河南省鹤壁市高级中学2020_2021学年高二英语上学期尖子生联赛调研试题二2

河南省鹤壁市高级中学2020_2021学年高二英语上学期尖子生联赛调研试题二2
河南省鹤壁市高级中学2020_2021学年高二英语上学期尖子生联赛调研试题二2

河南省鹤壁市高级中学2020-2021学年高二英语上学期尖子生联赛调研试

题二

第一节(共15小题;每小题2分,满分30 分)

阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项,并在答题卡上将该项涂黑。

A

New Scientist Event

Instant Expert— How Your Brain Works

Saturday, 20 May 2017 from 10:00 to 17:00

London, United Kingdom

Ever wondered how your brain works? How that stuff in your head enables you to see, hear and think about the world around you, make decisions and act on them? Join six leading scientists to explore what we know about the most difficult kilo of matter in the universe.

The day will be chaired by psychologist and presenter of BBC Radio 4’s All in the mind,Claudia Hammond.

Overview:

The brain has long been a source of fascination. In 1819, the radical(激进的)thinker and surgeon William Lawrence put it like this: It’s strongly suspected that a Newton or Shakespeare excels other men only ... by having an extra inch of brain in the right place.

Today, many such suspicions are certainties. This event will introduce you to the evolution of the brain. We’ll study technique for controlling the brain using electric and magnetic fields, as well as the latest technologies that follow you to control the outside world using your mind alone.

Topics covered will include:

Evolution of the brain

How memory makes us human

Emotion

Sleep and brain

Booking information:

The event will be held in Brunei Auditorium at RCGP/30 Euston Square. And doors to the Auditorium will open at 9:15 am.

We require the name of each person attending — please ensure this is provided at the time of booking.

The schedule for the day will be confirmed closer to the event, and will be emailed to all ticket holders.

A minimum of 100 early bird discounted tickets are available priced at £129 (saving £20 on the full ticket price of £149).

1. What can attendees learn from the event?

A. How much their brain weighs.

B. How their sleep is related to their brain

C. Whether they can act on decisions they made.

D. How their brain is controlled by electric and magnetic fields.

2. What can we infer from what William Lawrence said?

A. There will be no another Newton or Shakespeare.

B. The brain of a Newton or Shakespeare is different from that of others'.

C. The more you use your brain, the more intelligent you will be.

D. No one can explain why people like Newton and Shakespeare are more intelligent than others.

3. When people book tickets, they are _____ .

A. required to offer their email address

B. likely to be told the schedule for the event

C. required to decide when to enter the Auditorium

D. likely to enjoy a discount if they promise to come to the event early

B

Are you taking a summer vacation this year? If you are, have you already started preparing for your trip? Online, there are a large number of preparation tips available for summer travelers. While preparation advice and tips may be of assistance to you, they are often hard to go by. This is because not everyone spends vacations at the same location.

No matter what your vacation destination is, you will need to take the climate into consideration. If you are visiting a tropical location, you will need to bring along the appropriate clothing. While you may be expecting warm and sunny weather, it is still advised that you prepare for the worst. Raincoats and an umbrella may be a great addition to your summer clothing.

Perhaps, the most popular summer vacation destination is the beach. Each year millions of individuals and families flock to beaches. When vacationing at the beach, it is important that you bring along proper clothing and sunscreen. Many vacationers do not realize the dangers of sunbathing without sunscreen. In addition to sunscreen, you will need to make sure that you have beach towels and plenty of water on hand.

For the most part, if you forget to bring along certain supplies you can purchase replacements. Many popular vacation destinations have inflated prices. To prevent unnecessary expenses, you are encouraged to check your luggage before you leave. In addition to the above mentioned preparation tips, you must inform friends and family of where you are going. In case something happens back home, you can easily be reached.

