浙江省台州市高一英语上学期寒假作业10无答案

浙江省台州市2017-2018学年高一英语上学期寒假作业10

Book 2 Unit 1

一．阅读

A

Twenty-seven provinces,autonomous regions and municipalities across China have made plans for carrying out family doctor services,according to the top health authority.

By the end of 2016,22.2 percent of Chinese people and 38.8 percent of groups first enjoyed services from family doctors in cities that tried out the program,the National Health and Family Planning Commission reported recently.

Priority groups are the old,pregnant women,children,the disabled,patients with chronic (慢性的)diseases such as hypertension,diabetes and tuberculosis,as well as those with severe mental disorders.

Family doctor services will be spread to over 85 percent of Chinese cities,covering 30 percent of the urban population and over 60 percent of priority groups in 2017,said Li Bin,head of the commission.The program is important to establishing a tiered(分层的) disease treatment system,which means medical institutions receive patients according to the seriousness of their illnesses,said Li.

To attract more family doctors,the government will also help the transfer of

patients with better conditions to major hospitals,according to an official with the commission.

Family doctors,including grassroots health organizations,excellent doctors at township doctor’s and village doctors,provide basic medical care and other health services.

1.What does the third paragraph mainly tell us?

A.What chronic diseases are.

B.What priority groups are.

C.Severe mental disorders need family doctors.

D.The disabled especially need family doctors.

2.What do medical organizations base on if they receive patients?

A.The doctors’ time.

B.The patients’ family.

C.The patients’ income.

D.The severity of patients’ illness es.

3.What does the government do in order to attract more family doctors?

A.It will build more hospitals.

B.It will give more money to patients’ family.

C.It will supply more help in turning to patients.

D.It will provide a lot of money for family doctors.

4.What do family doctors do for patients?

A.They carry out first aid.

B.They tell people some medical knowledge.

C.They provide basic medical care and other health services.

D.They can provide better techniques for patients with chronic diseases.

B

India now leads the world in smartphone growth.It saw a 55% increase in the number of smartphones in 2014.The number of Web users increased by 37%.Smartphones were the source of 65% of its Internet traffic and 41% of its e-commerce,according to a report by the analyst Mary Meeker,titled “Internet Trends 2015”.

India’s Internet boom has started.Within three or four years,almost every adult in India will own a smartphone.They will be used to order goods,read news,monitor crop growth and so on.

Indian adults will be very interested in these devices just as young Americans are.87% of Americans between the ages of 18 and 34 who own smartphones say they never separate from these:“My smartphone never leaves my side.” Four out of five say that the first thing they do on waking is to reach for their smartphones.And three fifths believe that in the next five years everything will be done on mobile devices.

In the business world,the rise of mobile platforms is dramatically transforming many industries all over the world.What Indian software developers have to do is to start thinking about solutions to old problems by using all the features of these new devices.They need to take advantage of the unique properties of smartphones and tablets.As Indian software developers and enterprises master the smartphone,they will be able to export their solutions to the rest of the world.

This will make possible a new tech revolution that is greater than what created India’s IT industry in the 1980s and 1990s.We can ex pect the rapid transformation of India when a billion people become connected and have equal access to information and services.

5.Loads of numbers are used in Paragraph 1 to show .

A.India’s smartphones increase most rapidly in the world

B. India has the most advanced IT industry in the world

C.India will be a superpower pretty soon

D.India will export new smartphones to the rest of the world

6.What will most young Americans do first the moment they wake up?

A.Read news.

B.Shop online.

C.Get their smartphones.

D.Check e-mails.

7.Which can be the best title of the text?

A.More people,more smartphones

B.No dream,every Indian owns a smartphone

C.At hand,India’s next tech revolution

D.A small smartphone,a big use

C

Do you feel lucky?You probably don’t.You may think you’ve got where you are today through willpower and hard work.We tend to overlook luck’s role,and this seems

to get worse the richer we get;surveys show that the wealthiest are least likely to owe their fortunes to good fortune.Many such people oppose taxation(税收) and government spending:why should others get a handout(救济品) if they don’t need one?More often than not,they vote against the very policies that helped them get lucky to begin with.In a recent Atlantic essay,Robert Frank,an economist who has studied attitudes to chance,quoted(引用) EB White:“Luck is not something you can mention in the presence of self-made men.”

