高中高中英语 unit4 exploring plants单元测试 新人教版选修9

Book 9 Unit 4 综合检测题

第二部分：英语知识运用（共两节，满分45分）

第一节：语法和词汇知识（共15小题；每小题1分，满分15分）

从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。

21. In the botanical garden we can find a(n) _______ of plants that range from tall trees to small flowers.

A. species

B. groups

C. amount

D. variety

22. This is a very special flower and it can _______ a strong sweet perfume at night.

A. give in

B. give up

C. give out

D. give out

23. If you _______ a mistake in reviewing the report, please bring it to my attention.

A. come along

B. come across

C. come around to

D. come about

24. In dealing with public relations, we should make every effort to prevent the _______ in personality.

A. contact

B. contrast

C. connection

D. conflict

25. It was __________ back home after he finished the report.

A. not until midnight did he go

B. until midnight that he didn’t go

C. not until midnight that he went

D. until midnight when he didn’t went

26. They are so close friends and their friendship ________ college days.

A. dates back to

B. dates back

C. dates to

D. dates back from

27. — Can you give me some advice about the design?

— I think it should _______ to all ages and social groups.

A. appear

B. appeal

C. suit

D. fit

28. The government not only ________ the refugees（难民）houses to live in, but also _______ them with food and clothes.

A. offered; offered

B. provided; provided

C. provided; offered

D. offered; provided

29. The teacher ______ several times, but he still didn’t understand it.

A. explained John the sentence

B. explained the sentence for John

C. explained to John the sentence

D. explained about the sentence to John

30. ______, he would come in late and then say he was sorry.

A. eventually

B. typically

C. particularly

D. especially

31. There was a nice little present for everyone, with a suitable poem _______ to it.

A. attached

B. attacked

C. attracted

D. attributed

32. — Please ______ your passport.

— I’m sorry, but I _______ in my home.

A. show me; left it

B. show to me; left it

C. show me; forgot it

D. show to me; forgot it

33. According to recent reports, one of the rare animals, ____ crocodile, is in ____ danger of dying out.

A. a; the

B. 不填; a

C. 不填; the

D. the; 不填

34. --- Did you have any difficulty catching yesterday’s lecture?

--- No. The professor spoke very clearly to make his speech easy ____.

A. understood

B. understand

C. understanding

D. to understand

35. --- Why did Miss Li leave the job?

--- She ____ for higher wages, but was turned down in the end.

A. broke off

B. gave away

C. held out

D. picked up

36. --- Is Alice playing both basketball and tennis for your school?

--- She ____. But now she has given up playing basketball.

A. is

B. has

C. was

D. had

37. All the children on the playground stared up into the sky until the noise of the plane ____.

A. gave up

B. took off

C. went out

D. died away

38. ____ in the care of his grandmother, Ted grew to be a boy with very good manners.

A. Leaving

B. To be left

C. To leave

D. Left

39. --- Do you think living in the country has advantages?

--- ____.

A. Yes, perfectly

B. Yes, it is

C. Well, that depends

D. Nothing at all

40. ____ surprises us most is that she doesn’t even kn ow ____ the difference between the two lies.

A. What; where

B. What; which

C. What; what

D. That; 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，掌握其大意，然后从36-55各题所给的四个选项（A、B、C和D）中选出最佳选项。

I am used to taking a bus home, but last night it was __36__ and I decided to ride in a taxi. I stood on the side-walk __37__ to each car that passed. I __38__ each one to __39__, but none would. Then I __40__ that it was the time of day when one group of taxi drivers stopped and another be gan work. I began to wish that I hadn’t had the idea of taking a __41___. I was all wet. I __42_ my hat to pour __43__ the water that had collected in the brim（帽边）.

At that moment, a taxi stopped in front of me and the driver said something that I didn’t __44__. I quickly jumped in and sat down. “Where do you want to go ?” he asked me. I gave him my __45__. “That’s uptown （向住宅区）, sir,” he said. “I’m __46__ duty now. I was just to __47__ you up if you were going my __48_. “__49__ this time it was raining harder. Cars were stopped __50__ the taxi. Their knocking horns（喇叭）were beginning to __51__ that we move. I __52_ I had known what to do!