4. In the passage the author intends to _____

A. give advice on how to prepare for vacation

B. make a plan for his summer vacation

C. share his experience about summer vacation

D. warn readers against cheaters during vacation

5. As for the preparation advice and tips online, _____.

A. they are useful as well as practical

B. they are designed to cheat travelers

C. they may make you puzzled in a way

D. they can include all the destinations

6. If you travel to a tropical country, _____.

A. you must consider the climate first

B. you should wear shorts and T-shirts

C. you must prepare proper clothes

D. you should expect the sunny weather

7. According to the passage we can know that _____.

A. vacationing at the beach is the first but one

B. vacationers on beach are at the risk of sunburn

C. you must drink plenty of water before going to beach

D. you have to stay outdoors when going camping

C

Have your parents ever inspected your room to see if you cleaned it properly?Imagine having your entire house,garage,and yard inspected at any time―with no warning.Inspections were a regular part of lighthouse(灯塔)living,and a keeper’s reputation depended on the results.A few times each year,an inspector arrived to look over the entire light station.The inspections were supposed to be a surprise,but keepers sometimes had advance notice.

Once lighthouses had telephones,keepers would call each other to warn that the inspector was approaching.After boats began flying special flags noting the inspector was aboard,the

keeper’s family made it a game to see who could notice the boat first.As soon as someone spotted the boat,everyone would do last-minute tidying and change into fancy clothes.The keeper then scurried to put on his dress uniform and cap.Children of keepers remember inspectors wearing white gloves to run their fingers over door frames and windowsills looking for dust.

Despite the serious nature of inspections,they resulted in some funny moments.Betty Byrnes remembered when her mother did not have time to wash all the dishes before an inspection.At the time,people did not have dishwashers in their homes.In an effort to clean up quickly,Mrs.Byrnes tossed all the dishes into a big bread pan,covered them with a cloth,and stuck them in the oven.If the inspector opened the oven door,it would look like bread was baking.He never did.

One day,Glenn Furst’s mother put oil on the kitchen floor just before the inspector entered their house.Like floor wax,the oil made the floors shiny and helped protect the wood.This time,though,she used a little too much oil.When the inspector extended his hand to greet Glenn’s mother,he slipped on the freshly oiled surface.“He came across that floor waving his arms like a young bird attempting its first flight,”Glenn later wrote.After he steadied himself,he shook Glenn’s mother’s hand,and the inspection continued as though nothing had happened.

8.What does Paragraph 1 tell us about the inspection at the light station?

A. It was carried out once a year.

B. It was often announced in advance.

C. It was important for the keeper’s fame.

D. It was focused on the garage and yard.

9.The family began making preparations immediately after .

A. one of the members saw the boat

B. a warning call reached the lighthouse

C. the keeper put on the dress uniform and cap

D. the inspector flew special flags in the distance

10.If the inspector had opened the oven door,he would have seen .

A. an empty pan

B. many clean dishes

C. pieces of baked bread

D. a cloth covering something

11.The inspector waved his arms .

A. to try his best to keep steady

B. to show his satisfaction with the floor

C. to extend a warm greeting to Glenn’s mother

D. to express his intention to continue

the inspection

D

The twentieth century saw greater changes than any century before: changes for the better, changes for the worse; changes that brought a lot of benefits to human beings, changes that put man in danger. Many things caused the changes, but, in my opinion, the most important was the progress in science.

Scientific research in physics and biology has vastly broadened our views. It has given us a deeper knowledge of the structure of matter and of the universe; it has brought us a better understanding of the nature of life and of its continuous development. Technology in the application of science has made big advances that have benefited us in nearly every part of life.

The continuation of such activities in the twenty-first century will result in even greater advantages to human beings: in pure science —a wider and deeper knowledge in all fields of learning; in applied science — a more reasonable sharing of material benefits, and better protection of the environment.

Sadly, however, there is another side to the picture. The creativity of science has been employed in doing damage to mankind. The application of science and technology to the

development and production of weapons of mass destruction has created a real danger to the continued existence of the human race on this planet. We have seen this happen in the case of nuclear weapons. Although their actual use has so far occurred only in the Second World War, the number of nuclear weapons that were produced and made ready for use was so large that if the weapons had actually been used, the result could have been the ruin of the human race, as well as of many kinds of animals.