However,if we see this just as a problem of the super-rich people,we may let the rest of us off too easily.Anyone living in a highly developed economy in 2016 is already the one who benefits from luck—for example,not living in the modern-day Central African Republic,where few people can live a long life.In fact,we are lucky to have been born human.You might have been a battery hen,or a mayfly with only one day to live.

Our blindness to such truths isn’t only because we’re self-absorbed but also we attach more significance to things that are easier to call to mind.It’s not hard to recall countless times when you put in the effort to succeed:struggling through university finals,preparing for job interviews,tolerating a long-distance travel to work.On the other hand,it’s rather difficult to realize you’re privileged—like not being born in a war zone,or before antibiotics(抗生素),and so forth.

8.What does the underlined sentence in paragraph 1 mean?

A.Self-made men don’t like to be talked about.

B.Successful people owe their achievements to luck.

C.Successful people tend to overlook the role of luck.

D.Self-made men are more likely to show off their fortune.

9.According to the author,you are fortunate if you are not .

A.struggling through university finals

B.preparing for interviews

C.tolerating a long distance travel

D.living in a war zone

10.Which of the following might be the best title for the text?

A.Luck Is a Blessing

B.We Are Lucky

C.How to Be Lucky

D.Who Is Lucky

七选五

人教版数学-高一数学寒假作业三

A C P B 高一数学寒假作业三 一、选择题（每小题3分，共计30分） 1．设集合{|3A x =-≤x ≤0},B={x |-1≤x ≤3},则A ∩B=（ ） A ．［-1,0］ B ．［-3,3］ C ．［0,3］ D ．［-3,-1］ 2.下列图像表示函数图像的是（ ） x A B C D 3. 函数()lg(21)5 x f x x =++的定义域为（ ） A ．(－5，＋∞) B ．［－5，＋∞) C ．(－5，0) D ．(－2，0) 4. 已知0>>b a ，则3,3,4a b a 的大小关系是（ ） A ．334a b a >> B ．343b a a << C ． 334b a a << D ． 343a a b << 5.函数3()3f x x x =+-的实数解落在的区间是（ ） [].0,1A [].1,2B [].2,3C [].3,4D 6.已知(1,2),(3,1),A B 则线段AB 的垂直平分线的方程是（ ） .425A x y += .425B x y -= .25C x y += .25D x y -= 7. 下列条件中,能判断两个平面平行的是( ) A 一个平面内的一条直线平行于另一个平面; B 一个平面内的两条直线平行于另一个平面 C 一个平面内有无数条直线平行于另一个平面 D 一个平面内任何一条直线都平行于另一个平面 8. 如图，在Rt △ABC 中，∠ABC=900，P 为△ABC 所在平面外一点 PA ⊥平面ABC ，则四面体P-ABC 中共有（ ）个直角三角形。 A 4 B 3 C 2 D 1 9.如果轴截面为正方形的圆柱的侧面积是4π，那么圆柱的体积等于（ ） A π B 2π C 4π D 8π 10 .在圆224x y +=上，与直线43120x y +-=的距离最小的点的坐标为（ ） 二、填空题（每小题4分，共计24分） 11.设(3,3,1),(1,0,5),(0,1,0)A B C ，则AB 的中点到点C 的 距离为 . 12. 如果一个几何体的三视图如右图所示（单位长度：cm ）， 则此几何体的表面积是 .