I felt like insisting that the taxi driver __53__ me home. But at the same time, I knew that I __54_ have gotten into the taxi without understanding what the driver had said to me. Two more blasts（鸣笛）from somebody’s horn made the driver demand that I make up my mind. I got out, _55__ I didn’t want to.

36. A. late B. dark C. raining D. snowing

37. A. signing B. showing C. shaking D. nodding

38. A. hoped B. thought C. considered D. expected

39. A. pass B. pause C. stop D. stand

40. A. remembered B. forgot C. imagined D. thought

41. A. walk B. car C. bus D. taxi

42. A. put on B. took off C. put away D. picked up

43. A. off B. out C. away D. into

44. A. understand B. notice C. hear D. listen

45.A. place B. house C. home D. address

46.A. from B. off C. to D. on

47.A. take B. bring C. pick D. keep

48.A. direction B. road C. path D. way

49.A. By B. On C. During D. In

50.A. at B. in front of C. behind D. beside

51.A. order B. demand C. suggest D. encourage

52.A. wished B. hoped C. hated D. regretted

53.A. get B. send C. take D. fetch

54.A. mustn’t B. couldn’t C. shouldn’t D. mightn’t

55.A. as if B. although C. so D. and

第三部分：阅读理解（共20小题；每小题2分，满分40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。

A

From the jagged (锯齿状的) peaks of the Himalayas to the powerful Yangtze River that flows into the Pacific, China’s vast terrain (地带) and varied climate make it the sixth most biologically diverse nation on the planet.

Since 1998, The Nature Conservancy has been working in China’s northwest Yunnan Province to protect some of the amazing natural and cultural diversity unique to this

country for its future generations. In cooperation with Chinese local and state government agencies, the Conservancy established the Yunnan Great Rivers Project, which protects an area about the size of West Virginia.

Did you know?

●China contains 10% of the world’s total species.

●At least 15% of China’s mammal species and 8% of its bird species are found nowhere else on Earth.

●Nearly 15,000 plant species are native to Yunnan Province.

●Yunnan is home to 75% of Tibetan medicinal herbs and 30 endangered species.

What is the Nature Conservancy trying to do?

Education for Sustainability (可持续性)

The Nature Conservancy recognizes that environmental education is an important element of working closely with local communities to achieve sustainable conservation results. In response, the Conservancy launched a new program called Education for Sustainability which tests means of teaching and learning that combine conservation goals, social justice, and appropriate development and participation in a vision and mission for personal and social change.

Promoting Green Tourism

Tourism is both an environmental threat and an economic opportunity, with the potential to provide extremely needed income to northwest Yunnan. The Conservancy is working with local communities, government agencies, and tourism ,enterprises(企业) to develop strategies for “green” tourism which will limit the footprint of mass tourism while generating income for local people. In addition to combining tourism development and management at our five action sites, we assisted with regional marketing efforts to promote eco-tourism opportunities.

56. China ranks _______ among the most biologically diverse nations on the planet.

A. tenth

B. sixth

C. fifteenth

D. eighth

57. Which of the following statements is NOT true according to the text?

A. The Nature Conservancy has been working in Chin a’s

B. The Nature Conservancy cooperated agencies in the Yunnan Great Rivers Project.

C. Nearly 10% of the world’s plant species are native to Yunnan Province.

D. For the moment the Nature Conservancy is devoting itself to education for sustainability as well as eco-tourism.

58. To develop strategies for eco-tourism, the Nature Conservancy is working with the following EXCEPT _________.

A. West Virginia

B. local communities

C. government agencies

D. tourism enterprises

59. Which of the following best shows the author’s attitude towards tourism?

A. We should greatly promote tourism as it has no disadvantages.

B. Tourism is extremely helpful to people in Yunnan.

C. Tourism does no good to our environment.

D. Tourism is an opportunity for the economy as well as threat to the environment.

B

Edmund Halley was an English scientist who lived over 200years ago. He studied the observations of comets which other scientists had made. The orbit of one particular comet was a very difficult mathematical problem. He could not figure it out. Neither could other scientists who dealt with such problems.

However, Halley had a friend named Isaac Newton. Who was a brilliant mathematician. Newton thought he had already which he had done it. He told Halley that the orbit of a comet had the shape of an ellipse.

Now Halley set to work. He figured out the orbits of some of the comets that had been observed by scientist. He made a surprising discovery. The comets that had appeared in the years 1531, 1607 and 1682 all had the same orbit. Yet their appearances had been 75 to 76 years apart.