William Shakespeare said, “The web of our life is of a mingled yarn (纱线), good and ill together.” The above brief review of the application of only one part of human activities—science seems to prove what Shakespeare said. But does it have to be so? Must the ill always go together with the good? Are we biologically programmed for war?

12.What is the main idea of the whole passage?

A.The potential use of nuclear weapons.

B.The development of science is a double-edged sword.

C.The progress in the development of science.

D.A real concern—must the ill go hand in hand with the good in the development of

science?

13. From the fourth paragraph, we can infer that________.

A. a great many nuclear weapons were actually used for war

B. a large number of nuclear weapons should have been used for war

C. the author is anxious about the huge number of nuclear weapons on the earth

D. the author is doubtful about the ruin of human beings by nuclear weapons

14. The underlined word “mingled” in the last paragraph most probably means________.

A. mixed

B. fixed

C. double

D. thick

1 5. What do you think the author is most likely to suggest if he continues to write?

A. Further application of science to war.

B. More reading of William Shakespeare.

C. Proper use of science in the new century.

D. Effective ways to separate the good from the ill.

第二节(共5小题,每小题2分,满分10分)

根据短文内容,从短文后的7个选项中为每空选出能填入空白处的最佳选项,选项中有两项为多余

选项。

Leonardo da Vinci and Nature

In the modern world, art and science are two very separate activities, but in Leonardo's time they were closely connected. Science meant mathematics and medical studies. 16 Mathematics included practical work like surveying land for making maps as well as measuring the movements of the stars in the sky. An artist might need to measure the different parts of the body. He could also use mathematics to place things in relationship to each other in a drawing or painting so the scene looked correct. 17 Mathematics was also connected to music because musical sounds have a fixed relationship with each other that can be described in numbers. 18 More than this, though, Leonardo believed that numbers were a part of all things in the world, including music, and he said that "without them nothing can be done."

"Nature has kindly given us things everywhere to copy," wrote Leonardo. In all his activities, Leonardo was trying to discover the rules that control nature. In his search for those rules, he looked very carefully at a lot of examples and details. Actual experience was more important to him than opinion, and he worked from facts to ideas. 19 His purpose was to examine the world so he could copy it in beautiful paintings and sculptures. He also wanted to learn from the clever solutions of nature.

20 His quick little sketches, often done while wandering outside, helped him to catch

a movement or a shape. More careful drawings would be done at a desk with a pen and ruler. In July 2001 ,a small drawing by Leonardo was sold for $12 million. It was the most expensive drawing in the world.

A.Leonardo was always drawing.

B.How could these be connected with art ?

C.Leonardo's ideas were vastly ahead of his time.

D.Mathematicians and doctors worked to discover the unknown.

E.Above all, Leonardo wanted to understand how and why things worked.

F.You will see a good example of such positioning in the painting of The Last Supper. G.Leonardo himself was a very good musician and liked to play an instrument and sing. 第三部分语言知识运用

完型填空(共20小题;每小题1.5分,满分30分)

阅读下面短文,从短文后各题的A,B,C,D四个选项中,选出适合填入对应空白处的最佳选项,并在答题卡上将该项涂黑。

Recently I've completed my college degree. The __21__ course was sociology and the last project was called “smile”, which asked us to go out and smile at three people and __22__ their reactions.It was freezing. My husband and I went out to McDonald's. We were standing in line, waiting to be __23__, when all of a sudden everyone around us began to __24__ away from their position.As I turned around I smelled a _25__ “dirty body” smell, and there standing behind me were two poor __26__ men. As I looked down at the short gentleman __27__ to me, he was smiling and his beautiful sky blue eyes searched for __28__.To sit in the restaurant and __29__ up, they had to buy something. When the young lady at the counter asked what they wanted, he said coffee because that was all they could __30__.I smiled and asked the lady for two more breakfast meals on two __31__ plates. I then walked around the corner to the table that the men had chosen as a_32__ spot.I put the plates on the table and __33__ the blue-eyed gentleman's cold hands with my hands. With tears in his eyes,

he said, “Thank you”. I noticed all the __34__ in the restaurant were set on me. My husband __35__ at me and gave me a big hug.I returned to college and handed in a paper about this story as my __36__ to the instructor. She read it and then asked, “Can I __37__ this?”

