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成都市2013届高中毕业班第二次诊断性检测
英语
本试卷分选择题和非选择题两部分。第I卷(选择题)1至9页，第II卷(非选择题)10至12页，共12页;满分150分，考试时间120分钟。
注意事项：
1. 答题前，务必将自己的姓名、考籍号填写在答题卡规定的位置上。
2. 答选择题时，必须使用2B铅笔将答题卡上对应题目的答案标号涂黑，如需改动，用橡皮擦擦干净后，再选涂其它答案标号。
3. 答非选择题时,必须使用0.5毫米黑色签字笔，将答案书写在答题卡规定的位置上。
4. 所有题目必须在答题卡上作答，在试题卷上答题无效。
5. 考试结束后，只将答题卡交回。
第I卷(选择题,共90分）
第一部分英语知识运用(共两节，满分40分）
第一节语法和词汇知识(共10小题;每小题l分，满分10分）
从A、B、C、D四个选项中，选出可以填人空白处的最佳选项，并在答题卡上将该项涂黑。
1. —Can I have an apple, Uncle Pal?
—______. An apple a day keeps the doctor away.
A. It doesn?t matter
B. It?s a deal
C. Y ou?re welcome
D. Help yourself
2. As the road to the airport is under reconstruction, we?d better ______early to avoid
the traffic jam,
A, pay off B. set off C. put off D. take off
3. On seeing ______gift they wanted ，the kids screamed with ______delight.
A. /; a
B. a；the
C. the；/
D. the；a
4. Up to now, thousands of red phone boxes, the old image of Britain, ______ due to
mobile phones.
A. removed
B. have removed
C. were removed
D. have been removed
5 ______all the homework assigned by the school the students have to work at it till midnight
A. Completing
B. To complete
C. Having completed
D. To have completed
6 The Charles Dickens Museum in Doughty Street is the only one of his London
homes to survive，______he wrote Oliver Twist.
A. where
B. that
C. which
D. what
7. When I ______home, I caught a thief stealing from a passer-by.
A. headed
B. was heading
C. has headed
D. had headed
8. —What are you two whispering about over there?
—Oh, ______. Just small talk.
A. no
B. nobody
C. none
D. nothing
9. —Where did you get this book?
—I picked it up from a second-hand bookshop if you ______know.
A. must
B. will
C. can
D. shall
10.I couldn't imagine ______difficult it was for these badly injured victims to make it to the hospital.
A. when
B. how
C. what
D. where
第二节完形填空(共20小题；每小题1. 5分，满分30分）阅读下面短文，从短文后各题所给的四个选项(A、B、C和D)中，选出可以填入空白处的最佳选项，并在答题卡上将该选项涂黑。
Being on the road at 3:15 a. m. to drive 450 kms wasn?t in my plans for the weekend. I had been looking forward to a couple of 11 ______ days to prepare myself for the following busy 12 ______ .
My son, Simon, and his good friends were heading for the 13 ______ . Due to the last- minute issue with transportation, I 14 ______ my car to ensure that everyone could get to the 15 ______ point so that they could get togethe r and enjoy their week?s 16 ______ by snowboarding and skiing.
The only thing that 17 ______ to me on my journey was that no sooner had I 18 ______ and said goodbye than I would make the trip 19 ______ ，in total, a round trip of 900 kms in just 10 hours. Such a long drive in one day was frightening, 20 ______ as I was looking forward to relaxation
Simon and I 21 ______，on our way ，a little about his break and a whole lot of his school subjects. It was great to have this time with him as we 22 ______ spent five continuous hours together ，other than when we played Saturday cricket (板球).
On my return trip, I 23 ______a strange sense of loneliness in some heavy morning 24
______. Within an hour it 25 ______ . I spent the next four hours listening to some CDs and enjoying the scenery. Surprisingly, after my long trip home I was 26 refreshed and energized even though I was physically exhausted. And I knew that I would have a(n) 27 ______ sleep that evening.
A change 28 ______ your environment, no matter how great, can provide you with the opportunity to 29 ______something from different angles, as well as to be refreshed and energized
Now I?m looking forward to my next 30 event and many more opportunities to spend quality time with those who are important to me and make my life more rewarding.
11. A, surprising B. exciting C. moving D. relaxing
12. A. hour B. day C. week D. month
13. A. snowfield B. beach C. hotel D. school
14. A, fueled B. parked C. offered D. lent
15. A. kick-off B. drop-off C. get-off D. take-off
16. A, freedom B. excitement C. adventure D. break
17. A. appealed B. happened C. appeared D. occurred
18. A. rested B. started C. arrived D. left
19. A. back B. forward C. out D. away
20. A. even B. just C. particularly D. mostly
21. A. quarreled B. talked C_ complained D. argued
22. A. constantly B. usually C. frequently D. rarely
23. A developed B. showed C. lost D. kept
24. A. smoke B. dust C. fog D. snow
25. A turned B. cleared C. froze D. shone
26. A. greatly B. completely C. immediately D, mentally
27. A. uncomfortable B. uneasy C. sound D. light
28. A. about B. from C. in D. for
29. A. give up B. look at C. find out D. carry on
30. A planned B. discussed C. unexpected D. prepared
第二部分阅读理解(共两节，满分50分）
第一节阅读下列短文，从每题所给的四个选项(A、B、C和D)中，选出最佳选项，并在答题卡上将该项涂黑。（共20小题;每小题2分，满分40分）
A
I moved from Chicago to Brooklyn in July of 2010，just in time to watch my mother die. Our parents were both gone now；I took with me as many things they had left behind as I could.
I was out walking one Saturday later that summer when something caught my eye - a pale green dress. Laid out on the pavement was stuff like earrings, glass candle-holders, books. Hanging on the fence behind were a few pairs of jeans and a green cotton dress.
The woman, the host o￡ the stoop (门廊）sale, looked like she was getting rid of a past she didn?t need or want. A dress that was too big for her. A chest of drawers that took up too much space, space she needed, maybe, to heal ，recover, or grow.
I wasn?t planning on buying anything really, b ut now I needed to show her that I appreciated her things and I would give them a safe home. Then I had my first stoop sale —I paid her 20 dollars for her green cotton dress and her blue candle-holder,
From that day on, I became interested in stoop sales. Some of my favorite things are from someone else?s life. I find no joy in shopping at regular stores any more. I love trying to sniff out a memory from a bud vase or a drawer. It is comforting to know that someone has breathed and laughed inside a sweater before me.
A few weeks ago, I carried my mother?s dresses to a friend?s stoop. These were her best items ，which were once worn by the most important person in my life. For many hours, I watched from across the path people advancing the stoop, some leaving with Mom1S dress. I used to think that her stuff was as forever sacred (神圣的）as my memory of her, I know now that once I love a scarf or shirt too dearly，it needs to find a new home. Even that green dress is long gone by now.
31. The author took her mother*s dresses after her death because ______
A. she valued the things used by her mom
B. she didn?t want to throw them, away
C. she could sell them later
D. they were her mom?s best items
32. From the passage, we know that ______.
A. the things the author bought from the woman are too big
B. the author is fond of imagining others? life experiences
C. the author will never shop at regular stores any more
D. the author still keeps most of her mom?s things
33. In the last paragraph ，the author tries to tell us that ______.
A her mom is the number one person in her life
B. she didn?t really want to sell her mom?s dresses
C. she still thinks of her mother quite often
D. love doesn?t mean holding on to something tightly
34. It can be inferred that the author will ______.
A. not sell her own things at stoop sales
B. keep her mom in her mind in another way
C. be sad about all the memory of her mom
D. move to another city for a new life
B
Welcome to The English Garden Shop.