陕西省2020学年高一语文寒假作业3

高一假期作业 一、阅读下面的文字，完成1～3题。（每题3分，共9分） 中国诗歌自身的调节功能 中国诗歌之所以能历久而不衰，一个重要的原因是它本身有一种调节功能，其语言形式处在不断变化的过程之中。从四言到五言到七言，随着汉语的发展变化而不断形成新的节奏。二二节奏的四言诗是诗歌的早期形式，随着《诗经》时代的结束而趋于僵化。此后的四言诗，如曹操《短歌行》那样的佳作实在不多。中国诗歌主要的形式是二三节奏的五言和四三节奏的七言。四言诗一句分成均等的两半，节奏呆板。五七言前后相差一个音节，寓变化于整齐之中，节奏活泼。所以五七言取代了四言而成为中国诗歌的主要形式。为什么七言没有继续加长，发展为九言呢?我想这是因为一句诗七个音节已经达到读起来不至于呼吸急促的最大限度，加长到九言读起来呼吸急促。这样的诗行不容易建立起来。 在音节变化的同时，格律也在逐渐严密化。中国诗歌是从自由体（古诗）走向格律体（近体诗），但格律体确立之后自由体仍不衰退，而是和格律体并存着，各有其特长。就一个诗人来说固然有的擅长自由体，有的擅长格律体，但两方面的训练都是具备的。在自由体与格律体之间始终没有分成派别。它们互相补充又各擅其能，共同促使中国诗歌的繁荣发展。 从深层考察，诗歌的发展乃是性情与声色两种因素的交互作用。从重性情到重声色，是中国诗歌史的第一个转变，这个转变发生在晋宋之际，具体地说是在陶谢之间。这恰好也正是近体诗的各种技巧被自觉加以运用的时候。明代的陆时雍说：“诗至于宋，古之终而律之始也。体制一变，便觉声色俱开。谢灵运鬼斧默运，其梓庆之鑢乎？”具体地说，这个转变主要表现在两个方面，即从重写意转到重摹象，从启示性的语言转向写实性的语言。《文心雕龙·明诗篇》说：“俪采百字之偶，争价一句之奇；情必极貌以写物，辞必穷力而追新。”指出了转变后的状况。从陶到谢的转变，反映了两代诗风的嬗迭。正如沈德潜《说诗晬语》所说：“诗至于宋，性情渐隐，声色大开，诗运转关也。”重声色的阶段从南朝的宋延续到初唐，一方面丰富了表现技巧，另一方面也建立起严密的格律，到盛唐，性情与声色完美地统一起来，遂达到了诗歌的高潮。 但是性情与声色的统一毕竟不能维持多久。盛唐半个世纪一过，二者便又开始分离。重性情的，声色不足；求声色的，性情不完。此后二者统一的诗作虽然不少，但能以二者的统一维持一个时代的再也没有了。中国诗歌史总的看来是绚丽多彩的，但其最引人瞩目的顶峰也不过只有这么一个盛唐，半个世纪而已。 1．下列对中国诗歌自身“调节功能”的理解，不正确的一项是（） A．语言形式的调节功能还体现在格律的逐渐严密化：格律体取代了自由体。 B．其语言形式的调节功能体现在不断形成新的诗句节奏：五七言取代了四言成为主流。 C．“调节功能”是指历久不衰的中国诗歌在其发展过程中不断求变的一种特性。 D．调节功能还体现在性情与声色的交互作用，从而使中国诗歌呈现出不同的风貌。2．下列表述完全符合原文意思的一项是（） A．随着人们对《诗经》兴趣的降低，《诗经》的时代结束了，人们由此感觉到二二节奏的四言诗越来越僵化。 B．中国诗歌没有从五言七言发展成九言，是因为五言七言寓变化于整齐之中，节奏更为活泼的缘故。 C．明代的陆时雍和《文心雕龙·明诗篇》都指出了两代诗风的嬗迭发生在陶渊明和

高一英语寒假作业(一)

