocolate？
A. She can't stand it.
B. She loves it.
C. She doesn’t mindi t.
68.Lulu started her micro blog because_______.
A.She wanted to show her love for her mother.
B. She wanted to touch others'heart.
C. She wanted to be famous onthe Internet.
69.What did the netizensthink of Lulu?
A. Mary thinks Lulu is talented in writing the stories.
B.Lisa thinks Lulu is lucky to have a good mother.
C.Peter thinks messages online touched her heart.
70.What can we learn from the passage?
A.Lulu hoped people could spend more time on their favorite things.
B.Lulu thought nothing was more important than the family.
C.Lulu felt tired to write the messages about her mom on weibo.
B
When Jonson was 13，he left Jamaica to live with his family. ButJohnson started to have problems with food in the US. He said he didn't like the chicken. Johnson also found that his family really liked the cheap fast food that seems to be everywhere.
Worrying about his family's health. Johnsonjoined Grow Hartford. Thisisa youth program that grows vegetables in city farms and calls for freshhealthy food. Five years later, Johnson quickly became a top youth leader. He did workshops for different groups educating people about the importance ofhealthy food.
He also gave some advice to school that students need more tastes and eat different kinds of school lunches. Students would enjoy the different tastes of junk food. The school accepted（接受）his advice. He was also called the youth winner of the 2018 Hartford Community Food Security Award because of his great work.
71. _______made Johnson so worried when he came to the Us.
A. Money
B. Food
C. Classmates
72. Grow Harfordis _______.
A.the name of the farm
B. the name of the city
C. the name ofthe program
73. What did he find out in most stores after he lived with his family?
A.The cheap fast food.
B.The delicious healthy foot.
C.The expensive healthy food.
74.How did Johnson help the school to make the food better?
A.He grew vegetables and fruits in city farms.
B.He gave the school some advice about the food.
C.He taught people about the importance of healthy food.
75.What does the writer think of the things Johnson did?
A.Interesting
B.Meaningful
C.Boring
B卷（计50分）
一、根据短文内容和首字母提示填空，使文章意思完整。每空一词。（共5小题，每小题1分；计5分）
1.Parents always want their kids to be better than other ones. So the c__________ start at very youngages.
2.Jane decided to walked up to penang Hill. U__________，it rained hardso she had to take the bus instead.
3.Vera p__________ to watch a soap opera that night but she was too busy to do that.
4.Peter hopes to lose weight by doing more exercise and having a healthier diet. It seems that he looks t__________ than before.
5.The early bus is always very c__________ because it's always full of people going to work or going to school.
二、完成对话，在对话空格中填上适当的单词，使对话完整正确，一空一词（含缩写词）。（共10小题，每小题1分；计10分）
A:Hi, Jason. Do you know anything about the closing ceremony（闭幕式）of the school sports meeting lastweek?
B:Sure. I watched it from the beginning to the end.
A:What do you think of it?
B:Can't be more exciting. I still can't forget the wonderful shows the most talented _____1_____ in our school gave us. And they truly gave us many exciting shows.
A:I am sorry I _____2_____ the shows on that day.
B:How come? The school makes the rule that each of students must take part in the sports meeting.
A: That's _____3_____ I ran very quickly in the running race and fell down by accident（意外）. Then the school doctor sent me to the hospital right away. Then I was not clear about what _____4_____ next.
B:I am sorry to hear that. But don't worry,because I could share some pictures with you later. By the way,how are you feeling now?
A:Much better. I can walk a little myself now. And do you know who was the _____5_____ in the running race?
B:Bill got the first place. And I also know he got some sports things as _____6_____.
A:Sounds great! I can't stop thinking if didn't hurt myself, I could compete with him. You know both of us are talented in running.
B:Come on, buddy. I know you treated the sports meeting pretty _____7_____ before you decided to show yourself
in the sports meeting,but nothing can be changed now,so forget about it.
A: Saying is _____8_____ than doing. I practiced very hard in the day.And my parents, teachers and my classmates also _____9_____ too much of me. I feel greatly sorry to make them disappointed（失望).
B:Come on, Greg. The results of the competition don't seem so important as you thought. Most importantly, everyone knows that you are always ready to try your best and be a good _____10_____ for us to learn from.
They will be proud of you.
A: What you said really touches my heart. Thank you so much!
B:It's nothing.
三、短文填空。用下面方框中的适当形式填入短文空格内，使短文意思正确，通顺（每词限用一次）。（共10小题，每小题1分；计10分）
Last Friday, I called a taxi. When I got into it, I was busy _____1_____ for something in my bag so I didn't notice the driver. Just said, "please go right now! I am very busy."
She answered with a beautiful smile, "Yes, madam!"
I got a _____2_____ that I heard a beautiful woman voice. I looked up at the driver. That was a lady of about thirty. I took the taxi for many times, it was my first time to see a woman driver.
She was driving pretty well and I was sitting _____3_____ in the taxi. I looked around, it was clean and full of nice smell. Then I had my eye on the driver _____4_____. She was dressed in a nice skirt with clean straight hair.
I was wondering why such a young lady liked this job, so I started a talk. "Do you mind me _____5_____ you some questions?"
"Yes, madam. No problem."
I guess you must get good education, right?
"Yes, madam. I just finished my MBA course."
"Oh, wow! I want to know why you _____6_____ this job. Why didn't you go for a business at that time?"
I could see her face in the front mirror. She smiled and told me why.
"To get _____7_____ education means to have more chances to choose," she said, "I choose a job to bring me happiness. I was very interested in driving when I was a little child. Yes. I got offers（录用信）from many of big companies but I liked this one best. I don't really care if a job is good enough in _____8_____ eyes. I can't get much
money from this job, I love driving, though. Most importantly, I made my childhood’s dream come true. That's it !"