I nodded. Just at that time I realized in my own way I had __38__ the people at McDonald's, my husband, the instructor, and every soul that shared the classroom. I __39__ with one of the biggest lessons I would ever learn—unconditional acceptance. We shouldn't __40__ people based on their appearance.

21.https://www.360docs.net/doc/5318432579.html,st B.first C.hardest D.easiest

22.A.recognize B.record C.describe D.imagine

23.A.paid B.treated C.served D.charged

24.A.throw B.give C.take D.back

25.A.horrible B.curious C.dull D.familiar

26.A.old B.healthy C.homeless D.disabled

27.A.close B.due C.superior D.similar

28.A.assistance B.acceptance C.advice D.admission

29.A.break B.pick C.cheer D.warm

30.A.afford B.enjoy C.spend D.drink

31.A.big B.separate C.beautiful D.special

32.A.resting B.eating C.visiting D.watching 33.A.shook B.shared C.clapped D.covered

34.A.customers B.hands C.eyes D.sounds

35.https://www.360docs.net/doc/5318432579.html,ughed B.smiled C.shouted D.stared

36.A.homework B.project C.assignment D.achievement

37.A.share B.spare C.care D.support

38.A.involved B.contacted C.investigated D.touched 39.A.graduated B.accomplished C.disappeared D.succeeded 40.A.estimate B.guarantee C.judge D.approach

第Ⅱ卷

第一部分:(共10空,每空1.5分,满分15分)

The first UN Chinese Language Day at the United Nations 1 (observe)on Friday at UN Headquarters in New York in 2010. 2 the world's most widely spoken language,it seems appropriate that Mandarin(普通话)has one day every year dedicated to it. This 3 (official)marked day of Mandarin language celebration was set by the United Nations as a way of celebrating the language's history and 4 (contribute)to the world. It is hoped that having one day every year 5 (celebrate)Mandarin will encourage more people around the world to take it up.With China likely to become the 6 (large)economy in the world,it is important that the wider world becomes interestingly more perfect in this world language. Every year UN Chinese Language Day 7 (fall)on April 20. A great way to get 8 (involve)in the celebration is to join a Mandarin class or attend one of the many Confucious Institutes(孔子学院) 9 are set up by China in countries around the world. The number of people learning Chinese is on 10 increase in China's neighboring countries,such as Korea,Japan,and Vietnam.

第二部分短文改错 (共10小题;每小题1分,满分10分)

假定英语课上老师要求同桌之间交换修改作文,请你修改你同桌写的以下作文。文中共有10处

语言错误,每句中最多有两处。错误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:在错的词下面画一横线,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。

Li Lin is a senior three students who devotes himself to his lessons every day.Last Saturday, as usual, he went to several courses.In the evening, he studies at home until deep into the night.He was too sleepy and tired that he couldn't work effectively.In Sunday morning, Li Lin was about to study when his father came up and advised him to have a break.Soon they had good idea.They bought a kite which they liked it very much and then the family went to the suburbs where Li Lin enjoyed himself fly the kite.The family had a picnic together but felt very relaxed in the open air.On Monday, Li Lin was energetic and actively in class.He said it was only why he had a better weekend.

第三部分书面表达(满分25分)

如何理解“成功”,不同的人有不同的看法。请认真阅读下面的引语( quotation),按要求用英

语写一篇短文。

“Success is the ability to go from one failure to another with no loss of enthusiasm."