This seemed very strange to Halley. Three different comets followed the same orbit. The more Halley thought about it, the more he thought that there had not been three different comets, as people thought. He decided that they had simply seen the same comet three times. The comet had gone away and had come back again.

It was an astonishing idea! Halley felt certain enough to make a prediction of what would happen in the future. He decided that this comet would appear in the year 1758. There were 53 years to go before Halley’s prediction could be tested.

In 1758 the comet appeared in the sky. Halley did not see it, for he had died some years before. Ever since then that comet been called Halley’s comet, in his honor.

60. Halley made his discovery ______.

A. by doing experiments

B. by means of his own careful observation

C. by using the work of other scientists

D. by chance

61. Halley made a surprising but correct prediction in the year ________.

A.1704

B.1705

C. 1706

D.1707

62. This text in general is about _______.

A. Halley and other scientists

B. the orbit of a comet

C. Newton and Halley

D. Halley and Halley

63. Which of the following is TRUE?

A. Edmund Halley was an American scientist.

B. Halley made his discovery by doing experiments.

C. Isaac Newton was a famous mathematician.

D. The orbit of a comet had the shape of an around.

C

Millions of years ago dinosaurs lived on the earth. In the days of dinosaurs, the whole earth was warm and wet. There were green forests and they could find enough to eat. Later, parts of the earth became cold and dry, and the forests there died. Then dinosaurs could not find enough to eat. This must be one reason why dinosaurs died out.

We can guess another reason. New kinds of animals came on the earth. Some had big brains and strong .They could kill dinosaurs.

There may be other reasons that we don’t know about yet. Scientists are are trying to make more discoveries about dinosaurs.

Dinosaurs were of many sizes and shapes. Some were as small as chickens, while some were about 90 feet long.

There were also terrible rights between dinosaurs. They night have happened more than 100 million years ago. Though there was no man to see any of the fights, we can be told by the animal’s footprints(足迹)that fights did take place .

64. According to the passage, dinosaurs did exist only on the earth _______.

A. for millions of year

B. millions of years ago

C. more than 100 million years ago

D. when it was warm and wet somewhere

65. One reason why dinosaurs died out is that __________.

A. there were too many dinosaurs

B. parts of the earth became cold and dry

C. the dead forests there could not supply them with enough food

D. they couldn’t find enough go eat

66. One more reason why dinosaurs died out may be that _______.

A. new kinds of animals came on the earth

B. some fast and strong animals with big brains could kill them

C. some dinosaurs were as small as chickens

D. some big dinosaurs died in the fights

67. We can see from this passage ________.

A. scientists are trying to make some dinosaurs

B. dinosaurs are dangerous enough

C. dinosaurs are worth studying

D. scientists know nothing about dinosaurs

D

The blue tits(山雀) have been inspecting the nest-box again this year. The male is the house-hunter but the female will make the final choice. He lands at the hole and turns his head to expose his white cheeks as a signal to attract the female from where she has been feeding.

Among many birds that nest in holes, the male has a light-coloured patch on its plumage(鸟羽) which acts as signal for drawing the female’s attention to a suitable nesting-place. Unlike the blue tit, the redstart(红尾鸲) may be only the male that strikingly coloured and the female is not beautiful.

A few years ago I was lucky enough to spot a pair of redstarts in action in a Walsh wood. The male was leading an interested female to holes that he had previously(先前) checked out. He sat at the entrance of each hole and put his head on to show off his white forehead, or his head in to reveal(显露) his tail.

If the female failed to react to his visual signals, the male sometimes sang for extra effect, while gliding towards her on spread wings and tail. Once the female accepts by following the male through the hole the displays stop, you must be at the right place at the right time to watch them.

68 How do the blue tits choose their nest?

A. They choose their nest together.

B. The male chooses their nest.

C. The house-hunter chooses their nest.

D. The female chooses their nest.

69. The writer was lucky to see ________.

A. how the male made his tricks

B. how an interested female played with the male happily

C. what the male displayed and won the female

D. that the male tried his best but failed to attract the female

70. You can spot a pair of redstarts in a Walsh wood ________.

A. at any time

B. regularly

C. in April

D. occasionally

71. The writer is probably ________.

A. a bird expert

B. a bird-hunter

C. a bird raiser

D. a scientist

E

With only about 1, 000 pandas left in the world, China is desperately trying to clone(克隆) the animal and save the endangered species(物种). That’s a move similar to what a Texas A & M University researchers have been undertaking for the past five years in a project called “Noah’s Ark”.