Yes! if one day she doesn't want to drive a taxi any longer, she can also easily find another job _____9_____. A good education means having more chances to choose. This is the _____10_____ lesson in my life taught by this young lovely lady.
四、阅读表达。（共10小题，每题1分，计10分）
A.根据短文内容，从短文后的选项中选出适当的选项补全短文。（共5小题，每小题1分；计5分）
For me, one ofthe greatest happiness in life is to watch a great movie at t he movie theater. It’s a chance for meto get away from real life. There's nothing better than being lost in a story. _____1_____.
To start with, some people always appearlate, so you haveto rise fromyour seat to make them get past. Then, when you want to enjoy the surround-sound effects（环绕声效果），someone begins to enjoy their drinks and their popcorn. It makes a lot of noises to make you feel terrible when watching movies. _____2_____.
Sometimes it's not even about the movie. _____3_____. Simon Mayo, a movie reporter at the BBC, experienced a "new low" during a movie. He says "the woman in front of me gets the phone out, and then has an app on her phone which turns her phone into a mirror". Then her friend got a phone out and used the light to let her do her make-up!
Simon helped to create a lot of rules for how people should behave（表现）at the cinema. _____4_____. And another is not to take your shoes off. It's very terrible!
Of course, when we pay for a ticket, we feel we can do whatever we like to relax and enjoy the movie in the way we want to,but we mustn't forget we are just common people who like watching movies. _____5_____. But we all know the best way to enjoy the movie is on the big screen.
B.阅读短文，根据其内容，完成表格中所缺信息，将答案按编号依次填入表格内的题号后。（共5小题，每小题1分；计5分）
Just like rice and noodles are not the same as bread, snacks（零食）in China are also not the same as those in the UK and the US. For one thing, I never imagined that sunflower seeds would be so popular here. I saw people having them when waiting for tables outside restaurants, before dinner and,of course, when watching TV. I also saw that a plate of sunflower seeds is always on offer during the spring Festival. It seems that you can see them eat sunflower seeds at any time and any place.
I hardly tried sunflower seeds when I came to China. In the UK, though, young people love their snacks. In fact,young people in Britain eat more snacks than people of the same age in other European countries. A survey showed that 64 percent of under 20-year-olds snack between meals, according to an article on the British Council website. In comparison（对比）, 58.7 percent of young people snack in Germany, 53 percent in France, and only 40.7 percent in Spain.
British snacks are usually unhealthy. Our favorites are probably potato chips, which we call crisps, and chocolate bars. From a very young age, we always expected to get our crisps and chocolate bars after school, perhaps even included with sandwiches and fruit in our school lunches that our parents made for us.
Snacks are also popular in the US. One of the things that I found the most special when I first visited the US was the number of snacks in their supermarkets, I was surprised to find huge aisles（过道）just for snacks that were bigger than some stores I'd been to in the UK. Snack tastes in the US are much the same as those in the UK, but there are much more choices—Everyone can get every kind of fatty, sugary food all the time.
All in all, snacks may be different from those in other countries, but people's opinions about snacks are very similar in one side. It's probably best for your health if you like sunflower seeds instead of potato chips and chocolate. But eating these delicious snacks at times couldn't be wrong, could it?
1.__________
2.__________
3.__________
4.__________
5.__________
五、书面表达（计15分）
昨晚是“Singer”的决赛之夜。Jessie.J赢得了2018年“歌手”唱歌比赛的年度总冠军。昨晚她的好朋友Co Co李玟也前来助唱。请根据提示信息完成文章。
要求：
1.根据提示，任选两条表达Jessie.J和CoCo的相同之处和不同之处；
2.自由阐述Jessie.J能够获得冠军的原因，如唱得最动听……（两项）；
3.陈述你对《我是歌手》这档综艺节目的喜好和看法;
4.作文要点齐全，开头已经给出，书写工整，逻辑严密，句意通顺；字数80词左右。
Jessie. J won the first place on the final show of Singer last night, and her best friend CoCo also appeared to help her win the competition.
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四川省成都市师大一中2018-2019学年八年级上册英语半期考试参考答案
选择填空
31-35 CAABC 36-10 BBCAA
补全对话
41-45 BECAD
完形填空
46-50 ACBCB 51-55 ACBAC 56-60 CABCC
阅读理解
61-65 AABBB 66-70 BCACB 71-75 BCABB
首字母填空
1. competitions
2. Unluckily
3. planned
4. thinner
5. crowded
完成对话
1. performers
2. missed
3. because
4. happened
5. winner
6. prize(s)
7. seriously
8. easier
9. expected 10. example
十二选十
1. looking
2. surprise
3. comfortably
4. again
5. asking
6. chose
7. better
8. others’
9. herself 10. most educational 六选五
ECBAF
完成表格
1. different snacks
2. to play a role
3. the most snacks
4. few choices
5. similarly/ in one side
四川省成都市2016-2017年师大一中（初一上）半期考试卷姓名：__________ 考号：__________ 英语 注意事项： 1.全卷分为A卷和B卷，A卷满分100分，B卷满分50分；考试时间120分钟。 2.在作答前，考生务必将自己的姓名，考号及班级涂写在试卷和答题卡规定的位置。考试结束后，监考人员将答题卡收回。 3.选择题部分必须使用2B铅笔填涂；非选择题部分必须使用0.5毫米黑色签字笔书写，字体工整、笔迹清楚。 4.请按照题号在答题卡上各题目对应的答题区域内作答，超出答题区域书写的答案无效；在草稿纸、试卷上答题均无效。 5.保持答题卡清洁，不得折叠、污染、破损等。 A卷（共100分） 第一部分听力（共30小题；计30分） 一、听句子，根据所听到的内容选择正确答语。每小题念两遍。（共6小题，每小题1分；计6分） 1. A. Good evening. B. Thanks. C. And you? 2. A. Black. B. OK. C. Mr. Black. 3. A. They’re fine. Thanks. B. Yes, they are. C. He’s my grandpa.. 4. A. Yes. They are his. B. No, they aren’t. C. Yes, it is. 5. A. It’s red. B. It’s hers. C. It’s on the sofa.