These garden tools are chosen for us by our partners at Quality Garden Tools. All items are discounted Quality Garden Tools aims to deliver from stock in 48 hours. All items are covered by manufacturer?s(制造商）guarantees. Postage and packing is just ￡3. 95 on orders under ￡l00 and free thereafter.
35. How much will you pay for a pair of shears?
A. ￡17. 1.
B. ￡52. 95.
C. ￡69. 95.
D. ￡73. 9.
36. If you buy a set of spade and fork, you should fill in the Order code “______”.
A. BSDTS-EG
B. SJSST-EG
C. ARSHS-EG and HG88WC
D. HG88W and BSDTS-EG
37. You don?t have to pay for the postage if you buy ______.
A. HAWS LONG REACH CAN GREEN
B. LIGHTWEIGHT HEDGE SHEARS
C DIGGING SPADE & FORK SET
D. SPEAR & JACKSON TROWEL
38. The underlined word workhorse is closest in meaning with ______.
A. maker
B. laborer
C. speaker
D. digger
C
People think what I do is so wonderful because I interview stars. And I have to admit that when I first started working at Sassy in 1987 I was excited about that part of my job for the first couple of months，anyway. Then I noticed how stars would fool me around for months. I could never get enough time with a star to find out anything interesting, and some acted just simply
rudely. I started hating the way I was treated, and I was really disappointed to see that these people I had worshipped (崇拜）before were pretty ordinary. So I decided I would just tell the truth instead of keeping up their myths(神秘）.If the star was a bad guy, I would say so. If I thought anyone was stupid, I did not hold back that information.
I thought readers would appreciate that kind of honesty. Surprisingly, many of them hated me for it. I have gotten so many attacks on my character. In their eyes，being famous is everything, even more desirable than being truly creative and talented
Why do we need stars? In fact, the media created stars to satisfy our basic need for gossip (闲话）.Over time, talking about people we have never met and we are never likely to meet has become what we are crazy about. Thus, some people are more interested in the personal lives of the stars than in the lives of their own family and their own friends. That is why it is so ridiculous when a star wants to discuss only his or her work in an interview -as we care. We want the dirt on their personal lives.
There is another reason we worship stars. As a whole, our society is not as religious as it once was. It seems that people need something to fulfill them the way religion once did. Star worship exists as an unfulfilling desire for true heroes.
We make them stars, but then their reputation makes us feel unimportant, and we truly feel better about ourselves when they die. I am part of this whole process. No wonder I feel soiled at the end of workday.
39. What are the stars like according to the author?
A. They always treat others rudely.
B. They always talk about something dull.
C They are acutually ordinary people.
D. They are usually honest and polite,
40. We worship stars because ______.
A, we need true mental heroes to support us
B. we can learn something useful from famous stars
C. we concern about the stars ，family and friends
D. we like talking about the stars ，dressing styles
41. When the author is writing this article ，his tone sounds ______.
A, excited B. angry C. worried D. calm
42. What is the main purpose of the author writing the passage?
A. To show the disadvantages of working with stars.
B. To remind us not to worship famous stars blindly.
C. To laugh at the failures of stars he has interviewed.
D. To talk about the reasons why we worship stars.
D
Some young Cambodians are learning a new sport —skateboarding. The country?s first skateboard park is located on the grounds of a local charity group at the edge of Phnom Penh, the capital.
Sports like Khmer boxing and soccer are wildly popular in Cambodia. But Chea ，who has been skating for 6 months ，says skating has already become his favorite sport.
The skaters are learning tricks like launching off a jump or half-pipe and flying through the air on their narrow wooden boards.
A non-governmental organization called Skateistan Cambodia organizes weekly programs at the park. Skateistan started its work in Afghanistan years ago. Rory Burke is working with the group which expanded to Cambodia last year.
Rory Burke points out, “Yeah, it?s definitely not a typical Cambodian pastime (消遣）.And I think the idea of …why skateboarding?is that it?s not been done before here. We want to use skateboarding as something saying, …Hey，this is new ，this is something different.，And that kind of itself becomes a little bit of hook. People see it and they think and they say, …Wow, what is that?，and they want to get involved. ”
Skateistan partners with local groups that work with young people. The park is on the grounds of the group known as PSE, where children attend school and learn a trade. There are almost one hundred twenty participants. They all come from troubled lives.
Seventeen-year-old Sang Rotha is a student at PSE. “Sometimes I don?t do well on subjects like math,”he says, “I feel bad when I find it hard to keep up with my lessons. So that is why I skateboard -to improve my bad feelings. ?，
He says he began skateboarding more than a year ago. Before he started training, it seemed very easy. But it was very difficult to learn tricks, and he got hurt a lot from falling off.
Rory Burke says learning to deal with the difficulties is part of the lesson for these young skateboarders.
43. According to the passage, PSE is a group ______.
A. that works with Cambodian students
B. for young Cambodians to learn a trade
C. for young Cambodians in troubled lives
D. for young Cambodians taking skateboarding
44. What is said about skateboarding in the passage?
A. It is easy for young Cambodians to learn.
B. It is a good sport to help regain good feeling.
C. It originated in Afghanistan years ago.
D. It is as popular as Khmer boxing in Cambodia.
A. something strange
B. something quite new
C. something different
D. something attractive
46. It can be inferred from the passage that skateboarding is becoming ______.
A. a sport liked by most young Cambodians
B. an increasingly popular sport in Cambodia
C. a sport used to better young Cambodians? life
D. a good way to train young Cambodians? learning skills
E
Yawning sends out certain messages -either “Oh ，this movie is so boring” or “I probably need to get some sleep”. But did you know that a yawn can also help your brain to cool down when it is overheated?
A new study, led by a research team at Princeton University, has indicated that yawning could be the brain?s natural way of regulating temperatur e. People yawn more often when the temperature outdoors is lower than their body temperature but are less likely to yawn when it is hotter outdoors, according to Sciencedaily. com.
The research team did an experiment on 160 people, 80 in summer and 80 in winter, to examine how often they yawned at different air temperatures. The study found that people yawned more often in winter than in summer. Scientists say that when the air temperature is lower outside the body, there is heat exchange between the overheated brain and the cool air. But when the air temperature is higher than or equal to the body, people are less likely to yawn because the hot air they breathe in will make the brain even hotter.
When people yawn, their jaw is also stretched ，which increases blood flow and may also help cool the brain
The study showed that the amount someone yawned could be related to the amount of time they spent outside. The longer they spent outside in summer, the less they yawned. Nearly 40 percent of participants yawned within their first five minutes outside, but after that the percentage was reduced to less than 10 percent.
However, the result was the opposite in winter. The number of people who yawned increased when they spent more than five minutes outdoors. But the change was only slight compared to summertime.
According to Gallup, this is the first report to show that yawning frequencies change depending on season. This could help us to understand better the way our brains work. It may also help us understand the reason why frequent yawning can sometimes be a sign of brain disease.