高一英语寒假作业(一) 第I卷 第一部分听力(共两节,满分30分) 第二部分阅读理解 第一节阅读下列短文,从每题所给得四个选项(A、B、C与D)中,选出最佳选项。(共15小题;每小题2分,满分30分) A One day an American called Simon went to London to visit his friend, Rick、 Rick told him that his flat was on the first floor、 When he arrived, Simon went straight to the first floor of the building、 But he was told that there was no Rick on that floor、 Do you know why? In fact, the British call the first floor of a building the ground floor、 The floor above the ground floor is the first floor, which Americans would call the second floor、 The story shows that there are a few culture differences between Britain and America, though the British and Americans both speak English、 The British usually hide their feelings、 They seldom start a conversation with strangers、 For example, on the train the British often spend their time reading newspapers or books、 But Americans are quite different、 They're more active and easier to talk with、 The British and Americans may use different terms for many things、 The British usually use football, rubber and post while Americans prefer to use soccer, eraser and mail、 21、 Simon went to London to____、 A、 visit his friend B、 spend his holiday C、 study English D、 have a meeting 22、 According to the passage, the British usually spend their time____ on the train、 A、 playing cards B、 talking loudly C、 doing some reading D、 singing and dancing 23、 What's the best title for the passage? A、 Differences in culture B、 Simon's funny story C、 Information abroad D、 Hiding the feelings

高一英语寒假作业(二)

高一英语寒假作业（二） 第一部分阅读理解（共两节，满分40分） 第一节 (共15小题；每小题2分，满分30分) 阅读下列列短文，从每题所给的四个选项(A、B、C和D)中,选出最佳选项。并在答题卡上将该选项涂黑． A People around the world used their computers to buy goods, communicate with others, listen to music, see pictures and learn about different places and ideas. In 2006, more people around the world used new ways to communicate and connect with each other through the Internet. The blog is one form of communication that enjoys growing popularity. Blog is a short way of saying Web log. Through these personal Web sites, people can share their experiences, ideas and opinions with anyone on the Internet. People of all ages have their own blogs. For young people, they are a way to show their writings and other forms of self – expression. Many Web sites offer free services to create personal Web pages and fill them with writings and pictures. These sites include “MySpace”, used mainly by teenagers and young adults. MySpace is an online community that lets people share messages and pictures with an increasing number of friends. It is the most popular social networking site on the Web. YouTube is another Internet site that became more popular this year. This Web site lets anyone create, share and watch short videos. People can watch almost anything on YouTube: news, sports and entertainment events. There are music videos, and videos made by people in their own homes. These include videos of people singing or dancing, or animals doing funny things. Three young men created YouTube almost two years ago as a personal video sharing service. They recently sold it to Google for more than one and one half billion dollars. Games and entertainment also became a larger part of the Internet this year. One Internet social site is called Second Life. It is an online world in which computer users create a new self and live a different life. They get married, build homes, operate businesses, buy and sell goods, work, play and attend school. 1．People all around the world use blogs to . A．buy goods B．express themselves C．listen to music D．watch videos

2020高一数学寒假作业答案

2020高一数学寒假作业答案 导读：本文是关于2020高一数学寒假作业答案，希望能帮助到您！ 题号 1 2 3 4 5 6 7 8 9 10 11 12 答案 D D D A D D B C A C B C 13. ; 14. 4 ; 15. 0.4; 16. ②③ 17.(1)∵A中有两个元素，∴关于的方程有两个不等的实数根， ∴，且，即所求的范围是，且 ;……6分 (2)当时，方程为，∴集合A= ; 当时，若关于的方程有两个相等的实数根，则A也只有一个元素，此时 ;若关于的方程没有实数根，则A没有元素，此时， 综合知此时所求的范围是，或 .………13分 18 解： (1) ，得 (2) ，得 此时，所以方向相反 19.解:⑴由题义 整理得 ,解方程得 即的不动点为-1和2. …………6分 ⑵由 = 得 如此方程有两解,则有△= 把看作是关于的二次函数,则有 解得即为所求. …………12分