6. A. He’s my uncle. B. It’s my pen. C. She’s my aunt. 二、听句子，选择与所听句子相符的图片，并将代表图片的字母填涂在答题卡的相应位置。每小题念两遍。（共4小题，每小题1分；计4分） A B C D 7.________ 8. ________ 9. ________ 10. ________ 三、听对话，根据对话内容及问题选择正确答案。每小题念两遍。（共10小题，每小题1分；计10分） 11. A. It’s white. B. It’s blue. C. It’s black. 12. A. Cindy. B. Sally. C. Helen. 13. A. The keys. B. The books. C. A and B. 14. A. 358-1467. B. 524-3389. C. 356-1467. 15. A. The notebook. B. The eraser. C. The tape. 16. A. It’s in the bag. B. It’s on the bed. C. It’s under the bed.. 17. A. Ms. Wang. B. Mr. Wang. C. Mike and Tom. 18. A. Pencils. B. Pens. C. A watch and an ID card. 19. A. Paul’s sister. B. Sally’s sister. C. Sally’s friend.
3 3 3 3 师大一中真卷（二） （时间：60 分钟，满分：120 分） 一、选择题（每小题 3 分，共 30 分） 1、估计下面算式的结果，最大的是（ ） A. 774 ?? 1+ 1 ? B. 774 ?? 1- 1 ? C. 774 ÷? 1+ 1 ? D. 774 ÷? 1- 1 ? ? ? ? ? ? ? ? ? ? ? ? ? 2、李明拿了等底等高的圆锥形和圆柱形容器各一个，他将圆柱形容器装满水后，倒入圆锥形容器，当水全部倒完时，发现从装满水的圆柱形容器内溢出 36.6 毫升水，这时圆锥形容器内有（ ）毫升水。 A.109.8 B.18.3 C.12.2 D.24.4 3、在 250 克的浓度为 40%的盐水中只要加入（ ）克水，浓度就变成了 25% A.100 B.150 C.350 D.400 1 1 1 4、两根同样长的绳子，第一根先截去全长的 ，再截去 米，第二根先截去 米，再截去 5 5 5 1 余下的 。两根剩下的绳子比较（ ） 5 A.第一根长 B.第二根长 C.一样长 D.无法确定 5、幼儿园老师给小朋友们分糖，如果每人分 7 颗还差 6 颗，如果每人分 6 颗则多出 7 颗。那么共有糖果（ ）颗。 A.85 B.84 C.83 D.82 2 3 6、一部滑动的电梯从一楼到二楼需要 分钟，一个人步行从一楼到二楼需要 分钟，如果 3 4 这个人在运行的电梯上从一楼到二楼需要（ ）分钟。 1 1 17 6 A. B. C. D. 2 12 12 17
1 7、如果客车的速度比货车的速度快，货车行驶的时间比客车行驶的时间多25%，那么客 3 车行驶的路程与货车行驶的路程的比是（） A.5:3 B.5:4 C.16:15 D.15:16 3 3 3 8、有甲乙两根绳子，从甲绳上剪去全长的，余下的绳子再接上米；从乙绳上先剪去 4 4 4 3 米，再剪去余下绳子的，这时两根绳子所剩下的长度相等。原来两根绳子比较， 4 （）。 A. 甲绳长 B.乙绳长 C.同样长 D.不能确定哪根长 9、小明在电脑上制作了如图所示的一长串符号，其中○表示白色，●表示黑色，●● 表示 红色，●●● 表示蓝色，●●●● 表示绿色，●●●●● 表示紫色，然后全部进行复制，则第 2008 个符号的颜色是（）。 ○●○●● ○●●● ○●●●● ○●●●●● ··· A. 红 B.白 C.绿 D.蓝 10、六（1）班有48 人，其中26 人参加数学竞赛，24 人参加作文竞赛，12 人两项都参加了，有（）人两项都没有参加。 A.13 B.12 C.10 D.4 二、填空题（每小题4 分，共32 分）
四川省成都七中实验学校2020学年八年级英语下学期期中试题（无答案）人 教新目标版 第一部分听力测试（共25小题，计25分） 一、听句子，根据所听到的内容选择正确答语。每题读两遍。(共6小题，每小题l分；计6分) ( ) 1. A. Yes, please. B. Thanks. C. You are amazing. ( ) 2. A. I’d love to go. B. No problem. C. Either is OK. ( ) 3. A. Have a good time. B. Be careful! C. See you! ( ) 4. A. Let’s go home. B. I have no idea. C. You’d better take a raincoat. ( ) 5. A. You are welcome. B. Nothing serious. C. No, thanks. ( ) 6. A. It’s 5 d ollars. B. Yes, I am. C. No, I didn’t. 二、听句子，选择与所听到的句子内容相符的图片，并将代表图片的字母填在相应的题号后。每 题读两遍。(共4小题，每小题 1分；计4分) 7. 8. 9. 10. 三、听对话，根据对话内容及问题选择选择正确答案。每题读两遍。 (共10小题，每小题l分；计10分) ( ) 11. A. She has a fever. B. She is ill in hospital. C. She is too tired. ( ) 12. A. English. B. Physics. C. Math. ( ) 13. A. Hamburgers. B. Dumplings. C. Noodles. ( ) 14. A. For two week s. B. For three weeks. C. For four weeks. ( ) 15. A. At a hotel. B. At a cinema. C. At an airport. ( ) 16. A. 55. B. 45. C. 35. ( ) 17. A. A dictionary. B. An MP4. C. A camera. ( ) 18. A. His uncle. B. His grandfather. C. His cousin. ( ) 19. A. It is broken. B. It is lost. C. It runs out of ink. ( ) 20. A. 1.5 meters. B. 1.4 meters. C. 1.35 meters. 