47. The purpose of the experiment is ______.
A. to prove people yawn in winter and in summer equally
B. to indicate brain can regulate temperature naturally
C. to find the frequency of peo ple?s yawning
D. to show the real reason why people yawn
48. The information we get from Paragraphs 5 and 6 is that ______.
A. longer outdoor summertime results in more yawns
B. yawning frequency changes with outdoor time
C. yawning frequency increases with outdoor time
D. longer outdoor wintertime leads to fewer yawns
49. Acorrding to the text ，people yawn more often ______.
A, when the air temperature is lower outside the body
B. when the hot air breathed in makes the brain hotter
C. when the air temperature is higher than the body
D. when the air temperature is equal to the body
50. What could be the best title for the text?
A. Yawning Is A Sign of Brain Disease
B. Yawning Carries Some Information
C. Yawning Benefits Your Body
D. Yawning Cools Your Brain
第二节根据对话内容，从对话后的选项中选出能填人空白处的最佳选项,然后将答案写到答题卡相应的位置上。选项中有两项多余选项。（共5小题;每小题2分，满分10分）
A；Pacific Bell. May I help you?
B：51 ______
A：May I ask why?
B；Well, I?m moving house* I?ve just graduated, and I?m moving to California for a new job
第一节阅读表达(共5小题;每小题2分，满分10分）
阅读下面短文并回答问题，然后将答案写到答题卡相应的位置上(请注意每题词数要求)。
I ordered a new consumer product on New Year?s Day. The order was so exciting that I felt it was going to enable me to stay organized and stylish. Then I went to the store and made the purchase. They made it pretty difficult because of a new process that had just been put in place. I went to the store with my cash in hand hoping to just give it to someone to get my new product, but I had to work pretty hard to get someone to let me buy it.
Two weeks later, a new accessory (附件）became available for my product. I decided to go and procure this new accessory on my birthday. However, they didn?t have any and nobody could answer my questions, and they only had a number system before you could talk to anyone. So I spent an hour of my birthday sitting around waiting to be told that I couldn?t be helped. I?m a customer that just wanted to buy the product, and then when 1 wanted to keep giving them money for my shiny new product, they stilll weren?t interested
The only way 1 was told to get what I needed was to call someone and they could help.
I knew it would be an experience that would require much patience, so I waited a week and a half to make that call. Today was the day. I was also reminded today that sometimes things would just be comically bad from beginning to end.
After two specialists and one hour and twelve minutes, I got the information I needed.
This terrible experience isn?t quite over yet, but it?s definitely reached the comical stage. So
I?m laug hing and thinking about what lesson I should learn from this situation.
56.Why did the purchase become hard for the writer? (Within 8 words)
____________
______________
58.What did the writer have to do to get the accessory? (Within 10 words)
______________
59.How did the writer find his experience? (1 word)
______________
60.What would you do if you were in the writer?s situation? (Within 20 words)
______________
第二节短文改错(共10小题;每小题1. 5分，满分15分,将答案写到答题卡相应的位置上）下文中共有10处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。
增加:在缺词处加一个漏字符号（)，并在其下面写出该加的词。
删除:把多余的词用斜线(\)划掉。
修改:在错的词下划一横线，并在该词下面写出修改后的词。
注意:1.每处错误及其修改均仅限一词；
2.只允许修改10处，多者(从第11处起)不计分。
My neighbor?s children love playing hide-and-seek as other children do ，but everybody had imagined that the game they played themselves last week would be reported in the local newspaper. One afternoon, they are playing at the street comer. Paul, only five year old,
hid and locked himself in a storage mailbox in accident His sister, Nancy, heard his cries and realized what had happened, so she immediately asked a mailman open the metal door. Paul was free ，but he had such bad a scare that he could not stop ay. The mailman told him that next time he wanted to hide in a mail box, he should remember to put the stamp on himself.