- Sir Winston, Churchill

内容要求:

1.你对该引语的理解;

2.你的相关经历:

3.恰当的结尾。

注意:

1.短文开头已给出,不计人总词数:

2.文中不能出现考生的具体信息:

3.词数:120左右。

This quotation from Winston Churchill tells us that _ ______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

鹤壁高中高二年级尖子生联赛调研二

英语答案

一.阅读理解

1-3.BBA 4-7ACCB 8-11 CADA 12-15.DCAD 16-20BFGCA

二.完形填空

21-40 ABCDA CABDA BADCB BADAC

三.语法填空

41.was observed 42. As 43. officially 44. contributions 45. to celebrate

https://www.360docs.net/doc/5318432579.html,rgest 47. falls 48. involved 49.that/which 50. the

四.短文改错

51.students---student 52. studies—studied 53.too—so 54.In—On5 5.had∧a

56.liked it中的it去掉 57.fly—flying 58.but—and 59.actively—active 60.why—because 五.书面表达

One possible version:

This quotation from Winston Churchill tells us that we shouldn't get discouraged right after failures. Rather, we should keep trying with enthusiasm. Success consists in the ability to continue efforts through failures. At the age of twelve, I got a nice bike as a birthday gift. So excited was I that I couldn't wait to try my hand at riding it. However, it was harder than expected. The bike seemed too heavy and difficult to

control. Worse still, I took many falls off the bike. I was about to give up when my father came and encouraged me to keep going. With more practice, I did better and better. Looking back, I feel I wouldn't be able to ride a bike had I lost heart.

Actually, we can't succeed in everything we try. What's important is that we should stick at(坚持不懈地做;锲而不舍)it.

河南省鹤壁市淇滨高级中学2021-2022高一英语上学期期中试题

河南省鹤壁市淇滨高级中学2021-2022高一英语上学期期中试题 第 I 卷 第一部分:听力(共两节,满分30分)省略 第二部分: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 We offer five kinds of courses. Each course has been designed to help students according to their needs. Course1:General English General English is designed to develop students’ basic(基础的) communication skills in: Speaking and Pronunciation, Reading, Listening, Writing, Grammar and Vocabulary. Tuesday to Friday:9:00 am to 11:00 am,$288 per week. Course2:Academic English Academic English is for students who want to take the IELTS exam or for those who need to use English in a professional(专业的) area. Monday to Friday:4:00 pm to 5:00 pm,$320 per week. Course3:High School ESL We have High School ESL classes each week specifically designed for international students. Tuesday to Friday:8:00 am to 11:00 am,$25 per hour. Course4:Night Classes Do you want to improve your English and get the best results possible in your GRE test? We have two night classes each week designed to meet your needs. Tuesday and Thursday evenings:8:30 pm to 10:30 pm,$60 per day. Course5:One on One If you are interested in some One on One lessons with your teachers, we can design a curriculum(课程) to meet your needs. One on One lessons can improve your English language skills more quickly and help students who want to take TOEFL. Tuesday to Friday:2:00 pm to 5:00 pm,$80 per hour. 21.How much will you pay if you spend 2 weeks taking the High School ESL course? A.$200. B.$250. C.$350. D.$600. 22.What can we learn about One on One according to the passage? A. It’s designed just for English beginners. B. Its lessons are given in the morning. C. It’s more expensive than the other courses.

河南省鹤壁市淇县风资源开发区域

河南省鹤壁市淇县风资源开发区域 淇县风资源开发区域(红线内为开发区域) 拟开发区域概况: 淇县位于豫北,在北纬35°30′05″至35°48′26″和东经113°59′23″至114°17′54″之间。西依太行与林州市连山,东临淇河与浚县共水,北与鹤壁市毗邻,南与卫辉市接壤。总面积567.43平方公里。 淇县地势西北高,东南低,西和西北为山区,东和东南为平原和泊洼,北、东、南三面环水,所有内河均向东南汇集。西部山区海拔高程多在100至1000米,最高1019米。东部平泊地区高在百米以下,最低海拔63.8米,