四、听短文，根据短文内容选择正确答案。短文读两遍。(共5小题，每小题l分；计5分) ( ) 21. How many people are going to have a trip in the family? A. Four. B. Five. C. Six. ( ) 22. Why won’t his father come along with them? A. He is ill. B. He is too old. C. He is busy. ( ) 23. How will they go to Europe? A. By ship. B. By plane. C. By train. ( ) 24. Which country won’t they go this time? A. The UK. B. Japan. C. Italy. ( ) 25. How long will they stay in Europe? A. 10 days. B. 14 days. C. 21 days. 第二部分基础知识运用（共40小题，计40分）
2018年四川成都师大附属中学初一上月考语文试题 全卷满分100分，考试时间90分钟。 注意事项： 1．答题前，考生务必将自己的学校、班级、姓名、考室、考号等事项完整填写在答题卡的密封线内。考试结束、监考人员只收答题卡。 2．考生领取试卷、答题卡后，请检查试卷、答题卡数量、总页数及印刷质量，若存在问题，马上更换。 一、语言知识和语言表达。（16分） （一）基础知识（每小题2分，共8分） 1．下列词语中加粗字的注音完全正确的一项是（） A．嗡嗡（wēng）酝酿（liǎng）应和（hè）呼朋引伴（yǐn） B．慈善（cí）澄清（chéng）棱镜（líng）咄咄逼人（duō） C．草垛（duò）黄晕（yùn）静谧（mì）菜畦（qí） D．粗犷（kuàng）莅临（lì）吝啬（lìn）绿茵茵（yīn） 2．下列句子书写完全正确的一项是（） A．对于一个刚由伦敦回来的人，像我，冬天要能看得见日光，便觉得是怪事；济南的冬天是晌晴的。 B．舒活舒活筋骨，抖擞抖擞精神，各做各的一份事去。“一年之计在生于春”，刚起来头，有的是工夫，有的是希望。 C．古老的济南，城内那么狭窄，城外又那么宽敞，山坡上卧着些小村庄，小村庄的房顶上卧着点儿雪。 D．但它变得更吝啬了。它既不倾盆瓢泼，又不绵绵如丝，或淅淅沥沥，它显出一种自然、平静。 3．下面句子加粗的词语使用错误的一项是（） A．面对红军战士的咄咄逼人，敌人只能选择缴械投降，无力再作任何反抗。 B．只有防患未然，才能真下地保障工人的人身安全和工程的顺利进行。 C．他每天早起十分钟，利用这个时间将课本中的古诗背得滚瓜烂熟。 D．祖母去世的消息，无异于一个晴天霹雳，让他一时间不知如何是好。 4．下列句子中，没有语病的一项是（） A．在成都市教育局的热情邀请下，诗人郑愁予远道而来，与成都教师共享文学之乐。B．随着我市“阳光体育活动”的广泛开展，同学们的身体素质得到极大的改善。 C．受“厄尔尼诺”现象影响，黄河流域干旱严重，专家预测小麦将减产大约30%左右。D．为了避免受打扰的事情不再发生，金庸先生闭门谢客，低调地度过了92岁生日。 （二）语言运用（8分，每小题4分） 5．师大一中七年10班举行“新同学·新朋友”的综合性学习活动，请你一起参与。 （1）为了这次活动，班级准备出一期“新同学·新朋友”的黑板报，其中两个版块的小标题是：“名人友谊故事”，“交友名言警句”，请你再设计拟写两个版块的小标题。（4分）
八年级英语参考答案 A卷 (选择题共100分) 听力测试（30分）： 1-5 ACBAB 6-10 EBDAC 11-15 CBBCA 16-20 BACBA 21-25 BCACC 26. Neighborhood 27. less 28. Across from 29. the best service 30. fresh 单项选择（20分）： 31—35 BBCAC 36—40 ABCAC 41—45 EACBD 说明：31-40每小题1分；41-45每小题2分，见错不给分。 完形填空（20分）：46—50 ABBCA 51—55 CBCAC 56—60 ABCCB 说明：46-50每小题2分；51-60每小题l分，见错不给分。 阅读理解（30分）：61—65 BABAB 66—70 ACBAB 71—75 AABCA 说明：以上各题每小题2分，见错不给分。 B卷 (非选择题共50分) 一、首字母填空（5分）： 1. dislikes 2. online 3. theater 4. necessary 5. appeared 说明：以上各题每小题l分，填对词给0．5分，形式正确再加0．5分。 二、完成对话（10分）： 1. interest 2. for / happened 3. hardly 4. closer 5. friendliest 6. comfortably 7. Sounds 8. How 9. broke 10. excitement 说明：以上各题每小题l分，填对词给0．5分，形式正确再加0．5分。 三、短文填空（10分）： 1. winner 2. beautifully 3. surprised 4. deciding 5. seriously 6. talented 7. practiced 8. herself 9. successful 10. meaningful 说明：以上各题每小题l分，选词意思正确给0．5分，形式正确再加0．5分。 四、阅读表达（10分）： A. 补全短文 1-5 CDAFB 说明：每小题l分，见错不给分。 B. 