When he heard that ，Paul burst into laughing.
第三节书面表达(满分35分，将答案写到答题卡相应的位置上）
假设你叫王平。为响应国家厉行节约的号召，请你以“厉行节约——为资源、为环保”为题，向某英语报社编辑写信，表达你对厉行节约的看法。该英文信应包括以下内容：
1. 节约与资源的关系；
2. 节约与环保的关系；
3. 举例说明中学生该如何厉行节约；
4. 倡导社会保持节约的优良传统。
注意:1.词数:120字左右；
2、全文不得体现出人的真实姓名
2020-2021学年四川省成都市双流区九年级（上）期末数学试卷 一、选择题（每小题3分，共30分）每小题均有四个选项，其中只有一项符合题目要求． 1．一元二次方程x（x+5）＝0的根是（） A．x1＝0，x2＝5B．x1＝0，x2＝﹣5 C．x1＝0，x2＝D．x1＝0，x2＝﹣ 2．如图，在Rt△ABC中，∠C＝90°，AB＝10，AC＝6，则sin B等于（） A．B．C．D． 3．由5个相同的小正方体组成的几何体如图所示，该几何体的主视图是（） A．B． C．D． 4．平行四边形、矩形、菱形、正方形共有的性质是（） A．对角线相等B．对角线互相平分 C．对角线互相垂直D．对角形互相垂直平分 5．一个不透明的盒子里有n个除颜色外其他完全相同的小球，其中有9个黄球．每次摸球前先将盒子里的球摇匀，任意摸出一个球记下颜色后再放回盒子，通过大量重复摸球实验后发现，摸到黄球的频率稳定在30%，那么估计盒子中小球的个数n为（） A．20B．24C．28D．30
6．已知函数y＝的图象经过点（2，3），下列说法正确的是（） A．y随x的增大而增大 B．当x＜0时，必有y＜0 C．函数的图象只在第一象限 D．点（﹣2，﹣3）不在此函数的图象上 7．已知△ABC∽△A1B1C1，BD和B1D1是它们的对应中线，若＝，B1D1＝4，则BD的长是（）A．B．C．6D．8 8．我国南宋数学家杨辉曾提出这样一个问题：“直田积（矩形面积），八百六十四（平方步），只云阔（宽）不及长一十二步（宽比长少12步），问阔及长各几步．“如果设矩形田地的长为x步，那么同学们列出的下列方程中正确的是（） A．x（x+12）＝864B．x（x﹣12）＝864 C．x2+12x＝864D．x2+12x﹣864＝0 9．如图，△ABC中，A（2，4）以原点为位似中心，将△ABC缩小后得到△DEF，若D（1，2），△DEF 的面积为4，则△ABC的面积为（） A．2B．4C．8D．16 10．将抛物线y＝3x2向右平移3个单位，所得到的抛物线是（） A．y＝3x2+3B．y＝3（x﹣3）2C．y＝3x2﹣3D．y＝3（x+3）2 二、填空题（每小题4分，共16分） 11．已知关于x的一元二次方程5x2+kx﹣6＝0的一个根是2，则它的另一个根是． 12．如图，在△ABC中，DE分别是AB，AC上的点，连接DE．若DE∥BC，＝，DE＝6，则BC的长为．
2017-2018学年四川省成都市双流县棠湖中学高二（上）10月月 考数学试卷（文科） 一、选择题（共12小题，每小题5分，满分60分） 1．（5分）直线x﹣y+2=0的倾斜角为（） A．60°B．120°C．45°D．135° 2．（5分）已知椭圆，长轴在y轴上，若焦距为4，则实数m的值是（） A．3 B．5 C．7 D．13 3．（5分）阅读如图所示的程序框图，运行相应的程序，则输出s的值为（） A．﹣1 B．0 C．1 D．3 4．（5分）“a=1“是“直线ax+y+1=0与直线（a+2）x﹣3y﹣2=0垂直”的（）A．充要条件B．充分不必要条件 C．必要不充分条件 D．既不充分也不必要条件 5．（5分）动圆M与圆C1：（x+1）2+y2=1外切，与圆C2：（x﹣1）2+y2=25内切，则动圆圆心M的轨迹方程是（）
A．B．C．D． 6．（5分）下列说法中不正确的是（） A．p∧q为真”是“p∨q为真”的必要不充分条件 B．存在无数个α，β∈R，使得等式sin（α﹣β）=sinα cosβ+cosαsinβ成立C．命题“在△ABC中，若sinA=sinB，则A=B”的逆否命题是真命题 D．若命题P：?x0∈R，使得，则?p：?x0∈R，都有 7．（5分）已知F1，F2是椭圆C：的两个焦点，P为椭圆C 上的一点，且⊥，若△PF1F2的面积为9，则b的值为（） A．3 B．2 C．4 D．9 8．（5分）设椭圆C：=1（a＞b＞0）的左、右焦点分别为F1、F2，P是C 上的点PF2⊥F1F2，∠PF1F2=30°，则C的离心率为（） A．B．C．D． 9．（5分）一束光线从点P（﹣1，1）出发，经x轴反射到圆C：x2+y2﹣4x﹣6y+12=0上的最短路程是（） A．4 B．5 C．D． 10．（5分）“不等式x2﹣x+m＞0在R上恒成立”的一个必要不充分条件是（）A．m B．0＜m＜1 C．m＞0 D．m＞1 11．（5分）已知两点A（a，0），B（﹣a，0）（a＞0），若曲线 上存在点P，使得∠APB=90°，则正实数a的取值范围为（） A．（0，3]B．[1，3]C．[2，3]D．[1，2] 12．（5分）若圆=24上至少有三个不同的点到直线l：ax+by=0的距离为，则直线l的倾斜角的取值范围是（） A．B． C． D．
2016年四川省成都市中考数学试卷 一、选择题：本大题共10小题，每小题3分，共30分 1．（3分）（2016?成都）在﹣3，﹣1，1，3四个数中，比﹣2小的数是（）A．﹣3 B．﹣1 C．1 D．3 2．（3分）（2016?成都）如图所示的几何体是由5个大小相同的小立方块搭成，它的俯视图是（） A．B．C．D． 3．（3分）（2016?成都）成都地铁自开通以来，发展速度不断加快，现已成 为成都市民主要出行方式之一．今年4月29日成都地铁安全运输乘客约181万乘次，又一次刷新客流纪录，这也是今年以来第四次客流纪录的刷新，用科学记数法表示181万为（） A．18.1×105B．1.81×106C．1.81×107D．181×104 4．（3分）（2016?成都）计算（﹣x3y）2的结果是（） A．﹣x5y B．x6y C．﹣x3y2D．x6y2 5．（3分）（2016?成都）如图，l1∥l2，∠1=56°，则∠2的度数为（） A．34° B．56° C．124° D．146° 6．（3分）（2016?成都）平面直角坐标系中，点P（﹣2，3）关于x轴对称的点的坐标为（） A．（﹣2，﹣3）B．（2，﹣3）C．（﹣3，﹣2）D．（3，﹣2） 7．（3分）（2016?成都）分式方程=1的解为（） A．x=﹣2 B．x=﹣3 C．x=2 D．x=3 8．（3分）（2016?成都）学校准备从甲、乙、丙、丁四个科创小组中选出一 组代表学校参加青少年科技创新大赛，各组的平时成绩的平均数（单位：分）2
A．甲B．乙C．丙D．丁 9．（3分）（2016?成都）二次函数y=2x2﹣3的图象是一条抛物线，下列关于该抛物线的说法，正确的是（） A．抛物线开口向下B．抛物线经过点（2，3） C．抛物线的对称轴是直线x=1 D．抛物线与x轴有两个交点 10．（3分）（2016?成都）如图，AB为⊙O的直径，点C在⊙O上，若∠OCA=50°， AB=4，则的长为（） A．π B．π C．π D．π 二、填空题：本大题共4个小题，每小题4分，共16分 11．（4分）（2016?成都）已知|a+2|=0，则a=． 12．（4分）（2016?成都）如图，△ABC≌△A′B′C′，其中∠A=36°，∠C′=24°，则∠B=． 13．（4分）（2016?成都）已知P1（x1，y1），P2（x2，y2）两点都在反比例函 数y=的图象上，且x1＜x2＜0，则y1y2（填“＞”或“＜”）． 14．（4分）（2016?成都）如图，在矩形ABCD中，AB=3，对角线AC，BD 相交于点O，AE垂直平分OB于点E，则AD的长为． 三、解答题：本大共6小题，共54分 15．（12分）（2016?成都）（1）计算：（﹣2）3+﹣2sin30°+（2016﹣π）0（2）已知关于x的方程3x2+2x﹣m=0没有实数解，求实数m的取值范围． 16．（6分）（2016?成都）化简：（x﹣）÷． 17．（8分）（2016?成都）在学习完“利用三角函数测高”这节内容之后，某兴趣小组开展了测量学校旗杆高度的实践活动，如图，在测点A处安置测倾器，