20.解： (1)常数m=1…………………4分 (2)当k 当k=0或k 1时, 直线y=k与函数的图象有唯一的交点， 所以方程有一解; 当0 所以方程有两解.…………………12分 21.解：(1)设，有， 2 取，则有 是奇函数 4 (2)设，则，由条件得 在R上是减函数，在[-3，3]上也是减函数。 6 当x=-3时有最大值 ;当x=3时有最小值， 由，， 当x=-3时有最大值6;当x=3时有最小值-6. 8 (3)由，是奇函数 原不等式就是 10 由(2)知在[-2，2]上是减函数 原不等式的解集是 12 22.解：(1)由数据表知， (3)由于船的吃水深度为7米，船底与海底的距离不少于4.5米，故在船航行时水深米，令，得 . 解得 . 取，则 ;取，则 . 故该船在1点到5点，或13点到17点能安全进出港口，而船舶要在一天之内在港口停留时间最长，就应从凌晨1点进港，下午17点离港，在

高一英语寒假作业1

2016年秋高一年英语寒假作业（一） 第二部分阅读理解（共20小题，每小题2分，满分40分） 第一节（共15小题；每小题2分，满分30分） 阅读下面短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。 A I liked adventure. Once I decided to climb a mountain and asked my uncle for advice. He said, “Unfortunately, I am so busy these days. But if no one leads, you are likely to be lost. ” I said, “What am I afraid of? If lost, I will call you for help. ” He said with a smile, “Well, I hope you will not get lost. Good luck. ” I confidently said, “I think I’ll certainly be able to return safely.” I finally set off by myself. Everything was very smooth at first. When I came close to the top, a sudden strong wind burst. I had to find a shelter to hide my sleeping bag inside. An hour later, I crawled（爬）out and looked around. All the places were so familiar and those roads appeared to extend（延伸）in all directions. What should I do? I decided to call for help, but except the sleeping bag, there was nothing left. Going on in my despair（绝望）, suddenly I found a map from the sleeping bag. Could that be put by Uncle? Anyway, I followed the directions on the map and succeeded in finding a smooth way home. Stepping into the house, I was pleased to see Uncle again and said excitedly, “Today, thanks to your map, or I really could not return home. My baggage, including my mobile phone, was blown away. ” Strangely Uncle asked, “The map?” I said, “The one you put in my sleeping bag.” Seeing the map, Uncle suddenly laughed again, “This is your 4-year-old cousin Linda’s painting of a Super Spider-Man.” I was surprised, “However, I really got this ‘map’ to find it down the road.” Uncle said, “You can come down the mountain successfully, not due to the map,

高一英语寒假作业答案

高一英语寒假作业答案 一、单选 1-5 ABCAD 6-10 ADAAC 11-15 BDBBA 16-20 BBDCB 21-25 CCADB 26-30 DBACC 二、选择适当的单词和短语填空 1.sounded like/ looked like 2. was used to/used to 3. because of /because 4. funny /fun 5. took /spent 6. prepared for /prepare 三填空 1. challenging 2 preparing 3. relax 4. delaying 5. watching 6. play, taking 7. have made 8. to be informed 四翻译 1.Send the short message to 1659,and you will get a wonderful gift for free 2. Can you tell me the way you study English ? 3. To surf the Internet at home at the weekends sounds like a good idea . 4. In the past four years , My English had improved a lot . 5. On hearing the news , he cried 6. As English teachers , we should do all we can to develop the

2019版高一英语： 寒假作业 第七天(含答案)

第七天 单项选择 1、About ______ of the surface of the earth is covered with water. A.three fourth B.three fourths C.third fourth D.third fours 2、Is _____ possible to master a foreign language without much memory work? A.this B.that C.one D.it 3、She insisted that he ______ her car and ______ prison. A.stole; had been put into B.steal; be put into C.had stolen; should be put into D.had stolen; must be put into 4、—Come on, please give me some ideas about the project. —Sorry. With so much work ________ my mind, I almost break down. A.filled B.filling C.to fill D.being filled 单句改错 5、自从他大学毕业,他就梦想出国旅游。(ever since) _______________________________________________________ ______________