完成表格 1. Differences 2. the same 3. as popular as 4. less serious 5. more than 说明：每小题l分，每空意思正确给0．5分，形式正确再加0．5分。 五、书面表达（15分）： 1．内容要点：（1）分析图示(6’) （2）得出结论(2’) （3）分析原因(3’) （4）你的观点(2’) （5）行文(2’) 2. One possible version： Last week the reporter of our school TV station asked our class about our favorite TV shows. Here are the results. We can see almost 48% of the students love watching game shows. (1.5’) 30% of the students like to watch talent shows. (1.5’) 17% of the students enjoy watching news (1.5’) and 5% of the students like to watch other shows. (1.5’) From the chart we can know that game shows are the most popular of all the TV shows. (2’) Why? One of the main reasons is that game shows are funny. They can learn some great jokes from them. (1.5’) Second, they think that watching game shows is a great way to relax after a busy week’s study. (1.5’) But I don’t like game shows. I think soap operas are more educational than them.(2’) 注意：每个要点以完整的主谓结构为认定标准，谓语形式错误扣0.5分。 每个要点意思表达有部分错误，视情况扣0.5分；要点意思完全表达错误不给分； 关键词拼写错误扣0.5；大小写及单词拼写错误不影响表达每4个扣1分，4个以下酌情扣分。 1
(2017) 师大一中小升初素质测评（招生）真卷精编（一） （时间90分钟，满分100分） 注：1-32题每小题3分，33题4分 1. 在一张比例尺为1:2000的图纸上，若量得长方形操场的长为6厘米，宽为4厘米，则 这个操场实际的面积是 平方米。 2. =?+??1.025.668625.0-8599。 3. 把“?”定义为一种运算符号，其意义为：b a b a ?=?1，那么()= ??+?+?60544332。 4. 计算：=?++?+?+?20 191431321211 。 5. 计算：=?? ? ??+???? ??+++??? ??++???? ?? ++31214131211-41312131211。 6. 计算：=++++++++1 -201201-4141-3131-21222222222 。 7. 计算：=+++ + 51 42 332415 。 8. 按照下面的程序计算： 若输入100=x ，输出结果501，若输入25=x ，输入结果是631。若开始输入的x 的值为 正整数，最后输出的结果为556，则开始输入的x 的值可能有 种。 9. 如图，图中最短的线段长度是1厘米，整条折线的长度是 厘米。
10. 某画展早上10时开门，此时已有人排队等候入场。从第一个观众到来的时候起，每分 钟观众来的人数一样多。如果开3个入场口，9分钟以后就不再有人排队；如果开5个入场 口，5分钟以后就不再有人排队。第一个观众到达的时刻是 。 11. 甲乙丙三村准备合作修一条公路，他们原计划按照9:8:3的比例派工。后因丙村不出人， 原计划由丙村承担的任务由甲乙村分担，由丙村出工资360元。结果甲村共派出45人，乙 村共派出35人，完成了修路任务。甲村应分得丙村所付工资 元。 12. 甲乙两项工程分别由一二两个工程队负责完成。晴天时一队完成甲工程需要12天，二 队完成乙工程需要15天；雨天时，一队的工作效率是晴天的60%，二队的工作效率是晴天 的80%，结果两队同时开工并同时完成各自的工程，则在施工期内，雨天有 天。 13. 将数字1-6填入下面算式的6个方框中，能得到的最大结果是 。 14. 一个最简分数的分子分母的和是50，若分子分母都减去5，得到的分数是3 2，那么这个最简分数是 。 15. 某校开学时，七年级学生在500~1000名范围内，男女生的比例是7:8，到八年级时， 由于收了40名转学生，男女比例变成了1517： ，则入学时，男生有 人。 16. 甲乙丙三人平均分着吃了5个面包，其中甲付了3个面包的钱，乙付了2个面包的钱， 丙没有付钱，吃完后丙应该拿出4元钱，则丙应该付给甲 元，付给乙 元。 17. 某校举办了数学竞赛，其中七年级参加的学生中，女生人数恰好是男生人数的一半，已 知男生的平均成绩是82分，女生的平均成绩是85分，那么七年级参赛学生的平均成绩（ ） 分。 18. 在一个俱乐部里，有老实人和骗子两类成员，老实人永远说真话，骗子永远说假话。一 次我们和俱乐部的四个成员聊天，我们问他们：“你们是什么人？是老实人还是骗子？”这 四个人的回答如下：第一个人说：“我们四个人全都是骗子。”第二个人说：“我们当中只有 一个人是骗子”第三个人说：“我们四个人中两个人是骗子。”第四个人说：“我是老实人。” 请判断一下，第四个人是老实人吗？ 。 19. 学校要建一段围墙，由甲乙丙三个班完成，已知甲班单独干需要20小时完成，乙班单 独干需要24小时完成，丙班单独干需要28小时完成。如果先由甲班工作1小时，然后乙班 接替甲班干1小时，再由丙班接替乙班干1小时，再由甲班接替丙班干1小时，···，三个班 如此交替着干，那么完成此任务共用了 小时。 20. 一项工程，甲单独做40天完成，乙单独做60天完成。现在两人合作，中间甲因病休息 了若干天，所以经过27天才完成。甲休息了 天。 21. 如图，将立方体绕对角线1AC 旋转1圈，应该形成哪种立体图形？ ?+ ?