四川省成都市树德中学2020级高三物理期中考试卷 考试时间120分钟，分值150分 第I卷（选择题共60分） 一、不定项选择题：（60分）本题共12小题，在每小题给出的四个选项中，有的小题只有一个选项正确，有的小题有多个选项正确。全部选对的得5分，选不全的得2分，有选错或不答的得0分。 1、下列说法中正确的是（） A、跳高时，在沙坑填沙，是为了减小冲量 B、推小车时推不动，是因为合外力冲量为零 C、小船过河，船头垂直河岸正对对岸航行时，如果河水流速加快，则横渡时间将变长 D汽车拉拖车沿平直路面加速行驶，汽车拉拖车的力大于拖车拉汽车的力 2、下列关于机械能的说法中正确的是（） A、在物体速度减小的过程中，其机械能可能反而增大 B物体所受的合力做功为零，它的机械能一定守恒 C物体所受的合力不等于零，它的机械能可能守恒 D改变物体速度的若是摩擦力，则物体的机械能一定改变 3、如图所示，甲、乙、丙三个轮子依靠摩擦传动，相互之间不打滑，其半径 分别为「1、「2、「3。若甲轮的角速度 为速度为（） " 「1 1 f 「3 1 —「31 A、 B 、 C 、 r 3 「1 r2 4、如图，位于水平桌面的物块P, 由跨过定滑轮的轻绳与物块Q相连， 从定滑轮到P和Q的两段绳都是水平
的。已知Q与P之间以及P与桌面之
间的动摩擦因数都是卩，两物块的质量都是m,滑轮的质量、滑轮轴上的摩擦都不计, 若用一水平向右的力F 拉P 使它做匀速运动，则力F 的大小为 ( ) A 、4 ii mg B 、3 fl mg C 、2 卩 mg D 、卩 mg 5、如图，一物体从半圆形光滑轨道上边缘处由静止开 滑，当它滑到最低点时，关于动能大小和对轨道最低点压 说法中正确的是( ) A 、轨道半径越大，动能越大，压力也越大； B 轨道半径越大，动能越小，压力越大； C 轨道半径越小，动能越小，压力与半径大小无关； D 轨道半径越大，动能越大，压力越小； 7、如图所示，小球从a 处由静止自由下落，到b 点时与弹簧接触，到c 点时弹 簧被压缩到最短，若不计弹簧的质量和空气阻力，在小球由 ( ) A 、小球的机械能守恒 B 小球在b 点时的动能最大 C 、从b 到c 运动过程中小球的机械能逐渐减小 D 小球在C 点的加速度最大，大小一定大于 g 8假设一小型宇宙飞船沿人造地球卫星的轨道在高空中做匀速圆周运动， 若从 飞船上将一质量不可忽略的物体向飞船运动相反的方向抛出，以下说法错误的有 ( ) A 、 物体和飞船都可能按原轨道运动 B 、 物体和飞船可能在同一轨道上运动 6、 一根长为L 的细绳一端固定在0点, 为m 的小球A ，为使细绳与竖直方向夹角为 处于静止状态，对小球施加的最小力等于: A 、 3 mg B 、-3mg 2 a — b — c 运动过程中 mg 2 A
2020-2021学年四川省成都市双流区棠湖中学高三（上）开学数学试卷（文科） 一、选择题（共12小题）. 1．已知集合A＝{1，2，3}，B＝{3，4，5}，则A∩B＝（） A．{3} B．{2，5} C．{2，3，4} D．{1，2，4，5} 2．已知复数z满足z（2+3i）＝13，则在复平面内对应的点位于（）A．第一象限B．第二象限C．第三象限D．第四象限 3．在某技能测试中，甲乙两人的成绩（单位：分）记录在如图的茎叶图中，其中甲的某次成绩不清晰，用字母a代替．已知甲乙成绩的平均数相等，那么甲乙成绩的中位数分别为（） A．20 20 B．21 20 C．20 21 D．21 21 4．已知α∈R，则“tanα＝2”是“”的（） A．充分不必要条件B．必要不充分条件 C．充要条件D．既不充分也不必要条件 5．已知实数x，y满足约束条件，则z＝x﹣y（） A．有最小值0 B．有最大值C．有最大值0 D．无最小值 6．某公司的班车在7：30，8：00，8：30发车，小明在7：50至8：30之间到达发车站坐班车，且到达发车站的时刻是随机的，则他等车时间不超过10分钟的概率是（） A．B．C．D． 7．某几何体的三视图如图所示（单位：cm），则该几何体的表面积（单位：cm2）是（） A．B．C．D． 8．如图，正方体ABCD﹣A1B1C1D1的棱长为2，点O为底面ABCD的中心，点P在侧面BB1C1C的边
界及其内部运动．若D1O⊥OP，则△D1C1P面积的最大值为（） A．B．C．D． 9．已知定义在R上的函数f（x）＝3sinx﹣2x+1，则在[﹣5，5]上f（x）的最大值与最小值之和等于（） A．0 B．1 C．2 D．3 10．已知数列{a n}的前n项和S n满足S n+a n＝2n（n∈N*），则a7＝（）A．B．C．D． 11．已知F为双曲线的左焦点，过点F的直线与圆 于A，B两点（A在F，B之间），与双曲线E在第一象限的交点为P，O为坐标原点，若FA＝BP，∠AOB＝120°，则双曲线的离心率为（） A．B．C．D． 12．已知实数a、b满足log2a＝log3b，给出五个关系式：其中不可能成立的关系式有（） ①a b＜b a； ②a a＝b b； ③a b＞b a； ④a b＜a a； ⑤b b＜b a． A．1个B．2个C．3个D．4个 二、填空题：本题共4小题，每小题5分，共20分． 13．已知等比数列{a n}中，a2＝1，a5＝﹣8，则{a n}的前5项和为． 14．若x，y满足约束条件．则的最大值为． 15．过P（1，2）的直线l把圆x2+y2﹣4x﹣5＝0分成两个弓形，当其中劣孤最短时直线l的方程为． 16．在三棱锥B﹣ACD中，BA，BC，BD两两垂直，BC＝2，BD＝4，三棱锥B﹣ACD的侧面积为
2019年四川省成都市中考数学试卷 一、选择题（本大题共10小题，每小题3分，共30分） 1．（3分）《九章算术》中注有“今两算得失相反，要令正负以名之”，意思是：今有两数若其意义相反，则分别叫做正数与负数，若气温为零上10℃记作+10℃，则﹣3℃表示气温为（） A．零上3℃B．零下3℃C．零上7℃D．零下7℃ 2．（3分）如图的几何体是由4个大小相同小立方体组成，其俯视图是（） A．B．C．D． 3．（3分）总投资647亿元的西成高铁预计2017年11月竣工，届时成都到西安只需3小时，上午游武侯区，晚上看大雁塔将成为现实，用科学记数法表示647亿元为（） A．647×108B．6.47×109C．6.47×1010D．6.47×1011 4．（3分）二次根式中，x的取值范围是（） A．x≥1 B．x＞1 C．x≤1 D．x＜1 5．（3分）下列图标中，既是轴对称图形，又是中心对称图形的是（） A．B．C．D． 6．（3分）下列计算正确的是（） A．a5+a5=a10B．a7÷a=a6C．a3?a2=a6 D．（﹣a3）2=﹣a6 7．（3分）学习全等三角形时，数学兴趣小组设计并组织了“生活中的全等”的比赛，全班同学的比赛结果统计如下表： 得分（分）60708090100 人数（人）7121083 则得分的众数和中位数分别为（） A．70分，70分B．80分，80分C．70分，80分D．80分，70分
8．（3分）如图，四边形ABCD和A′B′C′D′是以点O为位似中心的位似图形，若OA：OA′=2：3，则四边形ABCD与四边形A′B′C′D′的面积比为（） A．4：9 B．2：5 C．2：3 D．： 9．（3分）已知x=3是分式方程﹣=2的解，那么实数k的值为（）A．﹣1 B．0 C．1 D．2 10．（3分）在平面直角坐标系xOy中，二次函数y=ax2+bx+c的图象如图所示，下列说法正确的是（） A．abc＜0，b2﹣4ac＞0 B．abc＞0，b2﹣4ac＞0 C．abc＜0，b2﹣4ac＜0 D．abc＞0，b2﹣4ac＜0 二、填空题（本大题共4小题，每小题4分，共16分） 11．（4分）（﹣1）0=． 12．（4分）在△ABC中，∠A：∠B：∠C=2：3：4，则∠A的度数为．13．（4分）如图，正比例函数y1=k1x和一次函数y2=k2x+b的图象相交于点A（2，1），当x＜2时，y1y2．（填“＞”或“＜”）． 14．（4分）如图，在平行四边形ABCD中，按以下步骤作图：①以A为圆心，
2019年四川省成都市双流区中考数学二诊试卷 一、选择题：（每小题3分，共30分）每小题均有四个选项，其中只有一项符合题目要求． 1．（3分）在﹣3，﹣1，2，4这四个数中，最小的数是（） A．﹣3B．﹣1C．2D．4 2．（3分）如图，在平行线l1，l2之间放置一块直角三角板，三角板的锐角顶点A，B分别在直线l1，l2上，若∠1＝55°，则∠2的度数是（） A．25°B．30°C．35°D．40° 3．（3分）下列运算中，正确的是（） A．（x2）3＝x5B．x3?x3＝x6 C．3x2+2x3＝5x5D．（x+y）2＝x2+y2 4．（3分）3月30日，我区航空经济产业功能区2019年一季度重大项目集中开工仪式在电子科大产业园四期项目用地举行．参加此次集中开工仪式项目共计71个，总投资超过249亿元，未来随着这一波又一波项目的建成投产，必将为双流航空经济插上腾飞之翼，助力双流打造中国航空经济之都．用科学记数法表示249亿元为（） A．249×108元B．24.9×109元 C．2.49×1010元D．0.249×1011元 5．（3分）如图所示的工件，其俯视图是（） A．B．C．D． 6．（3分）下列函数中，自变量x的取值范围是x＞3的是（） A．y＝B．y＝C．y＝D．y＝