Noah’s Ark is aimed at collecting eggs, embryos(胚胎), semen and DNA of endangered animals and storing them in liquid nitrogen. If certain species should become extinct, Dr. Duane Kraemer, a professor in Texas A & M’s College of Veterinary Medicine, says there would be enough of the basic building blocks to reintroduce the species in the future.

It is estimated that as many as 2, 000 species of mammals, birds reptiles will become extinct in over 100 years. The panda, native only to China, is in danger of becoming extinct in the next 25 years.

This week, Chinese scientists said they grew an embryo by introducing cells from a dead female panda into the egg cells of a Japanese white rabbit. They are now trying to implant the embryo into a host animal.

The entire procedure could take from three to five years to complete.

“The nuclear transfer(核子移植) of one species to another is not easy, and the lack of available(capable of being used) panda eggs could be a major problem,” Kraemer b elieves. “They will probably have to do several hundred transfers to result in one pregnancy (having a baby). It takes a long time and it’s difficult, but this could be groundbreaking science if it works. They are certainly not putting any live pandas at r isk, so it is worth the effort,” adds Kraemer, who is one of the leaders of the Project at Texas A& M, the first-ever attempt at cloning a dog.

“They are trying to do something that’s never been done, and this is very similar to our work in Noah’s Ark. We’re both trying to save animals that face extinction.

I certainly appreciate their effort and there’s a lot we can learn from what they are attempting to do. It’s a research that is very much needed.”

72. The aim of “Noah’s Ark” project is to _______.

A. make efforts to clone the endangered pandas

B. save endangered animals from dying out

C. collect DNA of endangered animals to study

D. transfer the nuclear of one animal to another

73. According to Professor Kraemer, the major problem in cloning pandas would be the lack of _______.

A. available panda eggs

B. host animals

C. qualified researchers

D. enough money

74. The best title for the passage may be _______.

A. China’s Success in Pandas Cloning

B. The First Cloned Panda in the World

C. Exploring the Possibility to Clone Pandas

D. China —the Native Place of Pandas Forever

75. From the passage we know that _______.

A. Kraemer and his team have succeeded in cloning a dog

B. scientists try to i mplant a panda’s egg into a rabbit

C. Kraemer will work with Chinese scientists in clone researches

D. about two thousand of species will probably die out in a century

第二卷

第一节阅读表达

Do you want to live another 100 years or more? Some exports say that scientific advances will one day enable humans to last tens of years beyond what is now seen as the natural limit of the human life span.

“I think we are knowing at the door of immortality(永生).”said Michael Zey, a Montclair State University business professor and author of two books on the future. “I think by 2075____________________________ and that’s a conservative estimate(保守估计的).”

At the conference in San Francisco, Donald Louria, a professor and author at New Jersey Medical School in Newwark said advances in using genes as well as nanotechnology （纳米技术）make it likely that humans will live in the future beyond what has been possible in the past. “There is a great push so that people can live from 120 to 180 years.” He said.“Some have suggested that there is no limit and that people could live to 200 or 300 or 500 years.”

However, many scientists who specialize in aging are doubted about it and say the human body is just not designed to last past about 120 years. Even with healthier lifestyles and less disease, they say failure of the brain and organs will finally lead all humans to death.

Scientists also differ on what kind of life the super aged might live. “It remains to be seen if you pass 120, you know; could you be healthy enough to have good quality of life? ”said Leonard Poon, director of the University of George Gerontology Centre. “At present people who could get to that point are not in good health at all.”

76. What is the best title of the passage? (Please answer within 10 words)

_______________________________________________________________________________ 77. Which sentence in the passage can be replaced by the following one?

We have got some ideas about living longer.

_______________________________________________________________________________ 78. Please fill in the blank in the second paragraph with proper words or phrases to complete the sentence. (Pease answer with 10 words)

_______________________________________________________________________________ 79. Do you think it is possible for humans to live longer in the future? (Please answer within 30 words)

_______________________________________________________________________________ 80. Translate the underlined sentence in the last paragraph into Chinese.