2018师大一中小升初数学真卷（二） （时间：60分钟，满分：120分） 一、选择题（每小题3分，共30分） 1、估计下面算式的结果，最大的是（ ） A. ??? ??+?311774 B.??? ??-?311774 C.??? ??+÷311774 D.?? ? ??-÷311774 2、李明拿了等底等高的圆锥形和圆柱形容器各一个，他将圆柱形容器装满水后，倒入圆锥形容器，当水全部倒完时，发现从装满水的圆柱形容器内溢出36.6毫升水，这时圆锥形容器内有（ ）毫升水。 A.109.8 B.18.3 C.12.2 D.24.4 3、在250克的浓度为40%的盐水中只要加入（ ）克水，浓度就变成了25% A.100 B.150 C.350 D.400 4、两根同样长的绳子，第一根先截去全长的51，再截去51米，第二根先截去5 1米，再截去余下的5 1。两根剩下的绳子比较（ ） A.第一根长 B.第二根长 C.一样长 D.无法确定 5、幼儿园老师给小朋友们分糖，如果每人分7颗还差6颗，如果每人分6颗则多出7颗。那么共有糖果（ ）颗。 A.85 B.84 C.83 D.82 6、一部滑动的电梯从一楼到二楼需要32分钟，一个人步行从一楼到二楼需要43分钟，如果这个人在运行的电梯上从一楼到二楼需要（ ）分钟。 A. 21 B.121 C.1217 D.17 6 7、如果客车的速度比货车的速度快31，货车行驶的时间比客车行驶的时间多25%，那么客车行驶的路程与货车行驶的路程的比是（ ） A.5:3 B.5:4 C.16:15 D.15:16
8、有甲乙两根绳子，从甲绳上剪去全长的 43，余下的绳子再接上43米；从乙绳上先剪去43米，再剪去余下绳子的4 3，这时两根绳子所剩下的长度相等。原来两根绳子比较，（ ）。 A. 甲绳长 B.乙绳长 C.同样长 D.不能确定哪根长 9、小明在电脑上制作了如图所示的一长串符号，其中○表示白色，●表示黑色，}●●表示红 色，}●●●表示蓝色，876●●●●表示绿色，48476●●●●●表示紫色，然后全部进行复制，则第2008个符 号的颜色是（ ）。 ○●○}●●○}●●●○876●●●●○48476●●●●●··· A. 红 B.白 C.绿 D.蓝 10、六（1）班有48人，其中26人参加数学竞赛，24人参加作文竞赛，12人两项都参加了，有（ ）人两项都没有参加。 A.13 B.12 C.10 D.4 二、填空题（每小题4分，共32分） 11、有两袋大米，第一袋有77千克，第二袋有103千克，从第二袋取出（ ）千克放入第一袋，就能使第一袋的重量是第二袋的2倍。 12、“春满春池水，春时春草生。春人饮春酒，春鸟弄春色。”诗中“春”字出现的次数占全诗的（不包括标点符号）的（ ）% 13、对于任意自然数a 、b ，如果b a b a +=*2，已知()201225=**x ，自然数x 等于（ ） 14、一桶农药，第一次倒出72然后倒回桶内120克，第二次倒出桶内剩余农药的8 3，第三次倒出320克，桶中还剩下80克，原来桶中有农药（ ）克。 15、一个最简分数分子分母的和等于62，若分子减去1，分母减去7，所得新分数约分后是 72，原分数是（ ）。 16、如图是一个边长为4厘米的正方形，则阴影部分的面积是（ ）平方厘米，（圆周率取3.14）
四川省成都外国语学校2017-2018学年八年级英语下学期期中试题 注意事项： 1. 本试卷笔试分为两部分，Part A 和Part B。 2. 本堂考试150分钟，听力满分100分，笔试满分150分。 3. 答题前，考生务必先将自己的姓名，学号填写在答题卡上，并使用2B铅笔填涂。 4. 考试结束后，将答题卷和机读卡一并交回。 Written part Part A (65 scores) I. Multiple choice. (20 scores) Choose the similar answer to the underlined part. (5 scores) 1. All the parents should believe their children can make a difference to the world. A. is able to B. has the ability to C. are unable to D. have the ability to 2. During Henry’s stay in America, his host fa mily offered him nice food every day. A. provided him with nice food B. offered nice food for him C. provided nice food to him D. served him to nice food 3. The weather is crazy this year. It remains cold even in March. A. gets B. becomes C. still D. stays 4. Arnolddecided to eat less when he heard everybody call him ‘fat guy’. A. changed his mind B. never minded C. made a decision D. depended 5. It’s most footballers’ dream to take part in the World Cup which will be held in Russia this June. A. join B. join in C. get into D. become a member of Choose the right answers to fill in the blanks. (15 scores) 6. We have been climbing for such a long time. Why______ stop______ a rest? A. don’t we, to have B. not, having C. do we, to have D. don’t we, having 7. The model was ______ ‘April’ because she ___________ April. A. named, was born on B. calling, was born in
川师大一中2013-2014学年度上期七年级数学 期末综合测试卷 命题人：沈军卫审题人：沈军卫 班级__________ 学号__________ 姓名__________ 满分150分，时间120分钟 A卷（100分） 一．选择题（每小题3分，共30分） 1．如下图是有一些相同的小正方体构成的立体图形的三视图。这些相同的小正方体的个数是（） A、4个 B、5个 C、6个 D、7个 2．如上右图是正方体的平面展开图,每个面都标注了数字,那么围成正方体后位于3对面的数是（） A、1 B、2 C、5 D、6 3．绝对值是 3 2的数减去 3 1所得的差是（） A、 3 1 B、1 - C、 3 1或1 - D、 3 1或1 4．地球上的海洋面积约为361000000千米2，用科学技术法表示为（） A、3.61×109千米2 B、3.61×108千米2 C、3.61×107千米2 D、3.61×106千米2 5．同一平面内三条直线互不重合，那么交点的个数可能是（） A、0，1，2， B、0，1，3 C、1，2，3 D、0，1，2，3 6、点A为直线外一点，点B在直线上，若AB=5厘米，则点A到直线的距离为（） A、就是5厘米 B、大于5厘米 C、小于5厘米 D、最多为5厘米 7．陈光以8折的优惠价买了100元的一双鞋，他买鞋实际用了（） A、150元 B、100元 C.、80元 D、60元 8．如图3，OA⊥OB，∠BOC＝40°，OD平分∠AOC，则∠BOD的度数是（）度。 A、40 B、60 C、20 D、30 9．如果关于x的方程0 1 23 1 = + m x是一元一次方程，则m的值为( ) A、 3 1 B、3 C、 -3 D、不存在 10．已知下列一组数：Λ , 25 9 , 16 7 , 9 5 , 4 3 ,1；用代数式表示第n个数，则第n个数是（） A、 2 3 1 2 - - n n B、 2 1 2 n n- C、 2 3 1 2 - + n n D、 2 1 2 n n+ 二．填空题（每小题3分，计15分） 1．3 -的倒数是；最大的负整数是；最小的自然数是 D C O B A 图3