7．（3分）在某学校“国学经典诵读”比赛中，有11名同学参加某项比赛，预赛成绩各不相同，要取前5名参加决赛，小明已经知道了自己的成绩，他想知道自己能否进入决赛，只需要再知道这11名同学成绩的（） A．中位数B．平均数C．众数D．方差 8．（3分）如图，正方形ABCD的对角线AC与BD相交于点O，∠ACB的平分线分别交AB，BD于M，N 两点．若AM＝4，则线段ON的长为（） A．2B．C．2D．2 9．（3分）将抛物线y＝﹣3x2+1向左平移2个单位长度，再向下平移3个单位长度，所得到的抛物线为（）A．y＝﹣3（x﹣2）2+4B．y＝﹣3（x﹣2）2﹣2 C．y＝﹣3（x+2）2+4D．y＝﹣3（x+2）2﹣2 10．（3分）如图，?ABCD中，∠B＝70°，BC＝6，以AD为直径的⊙O交CD于点E，则的长为（） A．πB．πC．πD．π 二、填空题：（每小题4分，共l6分） 11．（4分）的相反数是． 12．（4分）如图，在△ABC中，AB＝AC．以点C为圆心，以CB长为半径作圆弧，交AC的延长线于点D，连接BD．若∠A＝44°，则∠CDB的度数是．
语文练习（四） 一、基础平台（25分） 1.走进语境。（7分） （1）当时，环境十分（ ）è liè，还受到多方（ ）z? náo ，但他（ ）yì r án 接受了这一（ ）ji ān jù 的任务。 （2）我们要像（ ）y īng er （ ） ju àn ni àn 母亲的怀抱一样，热爱它们，（ ） Sh àn d ài 它们。 2.会查字典。（5分） “精”用音序查字法，应先查音序（ ），再查音节（ ）；用部首查字法，应先查（ ）部，再查（ ）画。“精”的解释有：A 、经过提炼或挑选的；B 、完美、最好；C 、细；D 、精通E 、精神、精力F 、机灵心细。在下列词语中“精”应选在的意思是： 精兵简政（ ） 精明能干（ ） 精益求精（ ） 博而不精（ ） 聚精会神（ ） 精打细算（ ） 3.下列句子没有语病的一项是（ ）（3分） A.安顺是一个美丽的城市，夏日的龙宫是人们避暑纳凉的好季节。 B .能否贯彻落实科学发展观，是建构和谐社会、促进经济可持续发展的重要保证。 C .宽带网不仅能浏览信息，还可以提供网上视频点播和远程教育等智能化、个性化。 D.语文综合性实践活动，使我们开阔了视野，提高了能力。 4.下列语序排列正确的一项是（ ）（3分） ①归结起来，这两种态度是正好相反的。 ②前者是错误的，注定会失败；后者是正确的，必然会胜利。 ③人们对待事物运动的力量可以采取两种不同的态度。 ④一种是积极疏导使之顺利发展。 ⑤一种是堵塞事物运动发展的道路。 A 、③⑤④①② B 、③①⑤④② C 、①⑤④②③ D 、①②⑤④③ 5.下列成语使用正确的一项是（ ）(3分) A.他的文章如高山流水．．．．般自然流畅，受到人们一致好评。 B.在毕业晚会上，同学们看到精彩表演，忍俊不禁．．．．的大笑起来。 C.这一别具匠心．．．． 的设计，赢得了评委的一致好评。 D.为了让学生取得更好的成绩，老师们费尽心机．．．．为他们辅导。
2018年成都市中考数学试题 A 卷（100分） 第Ⅰ卷（选择题，共30分） 一、选择题（本大题共10个小题，每小题3分，共30分，每小题均有四个选项，其中只 有一项符合题目要求，答案涂在答题卡上） 1．实数a ，b ，c ，d 在数轴上对应的点的位置如图所示，这四个数中最大的是（ ） A ．a B ．b C ．c D ．d 2．2018年5月21日，西昌卫星发射中心成功发射探月工程嫦娥四号任务“鹊桥号”中继星，卫星进入近地点高度为200公里，远地点高度为40万公里的预定轨道，将数据40万用科学记数法表示为（ ） A ．4410? B ．5410? C ．6410? D ．60.410? 3．如图所示的正六棱柱的主视图是（A ） A B C D 4．在平面直角坐标系中，点P （﹣3，﹣5）关于原点对称的点的坐标是（ ） A ．（3，﹣5） B ．（﹣3，5） C ．（3，5） D ．（﹣3，﹣5） 5．下列计算正确的是（ ） A ．224x x x += B ．222()x y x y -=- C ．236()x y x y = D ．235()x x x -?= 6．如图，直已知∠ABC =∠DCB ，添加以下条件，不能判定△ABC ≌△DCB 的是（ ） A ．∠A =∠D B ．∠ACB =∠DB C C ．AC=DB D ．AB =DC 7．如图是成都市某周内日最高气温的折线统计图，关于这7天的日最高气温的说法正确的是（ ） A ．极差是8℃ B ．众数是28℃ C ．中位数是24℃ D ．平均数是26℃
8．分式方程 11 12 x x x ++=-的解是（ ） A ．1x = B ．1x =- C ．3x = D ．3x =- 9．如图，在ABCD Y 中，60B ∠=?，⊙C 的半径为3，则图中阴影部分的面积是（ ） A ．π B ．2π C ．3π D ．6π 10．关于二次函数2241y x x =+-，下列说法正确的是（ ） A ．图象与y 轴的交点坐标为（0，1） B ．图象的对称轴在y 轴的右侧 C ．当0x <时，y 的值随x 值的增大而减小 D ．y 的最小值为﹣3 第Ⅱ卷（非选择题，共70分） 二、填空题（本大题共4个小题，每小题4分，共16分，答案写在答题卡上） 11．等腰三角形的一个底角为50°，则它的顶角的度数为 。 12．在一个不透明的盒子中，装有除颜色外完全相同的乒乓球共16个，从中随机摸出一 个乒乓球，若摸到黄色乒乓球的概率为3 8，则该盒子中装有黄色乒乓球的个数是 。 13．已知 654 a b c ==，且26a b c +-=，则a 的值为 。 14．如图，在矩形ABCD 中，按以下步骤作图：①分别以点A 和C 为 圆心，以大于1 2 AC 的长为半径作弧，两弧相交于点M 和N ；② 作直线MN 交CD 于点E 。若DE =2，CE =3，,则矩形的对角线AC 的长为 。 三、解答题（本大题共6个小题，共54分，解答过程写在答题卡上） 15.（本小题满分12分，每题6分） （1）计算：23282sin 603-+-+-o . （2）化简：2 1(1)11 x x x -÷+-. 16.（本小题满分6分）
2020届四川省成都市树德中学高三期中考试高中物 理 物理试卷 总分值150分考试时刻120分钟 一、选择题〔此题包括12小题，共48分。每题给出的四个选项中，有的只有一个选项正确，有的有多个选项正确，全部选对的得4分，选对但选不全的得2分，有选错的得0分。〕1．如下图，物体由高度相同、路径不同的光滑斜面静止滑下，物体通过AB的路径l与通过ACD的路径2的长度相等，物体通过C点前后速度大小不变，那么( ) A．物体沿路径1滑下所用时刻较短 B．物体沿路径2滑下所用时刻较短 C．物体沿两条路径滑下的时刻相同 D．路径2的情形不够明确，无法判定哪条路径滑下用的时刻的长或短 2．质点所受的合外力F随时刻变化的规律如图，力的方向始终在一直线上，t=0时质点的速度为零，在图示的t1、t2、t3和t4各时刻中，哪一时刻质点的动能最大〔〕 A．t1B．t2 C．t3 D．t4 3．如下图，细绳的一端固定在O点，另一端拴一个小球，平稳时小球位于A点，在B点有一钉子位于OA两点连线上，M点在B点正上方，且AB＝BM，与B点等高有一点N，且BN＝AB,现将小球拉到与M点等高的点P，且细线绷直，从静止开释小球后，小球的运动情形是( )
A．小球将摆到N点，然后再摆回 B．小球将摆到M、N之间的圆弧的某点，然后自由下落 C．小球将摆到M点，然后自由下落 D．以上讲法均不正确 4．滑轮A可沿与水平面成θ角的绳索无摩擦地下滑，绳索处于绷紧状态可认为是一直线，滑轮下端通过轻绳悬挂一重为G的物体B，假设物体和滑轮下滑时相对静止，那么( ) A．物体的加速度一定小于gsinθB．轻绳所受拉力为Gsinθ C．轻绳所受拉力为GcosθD．轻绳一定与水平面垂直 5．如下图，A、B两物体的重力分不是G A=3N，G B=4N。A用细线悬挂在顶板上，B放在水平面上，A、B间轻弹簧的弹力为F=2N，那么细线中的拉力T及B对地面的压力N的可能值分不是〔〕 A．7N和0N B．5N和2N C．1N和6N D．2N和5N 6．假如一作圆周运动的人造地球卫星的轨道半径增大到原先的2倍，仍作圆周运动，那么( ) A．依照公式V=ωr，可知卫星的线速度将增大到原先的2倍 1 B．依照公式F＝mV2/r ，可知卫星所需的向心力将减小到原先的 2 1 C．依照公式F＝GMm/r2，可知地球提供的向心力将减小到原先的 4