6、我写信申请这份工作。 _______________________________________________________ ______________ 7、此后,人们开始了赏月和与家人吃月饼的传统。 _______________________________________________________ ______________ 8、他发现酒吧间的门被椅子堵上了,家具也被挪动过。 _______________________________________________________ ______________ 阅读理解 9、 You probably know who Marie Curie was, but you may not have heard of Rachel Carson. Of the outstanding ladies listed below, who do you think was the most important woman of the past 100 years? Jane Addams(1860—1935) Anyone who has ever been helped by a social worker has Jane Addams to thank. Addams helped the poor and worked for peace. She encouraged a sense of community(社区)by creating shelters and promoting education and services for people in need. In 1931, Addams became the first American woman to win the Nobel Peace Prize. Rachel Carson(1907—1964) If it weren’t for Rachel Carson, the environmental movement might not exist today. Her popular 1962 book Silent Spring raised awareness of the

高一上学期数学寒假作业(3)

高一上学期数学寒假作 业(3) -CAL-FENGHAI-(2020YEAR-YICAI)_JINGBIAN

数学寒假作业（3） 一． 选择题： 1，若tan 2α=，则sin cos αα的值为（ ） A ．12 B ．23 C ． 25 D ．1 2，已知角α的终边经过点P （m 4-，m 3）（0≠m ），则α+αcos sin 2的值是（ ） （A ）1或1- （B ）5 2或52- （C ）1或52- （D ）1-或5 2 3，要得到函数)4 2cos(3π -=x y 的图象，只需将函数x y 2sin 3=的图象（ ） （A ）向左平移 4π个单位 （B ）向右平移4π 个单位 （C ）向左平移8π个单位 （D ）向右平移8 π 个单位 4，已知α是三角形的一个内角且3 2 cos sin =α+α，则此三角形是（ ） （A ）锐角三角形 （B ）直角三角形 （C ）钝角三角形 （D ）等腰三角形 5，已知函数sin()y A x B ω?=++的一部分图象如右图所示，如果0,0,||2 A π ω?>><，则 （ ） A.4=A B.1ω= C.6 π ?= D.4=B 6，)6 2sin(3π --=x y ],0[(π∈x )的增区间是否 （ ） A ，]125, 0[π B, ]32,6[ππ C, ]1211,6[ππ D, ]12 11,32[ππ 7，方程cos x x =在(),-∞+∞内 （ ） (A)没有根 (B)有且仅有一个根 (C) 有且仅有两个根 （D ）有无穷多个 8，已知函数)(x f =A tan （ωx +?）（2 ||,0π ?ω<>），y =)(x f 的部分图像如下图，则=)24 ( π f （ ）

2018_2019学年高一英语上学期寒假作业302019030402101 (26)

河北省武邑中学2018-2019学年高一英语上学期寒假作业17 阅读理解第一节:阅读理解阅读下列短文，从每题所给的四个选项(A、B、C和D)中，选出最佳选项，并在答题卡上将该选项涂黑。 A “ Fire! Fire!” What terrible words to hear when one wakes up in a strange house in the middle of the night! It was a large, old, wooden house and my room was on the top floor. I jumped out of bed, opened the door and stepped outside the house. There was full of thick smoke. I began to run, but as I was still only half-awake, instead of going towards the stairs I went in the opposite direction. The smoke grew thicker and I could see fire all around. The floor became hot under my bare（赤裸的）feet. I found an open door and ran into a room to get to the window. But before I could reach it, one of my feet caught in something soft and I fell down. The thing I had fallen over felt like a bundle（包袱）of clothes, and I picked it up to protect my face from the smoke and heat. Just then the floor gave way under me and I crashed to the floor below with pieces of burning wood all around me. I saw a doorway in fire, then I put the bundle over my face and ran. My feet burned me terrible, but I got through. As I reached the cold air outside, my bundle of clothes gave a thin cry, I nearly dropped it in my surprise. Then I was in a crowd gathered in the street. A woman in a night-d ress and a borrowed man’s coat screamed as she saw me and came running madly. She was the Mayor’s wife, and I had saved her baby. 1. When the fire arose in the middle of the night, the author was _______. A. at home B. sleeping C. sitting in bed D. playing games 2.The author saved the baby _____. A. because he was very brave. B. because he liked the baby very much. C. because he just happened to save it. D. because it was t he Mayor’s baby. 3. He ran in the wrong direction because he _______.