2018-2019学年成都双流区八年级英语上(人教版)期末质量检测 一、单项选择。(共10小题，每小题1分，共10分) ()1. We mustn't drop ________ everywhere because it will make our city dirty. A. water B. litter C. food D. snow ()2. —Is there ________I can do for you? —No, ________. A. nothing else; anything B. else anything; something C. else something; everything D. anything else; nothing ()3. Tony got up ________ when he heard the clock ringing. A. luckily B. lately C. early D. immediately ()4. Many people gave the poor boy money, but he didn't ________it. A. bring B. lose C. accept D. cheer ()5. The man is ________ to get such a good job in the famous company. A. lucky B. angry C. rude D. polite ()6. In China when the traffic light is red, you ________ cross the road. A. mustn't B. must C. need D. needn't ()7. —What were you doing when I called you at 7：00 pm yesterday? —I ________ the bowls in the kitchen. A. was washing B. am washing C. will wash D. wash ()8. There is nothing in his bedroom ________ a bed. A. at B. for C. with D. but ()9. —Why don't you go to the cinema with us? —________ A. That's right. B. You are welcome. C. That's a good idea. D. That's all right. ()10. —Please don't smoke here. —Sorry, I________ do it again. A. may B. may not C. will D. won't
四川省师大一中2018-2019学年七年级数学（下）期中试卷含答案 解析 一、选择题（每小题3分，共30分）： 1．（3分）如果∠α＝46°，那么∠α的余角的度数为（） A．56°B．54°C．46°D．44° 2．（3分）据路透社报道，中国华为技术有限公司推出新的服务器芯片组，此举正值中国努力提高芯片制造能力，并减少对进口芯片的严重依赖．华为表示，其最新的7纳米64核中央处理器（CPU）将为数据中心提供更高的计算性能并降低功耗．我们知道，1纳米＝0.000 000 001米，那么7纳米用科学记数法应记为（） A．0.7×10﹣7米B．7×10﹣8米C．7×10﹣9米D．7×109米 3．（3分）下列计算正确的是（） A．a3+a2＝2a5B．（﹣2a3）2＝4a6 C．（a+b）2＝a2+b2D．a6÷a2＝a3 4．（3分）计算（π﹣3）0÷3×（﹣）的结果是（） A．﹣1 B．﹣C．1 D．9 5．（3分）如图，下列推理所注理由正确的是（） A．∵DE∥BC，∴∠1＝∠C（同位角相等，两直线平行） B．∵∠2＝∠3，∴DE∥BC（两直线平行，内错角相等） C．∵DE∥BC，∴∠2＝∠3（两直线平行，内错角相等） D．∵∠DEC+∠C＝180°，∴DE∥BC（同旁内角相等，两直线平行） 6．（3分）等腰三角形两边长分别为4和8，则这个等腰三角形的周长为（） A．16 B．18 C．20 D．16或20 7．（3分）如图，尺规作图作∠AOB的平分线的方法如下：以O为圆心，任意长为半径画弧交OA、OB于点C、D，再分别以点C、D为圆心，大于0.5CD的长为半径画弧，两弧交于点P，作射线OP．由作法得△OCP≌△ODP从而得
2019年师大一中小升初考试题 一、填空题。 1、1与一个数的倒数之差是7 4，这个数是 。 2、甲比乙多2倍，乙比丙多12 ，则甲︰乙︰丙＝ 。 3、甲、乙二人从底楼（第一层）开始比赛爬楼梯（每两层之间楼梯的级数相同）甲跑到第4层时，乙恰好到第3层，照这样的速度，甲跑到第16层时，乙跑到 层 4、某次数学竞赛，试题共有10道，每做对一题得8分，每做错一题倒扣5分，小明最终得41分，他做对了 题。 5、老师带99名学生种树，老师先种一棵，然后对同学们说：“男生每人种2棵，女生每两人 合种1棵”。说完把99棵树苗分给了大家，正好按要求把树苗分完，则99名学生中男生为 名。 *6、在前2011个正整数中，既不是平方数也不是立方数有 个。 7、如图是一个边长为4厘米的正方体，分别在前后、左右、上下各面的中心挖去一个边长为1厘米的正方体，做成一种玩具，它的表面积是 平方厘米。 8、某校有皮球若干个，如平均分给10个班则余下9个，如平均分给12个班则余下11个，如平均分给15个班则余下14个，学校至少有 个皮球。 9、一本书的页码是连续自然数：1、2、3、4、……，当将这些页码加起来的时候，某个页码加了两次，得到不正确的结果2009，则这个被加两次的页码是 。 10、把33，51,65,77,85，91六个数分为两组，每组三个数，使两组的积相等，则这两组数的和之差（大减小）为 。 11、在公路自行车比赛中，小李骑了全程的15 后又行了62千米到达A 地，这段路程比全程的23 少8千米，自行车比赛的全程是 千米。 12、某地区水电站规定，如果每月用电量不超过24度，则每度收9分；若超过24度，则多出