成都市双流区2018届高三数学4月月考 理科综合试题 注意事项： 1．答卷前，考生务必将自己的姓名、准考证号填写在答题卡上。 2．回答选择题时，选出每小题答案后，用铅笔把答题卡上对应题目的答案标号涂黑，如需改动，用橡皮擦干净后，再选涂其它答案标号。回答非选择题时，将答案写在答题卡上，写在本试卷上无效。 3．考试结束后，将本试卷和答题卡一并交回。 可能用到的相对原子质量：H 1 O 16 S 32 Cl 35.5 Na 23 第Ⅰ卷（126分） 一、选择题：本题共13个小题，每小题6分，共78分。每小题给出的四个选项中，只有一项是符 合题目要求的。 1.下列生命活动中，细胞膜没有直接参与的是 A.氨基酸脱水缩合形成多肽 B.效应T细胞与祀细胞密切接触 C.神经递质分泌到突触间隙 D.神经细胞产生和维持静息电位 2.研究发现，VPS4B(种蛋臼质)能够调控肿瘤细胞的增殖过程。在癌细胞培养过程中，下调VPS4B的含量，细胞分裂周期各时期比例变化如下表。下列分析中合理的是 细胞分裂周期各时期细胞数目比例(%)
67.24 19.78 12.98 A.VPS4B的缺失或功能被抑制可导致细胞周期缩短 B.核糖体中合成的VPS4B不需加工即可发挥调控作用 C.下调VPS4B的含量可能成为治疗癌症的新思路 D.VPS4B可能在S期与G2期的转换过程中起重要作用 3.质粒是细菌中的有机分子，下列对其描述，正确的是 A.质粒完全水解后最多可产生4种化合物 B.质粒能够自主复制 C.质粒中含有两个游离的磷酸基团 D.质粒是基因工程的工具酶 4．下列与生物实验相关的叙述,正确的是 A.用低倍镜观察不到紫色洋葱鳞片叶外表皮细胞的质壁分离和复原过程 B.检测生物组织中脂肪的实验必须用显微镜观察 C.观察DNA和RNA在细胞中分布的实验中,用盐酸处理细胞有利于DNA与染色剂结合 D.恩格尔曼选择水绵的原因之一是水绵具有易于观察的椭球形叶绿体 5.下图表示不同浓度赤霉素对花生长（以花的直径表示）的影响。据图分析，下列叙述正确的是 A.赤霉素对花生长的作用表现为低浓度抑制生长，高浓度促进生长 B.赤霉素浓度越高，对花生长的促进作用越强
【全国百强校】四川省成都市双流县棠湖中学2020-2021学 年高一上学期期末模拟物理试题 学校:___________姓名：___________班级：___________考号：___________ 一、单选题 1．以下说法不符合．．． 物理学史实的是：( ) A ．亚里士多德认为，必须有力作用在物体上，物体才能运动；没有力的作用，物体就要静止在某一个地方 B ．伽利略通过理想实验得出结论：力是维持物体运动的原因 C ．笛卡尔指出：如果运动中的物体没有受到力的作用，它将以同一速度沿同一直线运动，既不停下来也不偏离原来的方向 D ．牛顿第一定律是逻辑思维对事实进行分析的产物，不可能直接用实验验证 2． 如图所示是骨折病人的牵引装置示意图，绳的一端固定，绕过定滑轮和动滑轮后挂着一个重物，与动滑轮相连的帆布带拉着病人的脚，整个装置在同一竖直平面内.为了使脚所受的拉力增大，可采取的方法是( ) A ．只增加绳的长度 B ．只增加重物的质量 C ．只将病人的脚向左移动远离定滑轮 D ．只将两定滑轮的间距变大 3．若有一个小孩从滑梯上由静止开始沿直线匀加速下滑。当他下滑距离为L 时,速度为v ,当它的速度是2 v 时,它沿斜面下滑的距离是( ) A ．4L B ．22L C ．2L D ．34 L 4．甲、乙两辆汽车沿同一平直路面行驶，其v ﹣t 图象如图，下列对汽车运动状况的描述正确的是（ ）
A．在第10s末，乙车改变运动方向 B．在第10s末，甲、乙两车相距150m C．在第20s末，甲、乙两车相遇 D．若乙车在前，则可能相遇两次 5．如图所示，用细线悬挂一个均匀小球靠在光滑的竖直墙上，如果把线的长度边长，仍保持小球静止，则关于球对线的拉力F T、对墙的压力F N，下列说法正确的是( ) A．F T、F N都不变B．F T减小、F N增大C．F T、F N都减小D．F T增大、F N 减小 6．如图所示，一轻绳的两端分别固定在不等高的A、B两点，现用另一轻绳将一物体系于O点，设轻绳AO、BO相互垂直，α>β，且两绳中的拉力分别为F A、F B，物体受到的重力为G，下列表述正确的是（） A．F A一定大于G B．F A一定大于F B C．F A一定小于F B D．F A与F B大小之和一定等于G 7．在探究超重和失重的规律时，某体重为G的同学站在压力传感器上完成一次下蹲动 F随时间t变化的图像可能是图作.传感器和计算机相连，经计算机处理后得到的压力N 中的（）
. 成都市 2018 年中考数学试题及答案 A 卷（共 100 分） 第Ⅰ卷（共 30 分） 一、选择题：本大题共10 个小题 , 每小题 3 分, 共 30 分 . 在每小题给出的四个选项中，只有一项是符合题目要求的. 1. 实数a,b, c, d在数轴上对应的点的位置如图所示，这四个数中最大的是（） A．a B． b C．c D．d 2.2018年 5 月 21 日，西昌卫星发射中心成功发射探月工程嫦娥四号任务“鹊桥号”中继星，卫星进入近 地点高度为 200公里、远地点高度为40 万公里的预定轨道. 将数据 40 万用科学记数法表示为（）A．0.4106B．4 105C．4 106D．0.4 106 3. 如图所示的正六棱柱的主视图是（） A． B ．C． D ． 4.在平面直角坐标系中，点P 3, 5 关于原点对称的点的坐标是（） A．3,5B．3,5 C.3,5D．3,5 5.下列计算正确的是（） A．x2x2x4B 2 x2y2 C.x2 y 3 6 y D ．x2x3x5． x y x 6.如图，已知ABC DCB ，添加以下条件，不能判定ABC≌ DCB 的是（） A．A D B． ACB DBC C.AC DB D． AB DC 7.如图是成都市某周内日最高气温的折线统计图，关于这7 天的日最高气温的说法正确的是（） 6题图 A．极差是8℃B．众数是28℃ C.中位数是24℃D．平均数是26℃
. 8. 分式方程 x 1 1 1的解是（ ） A ． y B ． x1 C. x 3 D ． x 3 xx 2 9. 如图，在 ABCD 中， B 60 ， ⊙C 的半径为 3，则图中阴影部分的面积是（ ） A ． B ． 2 C. 3 D ． 6 10. 关于二次函数 y 2x 2 4x 1，下列说法正确的是（ 14 题图 ） A ．图像与 y 轴的交点坐标为 0,1 B ．图像的对称轴在 y 轴的右侧 C. 当 x 0 时， y 的值随 x 值的增大而减小 D ． y 的最小值为 -3 第Ⅱ卷（共 70 分） 二、填空题（每题 4 分，满分 16 分，将答案填在答题纸上） 11. 等腰三角形的一个底角为 50 ，则它的顶角的度数为 ． 12. 在一个不透明的盒子中，装有除颜色外完全相同的乒乓球共 16 个，从中随机摸出一个乒乓球，若摸到 黄色乒乓球的概率为 3 ，则该盒子中装有黄色兵乓球的个数是 ． 8 13. 已知 a b c ，且 a b 2c 6 ，则 a 的值为 ． b 5 4 14. 如图， 在矩形 ABCD 中，按以下步骤作图： ①分别以点 A 和 C 为圆心， 以大于 1 AC 的长为半径作弧， 2 两弧相交于点 M 和N ；②作直线 MN 交CD 于点 E .若DE 2 ， CE 3 ，则矩形的对角线 AC 的长 为 ． 三、解答题 （本大题共 6 小题，共 54 分. 解答应写出文字说明、证明过程或演算步骤 . ） 15. （1） 22 3 8 2sin 60 3 . （2）化简 1 1 x . x 1 x 2 1 16. 若关于 x 的一元二次方程 x 2 2a 1 x a 2 0有两个不相等的实数根，求 a 的取值范围 . 17. 为了给游客提供更好的服务，某景区随机对部分游客进行了关于“景区服务工作满意度”的调查，并 根据调查结果绘制成如下不完整的统计图表. 根据图标信息，解答下列问题： （ 1）本次调查的总人数为 ，表中 m 的值 ；
2020-2021学年四川省成都市双流区棠湖中学高一（上）第一次月考英语试卷 第二部分阅读理解（共两节，满分30分）第一节（共4小题；每小题6分，满分30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。 