2020高一英语寒假作业答案

2020高一英语寒假作业答案 本文是关于2020高一英语寒假作业答案，仅供参考，希望对您有所帮助，感谢阅读。 寒假作业一参考答案 一、单选 1-5 ABCAD 6-10 ADAAC 11-15 BDBBA 16-20 BBDCB 21-25 CCADB 26-30 DBACC 二、选择适当的单词和短语填空 1.sounded like/ looked like 2. was used to/used to 3. because of /because 4. funny /fun 5. took /spent 6. prepared for /prepare 三填空 1. challenging 2 preparing 3. relax 4. delaying 5. watching 6. play, taking 7. have made 8. to be informed 四翻译 1.Send the short message to 1659,and you will get a wonderful gift for free 2. Can you tell me the way you study English ? 3. To surf the Internet at home at the weekends sounds like a good idea . 4. In the past four years , My English had improved a lot . 5. On hearing the news , he cried 6. As English teachers , we should do all we can to develop the students’interest in learning English 7. Don’t miss the chance to go abroad ,or you will regret . 16-20CADDB

2014-2015学年高一数学寒假作业(9)(Word版,含答案)

高一数学寒假作业（九） 一、选择题，每小题只有一项是正确的。 1.下列四个函数中，与y=x 表示同一个函数的是（ ） A.() 2 x y = B.33x y = C.2 x y = D.x x y 2 = 2.已知函数12 2 ()(1)a f x a a x -=--为幂函数，则a = （ ） A ．1- 或 2 B ．2- 或 1 C ．1- D ．1 3.以下是定义域为R 的四个函数,奇函数的为-----------------------------（ ）A ．y ＝x 3 B ．y ＝2x C ．y ＝x 2 ＋1 D ．2x y = 4.若定义在R 上的偶函数)(x f 和奇函数)(x g 满足x e x g x f =+)()(，则=)(x g （ ） A x x e e -- B )(21x x e e -+ C )(21x x e e -- D )(2 1 x x e e -- 5.已知正方体的棱长为2，则其外接球的半径为 A ．2 B ．32 C ．22 D ．3 6.在空间四边形ABCD 中，AB 、BC 、CD 、DA 上分别取E 、F 、G 、H 四点， 如果GH 、EF 交于一点P ，则（ ） A ．P 一定在直线BD 上 B ．P 一定在直线AC 上 C ．P 在直线AC 或B D 上 D ．P 既不在直线BD 上，也不在AC 上 7.当a 为任意实数时，直线()110a x y a --++=恒过定点C ，则以C 为圆心，圆是（ ） A. 2 2 240x y x y +-+= B. 2 2 240x y x y +++= C. 2 2 240x y x y ++-= D. 2 2 240x y x y +--= 8.下列函数中与函数y x =表示同一函数的是（ ） A ．y =．y =．2 y = D ．2 x y x =