高低差距955.2米。地面坡度分平坦、缓坡、斜坡、陡坡、急坡、险坡、 峭坡等七种,均因山丘平泊的变化而变化。 淇县地处北温带,境内有明显的季节性变化。夏至最长日照14小时35分。冬至最短9小时44分,春分秋分为12小时。境内全年日平均气温13.9℃。最暖年14.7℃,最冷年13.0℃。月平均气温以7月份最高为26.9℃,元月份最低为0.9℃。春季平均气温14.2℃,夏季平均气温26.2℃,秋季平均气温14.3℃,冬季平均气温0.5℃。淇县多年平均地面温度为16.7℃,6月最高平均32.1℃,1月最冷平均-0.8℃。淇县全年平均无霜期为209天。淇县地处太行山脉和连绵的浚县火龙岗之间,形成一南北走向的狭长风道,是全省大风较多的县分之一。风向多南北,风力多为4.5级。 淇县交通区位优越,基础设施完善。县城北距北京500公里,南至郑州120公里,处于安阳、濮阳、新乡、鹤壁、焦作、开封、郑州等中原城市群的中心位置。京广铁路、京珠高速公路、107国道纵贯县境,省道大海线、浚南线穿境而过。境内拥有两个铁路货运站,运输半径小,物流快捷,运输成本低。全县175个行政村在全省率先实现村村通油路,村村连国道,城乡油路密度名列全省前茅,交通极为便利。 风资源分级: 淇县风资源一般,辖区内西部山地地区资源稍好, 80m高度处能达到5.5m/s~6.2m/s的平均风速。空气密度为1.15kg/m3,低于标准空气密度,县境内整体风资源按类别划分多介于于B类下限和C类之间。以下推荐优先开发区域,是淇县境内地势较高,风资源相对突出的区域,但地势高峻,沟壑纵横,海拔落差较大,树木覆盖茂密。 容量估算: 淇县地形地貌以山地、丘陵、平原为主,拟开发区域内地势高峻,沟壑纵横,海拔落差较大,树木覆盖茂密。以下签订开发区域时需考虑日后项目建设的难度,拟开发区域预计装机容量初定为10万千瓦,日后或有扩大开发的可能。

河南省鹤壁市淇滨高级中学2020_2021学年高一物理上学期第三次周考试题

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A.相邻两个小球下落的时间间隔为0.4s B.此时第2个小球和第4个小球相距12m C.第1个小球下落时间为4s D.第3个小球的瞬时速度为10m/s 4.如图所示,质量均为m的木块A和B,用一个劲度系数为k的轻质弹簧连接,最初系统静止,现在用力缓慢拉A直到B刚好离开地面,则这一过程A上升的高度为( ) A.mg k B. 2mg k C. 3mg k D. 4mg k 5.水平横梁的一端A插在墙壁内,另一端装有滑轮B,轻绳的一端固定于墙壁上C点,另一端跨过滑轮后悬挂一质量为5kg的重物,∠CBA=30°,如图所示,则滑轮受到绳子的作用力大小为(g=10m/s2) A.50N B.503N C.100N D.1003N 6.长直木板的上表面的一端放有叠在一起的A、B两木块,木板由水平位置缓慢向上转动(即木板与水平面的夹角 变大),另一端不动,如图所示。则在两木块滑动之前,下列说法正确的是()

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B . 6 C . 4 D . 2 4. (2分)“a<1”是“x+≥a对x∈(﹣1,+∞)恒成立”的() A . 充分且不必要条件 B . 必要且不充分条件 C . 充要条件 D . 既不充分又不必要条件 5. (2分)已知a为如图所示的程序框图输出的结果,则二项式的展开式中含x2项的系数是 A . —6144 B . 192 C . —6 D . 6144 6. (2分)如图是正方体的侧面展开图,L1、L2是两条侧面对角线,则在正方体中,L1与L2()

A . 互相平行 B . 相交 C . 异面且互相垂直 D . 异面且夹角为60° 7. (2分) (2016高三上·赣州期中) 记f(x)=2|x| , a=f ),c=f(0),则a,b,c 的大小关系为() A . a<b<c B . c<a<b C . a<c<b D . c<b<a 8. (2分)(2020·鄂尔多斯模拟) 已知是两条不重合的直线,是两个不重合的平面,下列命题正确的是() A . 若,,,,则 B . 若,,,则 C . 若,,,则 D . 若,,,则 9. (2分)已知| |=3,| |=5,且 =12,则向量在向量上的投影为() A .