1. King Midas used to love gold. One day he met a fairy who allowed him to make a wish for something. The king replied at once,"I love gold. I want everything I touch to change into gold". "Very well, tomorrow morning, everything you touch will turn into gold." Saying this, the fairy disappeared. The king waited excitedly till the next morning. To his joy,everything he touched changed immediately into gold. "I'm the richest man in the world now," he shouted. Soon Midas became hungry. He sat down at his table. All the foods and drinks turned into gold in his hand. "I'm dying of hunger," he cried. Just then his daughter came running in. "Why are you so sad,dad? " she asked, putting her arms around him. There and then she became a golden statue. The king loved his daughter very much. Seeing this,he began to cry. He looked up and suddenly saw the fairy before him. "Don't you like the golden touch? " asked the fairy. "Please take it away," begged the king, "and give me back my daughter." "Well,you have learned your lesson. Go and wash in the river. Then the golden touch will be gone." The king ran quickly to the nearby river. （1）The fairy allowed the king to make a wish because________. A.she hoped to make the king the richest in the world B.she wanted to teach the king a lesson C.she wanted to turn the king's daughter into gold． D.she loved gold too （2）When the foods and drinks turned into gold the king was________. A.worried B.excited C.happy． D.hungry （3）The king's daughter became a golden statue when________. A.the king went to meet her B.she saw her father C.she put her arms around her father． D.the king loved her very much 2. One day when I was 5, my mother scolded（责骂） me for not finishing my rice and I got angry. I wanted to play outside and not to be made to finish eating my old rice. When angrily opening the screen door with my foot,I kicked back about a 12-inch part of the lower left hand corner of the new screen door. But I had no remorse, for I was happy to be playing in the backyard with my toys. Today, I know if my child had done what I did, I would have scolded my child, and told him about how expensive this new screen door was, and I would have delivered a spanking（打屁股）for it. They never said a word. They left the corner of the screen door pushed out, creating an opening, a breach（裂缝） in the defense against unwanted insects. For years, every time I saw that corner of the screen, it would constantly make me think about my mistake. For years, I knew that everyone in my family would see that hole and remember who did it. For years, every time I saw a fly buzzing（嗡嗡） in the kitchen, I would wonder if it came in through the hole that I had created with my angry foot. I would wonder if my family members were thinking the same thing, silently blaming me every time a flying insect entered our home, making life more terrible for us all. My parents taught me a valuable lesson, one that a spanking or stern（严厉的） words perhaps could not deliver. Their silent punishment for what I had done delivered a hundred stern messages to me. Above all, it has helped me become a more patient person and not burst out so easily. （1）When the author damaged the door, his parents________. A.left the door unrepaired B.gave him a spanking C.told him how expensive it was． D.scolded him for what he had done （2）The underlined word "remorse" in paragraph 1 most probably means________. A.hurt B.regret C.notice． D.feel （3）The experience may cause the author________. A.not to go against his parents' will B.to hide his anger away from others C.not to make mistakes in the future． D.to have a better control of himself （4）What is the main idea of this text？________ A.Parents are the best teachers of their children. B.Adults should ignore their children's bad behavior. C.Silent punishment may have a better effect on educating people.． D.What is the best way to become a more patient person. 3. An eight-year-old child heard her parents talking about her little brother. All she knew was that he was very sick and they had no money for a very expensive operation. When she heard her daddy say "Only a miracle（奇迹） can save him now," the little girl went to her bedroom and pulled her money from its hiding place and counted it carefully. She hurried to a drugstore with the money in her hand.