_______________________________________________________________________________ 第二节书面表达

下面是你班班会上以“中学生是否能佩带手机”为题进行讨论的情况。请你写一封信给

Dear Sir,

I'm writing to tell you ______

________________________________________________________________________________

________________________________________________________________________________

________________________________________________________________________________

________________________________________________________________________________

________________________________________________________________________________

__________________________________________________________

Best wishes

Yours

Kate

答案及解析：

单项选择

21. D. a variety of 各种各样的； species前面不能加a, group意思是“让”；amount表

示“量”。

22. C give out 发出，放出光、热、气味等；give in 屈服，让步；give up放弃；give over

交付，托付。

23. B come across 偶然发现或遇见；come along到达，出现；come around to转变成与某

人一致的意见；come about 发生。

24. D conflict争论，摩擦，冲突；contact接触，联系，交往；contrast对比；对照；connection

联系，关系。

25. C 此题考查强调句型，强调用not until引导的时间状语从句，即“It is / was not until……that……”。

26. A date back to 或date from表示“从……开始，始于……时间，追溯到……”。

27. B appeal to sb. 对……有吸引力,句意：设计应当雅俗共赏，老少皆宜。appear 看起

来好像是；suit, fit是及物动词，不与to连用。

28. D offer 与provide 的用法分别为：offer 后跟双宾语，即：offer sb. sth.；provide

要用下列形式：provide sb. with sth. 和provide sth. for sb.。

29. C provide 常用于explain to sb. sth或explain sth. to sb. 结构。

30. B eventually最后,终于；typically典型地，典型的做法是；particularly特别地；

especially尤其地；特别地；句意：典型的做法是，他会来晚然后说对不起。

31. A attach (to) 附加，系上，附上，attack袭击，攻击；attract吸引；attribute把……

归功于，是由于……。

32. A show 后要跟双宾语，即show sb. sth. ;把……忘在哪儿要用“forget sth. + 介词

+地点。”

33. D。考查冠词。be in danger of为固定短语，意为“有……危险的”。

34. D。考查非谓语动词。此处应用不定式的主动形式表示被动意义。

35. C。考查短语动词。hold out for意为“坚持要……”。

36. C。考查时态。根据语境可知，Alice过去打篮球和网球，但现在已放弃，故此空用一般

过去时。

37. D。考查动词短语。die away表示“（风、声音等）渐息，渐弱”。

38. D。考查非谓语动词。过去分词短语作原因状语，相当于原因状语从句Because he was

left in the care of his grandmother.

39. C。考查交际用语。that depends表示“视情况而定”。

40. A。考查名词性从句。第一空用what引导主语从句；第二空用where引导宾语从句。

完形填空

36.C 根据后文可知，天正“下着雨”。

37.A 余者不及signing含义准确。

38.D A、B不能接sth. to do ,C接sth. to do 时作“认为”讲，在此不合语境。

39.C 打车的人当然希望过往的出租车能“停”下来。

40.A 根据语境可排除B、C、D（thought）接从句时，一般作“认为”讲，不合文意。

41.D 全句意思为：我要是不曾有乘“出租车”这一念头该多好啊！car表意不准确，它除了

指出租车外，还可指其它车子。

42.B “脱下”帽子以便倒掉积水。

43.B 将水从帽边倒“出”。

44.A 从第十九个空格后的without understanding what the driver had said to me中可判断出。

45.D 告诉司机的应是所去的地方，即“地址”。余者不合习惯表示法。

46.B 从他不再向住宅区送客来看，他已“下”班。

47.C pick up系固定搭配，意为“搭载”。

48.D 根据习惯表达法选定。

49.A “到这时为止”雨下得更大了。

50.C 鸣喇叭来催促的车子一定是“在后面”。

51.B 鸣喇叭是“要求”前面的车子启动。余者不合语境。

52.A 根据从句谓语的虚拟语气形式选定。

53.C 从词的用法角度考虑。

54.C 我知道在未明白司机话的情况下，我“不该”上车。

55.B 从句表示的是让步关系。

阅读理解

56. B（细节理解题。从第一段第二、三行可以找到答案）。

57. C（辨别正误题。根据第三段的“Nearly 15,000 plant species are native to Yunnan Province”可以判断C项错误，而其他三项的表述都可从文中找出证据证明它们是正确的，所以答案是C项。）