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(必修4)已知函数sin ()x f x x =在区间π(0,)2上是减函数,若01x <≤,2sin ()x a x =,sin x b x =,2 2 sin x c x =,则a ,b ,c 的大小关系是 . 8.如果实数a ,b 使得21x x --是201520152 1211ax bx ++++的因式,则a 的个位数字 为 . 二(本题满足16分) 求2232x y -=的整数解. 三(本题满足20分) 如图所示,已知AB 为圆O 的直径,点C 在圆O 上且满足AC BC <,在线段BC 上取一点D ,使BD AC =,在AD 上取一点E 使45BED ∠=?,延长BE 交CA 于F ,求证:CD AF =.

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2.A 【解析】 【分析】 生命系统的结构层次:细胞→组织→器官→系统→个体→种群→群落→生态系统,植物没有“系统”这一层次,单细胞生物没有组织、器官和系统这些层次。 【详解】 A、一种生物可属于两个生命系统的结构层次,如大肠杆菌属于细胞层次和个体层次,A正确; B、与羊相比,小麦没有系统层次,B错误; C、寨卡病毒没有细胞结构,不属于生命系统的结构层次,C错误; D、红细胞内的血红蛋白分子不属于生命系统的结构层次,D错误。 故选A。 3.B 【解析】 【分析】 1、真核生物:细胞体积较大,有成形的细胞核,有复杂的细胞器,其细胞壁主要成分是纤维素和果胶。真核生物一般有:真菌、植物、动物。 2、原核生物:细胞体积较小,无成形的细胞核,有拟核,细胞质中只有核糖体一种简单的细胞器,细胞壁的主要成分是肽聚糖。原核生物一般有:细菌、蓝藻、支原体、放线菌等。 3、病毒没有细胞结构,由蛋白质和核酸构成。 【详解】 A、香菇为真核生物,A错误; B、细菌、蓝藻都是原核生物,B正确;

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8.已知扇形周长为6 cm ,面积为2 cm 2 ,则扇形的圆心角的弧度数是( ) A .2 B .4 C .1或4 D .2或4 9.若 sin α-3cos αsin α+cos α=-5 3 ,则tan α的值为( ) A .1 B .-1 C.12 D .-12 10.函数y =2sin ? ? ? ?? x + π4(0≤x ≤π)的最大值与最小值之差为( ) A .2 B .-2 C.2+1 D.2-1 11.若sin α+cos α= 1-3 2 ,α∈(0,π),则sin α-cos α的值为( ) A. 1-32 B.3+12 C.3+14 D.3-1 2 12.设f (n )=cos ? ?? ??n π2+π4,则f (1)+f (2)+f (3)+…+f (2 015)等于( ) A. 2 B .- 22 C .0 D.2 2 二、填空题(本大题共4小题,每小题5分,共20分.把答案填在题中横线上) 13.函数y =3sin(2x + π 4 )的最小正周期为________. 14.已知圆的半径是6 cm ,则15°的圆心角与圆弧围成的扇形的面积是________cm 2 . 15.已知点P (tan α,cos α)在第三象限,则角α的终边在第________象限. 16.sin(-120°)cos 1 290°+cos(-1 020°)sin(-1 050°)=________. 三、解答题(本大题共6小题,共70分.解答应写出文字说明、证明过程或演算步骤) 17.(10分)(1)用更相减损术求72,120,168的最大公约数.(2)用辗转相除法求228 与 1 995的最大公约数. 18.(12分)用秦九韶算法求多项式f (x )=x 6 -2x 5 +3x 3 +4x 2 -6x +5当x =2时的值.

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