高一寒假作业

一、选择题 1．在研究下述运动时，能把物体看作质点的是 A．研究跳水运动员在空中的跳水动作时 B．研究飞往火星的宇宙飞船最佳运行轨道时 C．一枚硬币用力上抛并猜测它落地面时正面朝上还是朝下时 D．研究一列火车通过长江大桥所需的时间时 2．2008年9月25日晚9时10分许，神舟七号在酒泉卫星发射中心发射升空．点火第12秒时，火箭向东稍偏南的方向实施程序拐弯．点火第120秒时，火箭抛掉逃逸塔，这是火箭第一个分离动作．点火第159秒时，火箭一二级分离成功，一级坠落．此时，火箭已经飞过了平流层和中间层，正在接近大气层边缘．点火第200秒时，整流罩分离．神舟七号飞船上升运行260秒后，位于酒泉附近的副着陆场承担的飞船上升段应急返回搜救任务解除．飞船正常上升运行370秒后，着陆场系统银川搜救责任区任务解除．第500秒时，二级火箭关机，船箭组合体继续向前滑行．点火583秒后，飞船与火箭在高度约200公里处成功分离． ①2008年9月25日晚9时10分是时间 ②第12秒、第159秒、第200秒、第500秒是时刻 ③2008年9月25日晚9时10分是时刻 ④260秒、370秒、583秒是时刻 A．只有①②B．只有②③ D．只有②④C．只有③④ 3．以不同初速度将两个物体同时竖直向上抛出并开始计时，一个物体所受空气阻力可忽略，另一个物体所受空气阻力大小与物体速率成正比。下列用虚线和实线描述两物体运动的v-t图象可能正确的是 4．如图是质量为1.0kg的质点在水平面上运动的v-t图像，以水平向右的方向为正方向。以下判断正确的是（） A．在0～3 s时间内，合力对质点做功为10 J B．在4～6 s时间内，质点的平均速度为3 m/s C．在1～5 s时间内，合力的平均功率为4 W D．在t＝6 s时，质点的加速度为零 5．t=0时甲、乙两物体同时从同一地点出发沿同一直线运动，甲做匀速运动，乙做初速度为零的匀加速运动，以出发点为参考点，它们的位移—时间（x－t）图像如图所示，设甲、乙两物体在t1时刻的速度分别为v甲、v乙，则关于能否确定v甲：v乙的值，下面正确的是（） A．能确定，v甲： v乙=2:1 B．能确定，v甲：v乙=1:2

2019年重庆市永川三中高一英语寒假作业(八)

高一英语寒假作业 I.阅读理解 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. A I have a story about raising free-range (自由放养) kids. This past Columbus Day, my husband and I went fishing with some friends on their boat while our10 and 8-year-old kids were in school. We left the house all at the same time, about 7 a. m. My children walked to and from school every day and we knew they would be OK for a couple hours by themselves anyway. We told them to go home after school and we would be home around 4 p. m. We live on the Gulf Coast, and since it was a beautiful day, all of the adults decided to go fishing off-shore. At around 2 p. m. after a good harvest from the sea, we started back to the shore and unfortunately after some time, we ran out of gas. We were out of cellphone service, and what was even worse was that 911 wasn’t working. We didn’t have a radio either. Therefore, we were stuck waiting for someone to pass by. We were out there until 10 p. m. All the while my children were at home, expecting us to return shortly after they got home. At about 7 p. m. , when it was getting dark, my 10-year-old daughter thought something might be wrong so she walked to each house on the street until someone answered the door and asked the person what they should do. This was how we were finally found by the game warden (管理员) on the coast and “rescued”. Talking with that neighbor the next day, I was never so proud of my children. This neighbour explained to me, “What calmness both of your children showed when explaining the situation and how im pressed I was with your children seeking help, even though they didn’t know me.” I never doubted him for a minute, though next time we go fishing we’ll monitor the gas more carefully. 1.What did the author probably feel at the very start of returning to the shore? A Anxious. B. Frightened. C. Pleased. D. Disappointed. 2.Why couldn’t the parents call their children when going back to the shore? A. They didn’t carry a radio. B. Their boat was out of gas. C. They believed in their children. D. There was no phone signal there. 3.What was the author’s reaction to his neighbor’s words? A. He thanked his neighbor. B. He was not surprised. C. He didn’t agree with his neighbor. D. He needed to think for himself. 4.What is the best title for the text? A. Stuck on the Sea B. A Brave Girl C. A Thrilling Experience D. Lost at Sea B Painkillers (止痛药) are turning out to be a real pain: according to a new study in the British Medical Journal. Taking them for just a week can increase your risk of heart attack by 50%. The research suggested that the risk related to the use of certain drugs was greatest with higher doses (服用量) and during the first month of use. The potential risk may increase by 75% for medicines like ibuprofen (布洛芬) and naproxen, and more than 100% for rofecoxib. It all sounds bad but, your risk is very low, — say, one in a million — a 100% increase means