58. A（细节理解题。从末段的第二、三行可以得知答案。）

59. D（观点态度题。末段第一行表明了作者对旅游业的看法是兼顾利与弊，这才是最客观的观点，所以正确答案是D项。）

60. C 从第一段第一句话可以看出，哈雷的发现是在研究其他科学家的观察中得出的，其它选项与本文内容不符。

61. B 首先确定彗星下次出现的时间是1758年，然后确定这一事件距离他预测的时间是53年，再用1758减去53年就可以得出正确答案。

62. D 通读全文，就可以看出全文的大意，文章的每一段都在介绍哈雷及他的发现，另外也可以从文章的首尾句看出本文的主旨大意。

63. C 本文第一句话说哈雷是一个英国科学家，故A项是错误的；从第二句可以看出，哈雷的发现是在研究其他科学家观察的基础上得出的，所以B项是错误的；从第二段最后一句可得知哈雷彗星的轨道是椭圆形的，所以排除D项。本题题材还可以根据自己的常识来选出C 项为正确答案。

64. B （文章第一句话“Millions of years ago dinosaurs lived on the earth.”可知恐龙生活于几百万年前。）

65. D（文章第一段介绍恐龙灭绝的一个原因是缺乏食物，而B项是导致食物缺乏的一个原因。）

66. B（第二段介绍恐龙灭绝的另一个原因是出现了更大、更强、更聪明的生物，它们有可能把恐龙杀灭。）

67. C（从文章第三段第二句话“Scientists are trying to make more discoveries about dinosaurs.”可知，科学家正在对恐龙进行更进一步的研究，由此推知恐龙值得研究。）

68. D 细节题。从第1段第2句话The male is the house-hunter but the female will make the final choice 可以做出正确选择。

69. C 判断题。从第3段第1句I was lucky enough to spot a pair of redstarts in action in a Walsh wood 和文章第三、四段的内容可知答案为C。

70. D 语义理解题。根据A few years ago I was lucky enough to…和…you must be at the right place at the right time to see them 可知答案为D。

71. A 推断题。从文章内容来看，文中不仅提到了鸟的一些习性，而且对雄鸟如何吸引雌鸟入巢了解得很清楚，可见作者可能是一位研究鸟类的专家。

72. B 语义理解题。从第2段内容可知，“诺亚方舟”工程的目标是把濒临灭绝的动物的蛋(卵)、胚胎、精液和DNA储存在液体氮中，如果某一种动物濒临灭绝时，将来可以重现这一动物。

73. A 细节题。从第6段第1句话 The nuclear transfer(核子移植) of one species to another is not easy, and the lack of available (capable of being used ) panda eggs could be a major problem 可以做出正确判断。

74. C 主旨题。从文章内容来看，无论是中国还是世界克隆熊猫还没有成功，所以排除A、B 项；D项内容明显与文章内容不符，故排除。所以“探索克隆熊猫的可能性”应该是这篇文章的标题。

75. D 判断题。此题B项的干扰性较强，但由于它没有说明是Chinese scientists，所以应

排除。A、C项明显与原文不符。根据文章第3段第1句可知答案非D莫属。

阅读表达

76. Living Longer or Not

77. I think we are knocking at the door of immortality.

78. we will see it / we can reach that goal

79. With science and technology developing quickly I think it is possible for humans to live longer in the future and more people are paying more attention to their health.

80. “我们还不知道，如果你活过了120岁，你能有足够健康的身体保证你能有好的生活质量吗？”

书面表达：

Dear Sir,

I'm writing to tell you something about our discussion on the topic“Whether Middle School Students Can Carry Mobile phones (Cell-phones)" at the class meeting.

Forty percent students agreed, for they thought it was convenient for them to communicate with their relatives and friends. They also thought they could surf the Internet to search for some information and store some useful information in the m. Besides, they could play games for rest if they feel tired after a long time's study.

However, sixty percent of us were against it. They said the radiation of cell-phones was harmful to health, and the ringing sound did somewhat affect the cell-phone holders and others. Also, cell-phones were luxurious things for middle school students and it was easy to lead them to compare with each other.

As far as I am concerned, I agree with the majority. It is not suitable for middle school students to have cell-phones. We can get in touch with others by other means and we can read more books to enrich ourselves.

Best wishes.

Yours

Kate