亲爱的同学，请阅读以下提示： 1.试卷分A卷和B卷，满分100分。考试时间80分钟。 2.请用2B铅笔，将A卷1-50小题的答案填涂在机读卡相应的位置。用钢笔或签字笔将B卷一至五大题的答案按编号写在答题卷上。 A卷 一、选择填空。(共25小题；每题l分，计分25分) A.选出与下列各句中画线部分意思相近或相同的选项。（共4小题，每小题1分，计4分） A. near here B. had fun C. did some reading D. kind of ( )1. The weather is a little bit cold. Can you bring a coat to me ( )2. I read some books in the school library last night! ( )3. Is there a h otel in the neighborhood ( )4. They really had a good time on their summer vacation in Beijing. B. 从以下各题的A, B,C, 三个选项中选择正确的答案。（共17小题，每小题1分，计17分) ( )5. ---Where is Bob --- He ______ in the library. A. reads B. is reading C. read ( )6. --- Could you tell me ______ you did it so well --- With my parents’ help A. who B. when C. how ( )7. --- Did you ______ any vegetables on the farm yesterday --- No, I didn’t. But yesterday I ______ some apples in the garden. A. grew; pick B. grow; pick C. grow; picked ( )8. It’s getting ______ to have long noodles on birthdays. People think they’re a ______ of long life. A. popular; symbol B. popular; lot C. exciting; lot ( )9. Selina is good _____ playing basketball, but she doesn’t know how to play _____ guitar. A. at; with B. at;the C. with; a ( )10. This kind of tiger is ______ great danger. Please don’t ______down trees in the forest. A. at; cut B. in; cut C. in ; put ( )11. His daughter often eats ice-cream before going to bed, but never ______ after eating it . A. takes a shower B. goes to bed C. brushes the teeth ( )12. When Kate see snakes, she runs away quickly. She ______ the snakes. A. is happy to see B. is interested in C. is afraid of ( )13. He tried many ______ , and in the end he found the answer to the question. A. ways B. places C. roads ( )14. There are ______ students and teachers in front of the school. The number of teachers ______ five. A. a number of ; are B. a number of ; is C. the number of; is ( )15. I was very ______ to see my cousin again. We ______ all night, talking with each other. A. surprised; woke up B. interested; got up C. excited; stayed up ( )16. I hope you can stop ______ at the children. They are ______. A. s houting; tired B. shouting; scared C. looking; scaring ( )17. All the students are talking and walking in the classroom and it’s quite ______. A. quiet B. noisy C. excellent ( )18. We should be nice to everyone and not start a ______ with people around us. A. walk B. talk C. fight ( )19. All of us had a ______ vacation before the exam. How did you feel about yours A. two months B. two-month C. two-months
命题人：沈军卫 审题人：沈军卫 班级__________ 学号__________ 姓名__________ 满分150分，时间120分钟 A 卷（100分） 一．选择题（每小题3分，共30分） 1．如下图是有一些相同的小正方体构成的立体图形的三视图。这些 相同的小正方体的个数是 （ ） A 、4个 B 、5个 C 、6个 D 、 7个 2．如上右图是正方体的平面展开图,每个面都标注了数字,那么围成 正方体后位于3对面的数是（ ） A 、1 B 、2 C 、5 D 、6 3．绝对值是32的数减去3 1所得的差是（ ） A 、31 B 、1- C 、31或1- D 、3 1或1 4．地球上的海洋面积约为361000000千米2，用科学技术法表示为 （ ） A 、3.61×109千米2 B 、3.61×108千米2 图3
C 、3.61×107千米2 D 、3.61×106千米2 5．同一平面内三条直线互不重合，那么交点的个数可能是（ ） A 、0，1，2， B 、0，1，3 C 、1，2，3 D 、0， 1，2，3 6、点A 为直线外一点，点B 在直线上，若AB=5厘米，则点A 到直线 的距离为 （ ） A 、就是5厘米 B 、大于5厘米 C 、小于5厘米 D 、最 多为5厘米 7．陈光以8折的优惠价买了100元的一双鞋，他买鞋实际用了（ ） A 、150元 B 、100元 C.、80元 D 、60 元 8．如图3，OA ⊥OB ，∠BOC ＝40°，OD 平分∠AOC ，则∠BOD 的度数 是（ ）度。 A 、40 B 、60 C 、20 D 、30 9．如果关于x 的方程01231=+m x 是一元一次方程，则m 的值为( ) A 、31 B 、3 C 、 -3 D 、不 存在 10．已知下列一组数：Λ,259,167,95,43,1；用代数式表示第n 个数，则 第n 个数是（ ） A 、2312--n n B 、212n n - C 、2312-+n n D 、212n n +