高中英语人教版 (新课标)选修9&10Unit 4 Exploring planets单元测试课时练习

这是一份高中英语人教版 (新课标)选修9&10Unit 4 Exploring planets单元测试课时练习，共12页。

I. 单项选择
21. In the btanical garden we can find a(n) _______ f plants that range frm tall trees t small flwers.
A. species B. grups C. amunt D. variety
22. This is a very special flwer and it can _______ a strng sweet perfume at night.
A. give in B. give up C. give ut D. give ut
23. If yu _______ a mistake in reviewing the reprt, please bring it t my attentin.
A. cme alng B. cme acrss C. cme arund t D. cme abut
24. In dealing with public relatins, we shuld make every effrt t prevent the _______ in persnality.
A. cntact B. cntrast C. cnnectin D. cnflict
25. It was __________ back hme after he finished the reprt.
A. nt until midnight did he g B. until midnight that he didn't g
C. nt until midnight that he went D. until midnight when he didn't went
26. They are s clse friends and their friendship ________ cllege days.
A. dates back t B. dates back C. dates t D. dates back frm
27. — Can yu give me sme advice abut the design?
— I think it shuld _______ t all ages and scial grups.
A. appear B. appeal C. suit D. fit
28. The gvernment nt nly ________ the refugees（难民）huses t live in, but als _______ them with fd and clthes.
A. ffered; ffered B. prvided; prvided
C. prvided; ffered D. ffered; prvided
29. The teacher ______ several times, but he still didn't understand it.
A. explained Jhn the sentence B. explained the sentence fr Jhn
C. explained t Jhn the sentence D. explained abut the sentence t Jhn
30. ______, he wuld cme in late and then say he was srry.
A. eventually B. typically C. particularly D. especially
31. There was a nice little present fr everyne, with a suitable pem _______ t it.
A. attached B. attacked C. attracted D. attributed
32. — Please ______ yur passprt.
— I'm srry, but I _______ in my hme.
A. shw me; left it B. shw t me; left it
C. shw me; frgt it D. shw t me; frgt it
33. Accrding t recent reprts, ne f the rare animals, ____ crcdile, is in ____ danger f dying ut.
A. a; the B. 不填; a C. 不填; the D. the; 不填
34. — Did yu have any difficulty catching yesterday's lecture?
—N. The prfessr spke very clearly t make his speech easy ____.
A. understd B. understand
C. understanding D. t understand
35. —Why did Miss Li leave the jb?
—She ____ fr higher wages, but was turned dwn in the end.
A. brke ff B. gave away C. held ut D. picked up
36. —Is Alice playing bth basketball and tennis fr yur schl?
—She ____. But nw she has given up playing basketball.
A. is B. has C. was D. had
37. All the children n the playgrund stared up int the sky until the nise f the plane ____.
A. gave up B. tk ff
C. went ut D. died away
38. ____ in the care f his grandmther, Ted grew t be a by with very gd manners.
A. Leaving B. T be left
C. T leave D. Left
39. — D yu think living in the cuntry has advantages?
—____.
A. Yes, perfectly B. Yes, it is
C. Well, that depends D. Nthing at all
40. ____ surprises us mst is that she desn't even knw ____ the difference between the tw lies.
A. What; where B. What; which
C. What; what D. That; where
II 完形填空
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 t taking a bus hme, but last night it was __36__ and I decided t ride in a taxi. I std n the side-walk __37__ t each car that passed. I __38__ each ne t __39__, but nne wuld. Then I __40__ that it was the time f day when ne grup f taxi drivers stpped and anther began wrk. I began t wish that I hadn't had the idea f taking a __41___. I was all wet. I __42_ my hat t pur __43__ the water that had cllected in the brim（帽边）.
At that mment, a taxi stpped in frnt f me and the driver said smething that I didn't __44__. I quickly jumped in and sat dwn. “Where d yu want t g ?” he asked me. I gave him my __45__. “That's uptwn （向住宅区）, sir,” he said. “I'm __46__ duty nw. I was just t __47__ yu up if yu were ging my __48_. “__49__ this time it was raining harder. Cars were stpped __50__ the taxi. Their kncking hrns（喇叭）were beginning t __51__ that we mve. I __52_ I had knwn what t d! I felt like insisting that the taxi driver __53__ me hme. But at the same time, I knew that I __54_ have gtten int the taxi withut understanding what the driver had said t me. Tw mre blasts（鸣笛）frm smebdy's hrn made the driver demand that I make up my mind. I gt ut, _55__ I didn't want t.
36. A. late B. dark C. raining D. snwing
37. A. signing B. shwing C. shaking D. ndding
38. A. hped B. thught C. cnsidered D. expected
39. A. pass B. pause C. stp D. stand
40. A. remembered B. frgt C. imagined D. thught
41. A. walk B. car C. bus D. taxi
42. A. put n B. tk ff C. put away D. picked up
43. A. ff B. ut C. away D. int
44. A. understand B. ntice C. hear D. listen
45.A. place B. huse C. hme D. address
46.A. frm B. ff C. t D. n
47.A. take B. bring C. pick D. keep
48.A. directin B. rad C. path D. way
49.A. By B. On C. During D. In
50.A. at B. in frnt f C. behind D. beside
51.A. rder B. demand C. suggest D. encurage
52.A. wished B. hped C. hated D. regretted
53.A. get B. send C. take D. fetch
54.A. mustn't B. culdn't C. shuldn't D. mightn't
55.A. as if B. althugh C. s D. and
III 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
Frm the jagged (锯齿状的) peaks f the Himalayas t the pwerful Yangtze River that flws int the Pacific, China's vast terrain (地带) and varied climate make it the sixth mst bilgically diverse natin n the planet.
Since 1998, The Nature Cnservancy has been wrking in China's nrthwest Yunnan Prvince t prtect sme f the amazing natural and cultural diversity unique t this cuntry fr its future generatins. In cperatin with Chinese lcal and state gvernment agencies, the Cnservancy established the Yunnan Great Rivers Prject, which prtects an area abut the size f West Virginia.
Did yu knw?
●China cntains 10% f the wrld's ttal species.
●At least 15% f China's mammal species and 8% f its bird species are fund nwhere else n Earth.
●Nearly 15,000 plant species are native t Yunnan Prvince.
●Yunnan is hme t 75% f Tibetan medicinal herbs and 30 endangered species.
What is the Nature Cnservancy trying t d?
Educatin fr Sustainability (可持续性)
The Nature Cnservancy recgnizes that envirnmental educatin is an imprtant element f wrking clsely with lcal cmmunities t achieve sustainable cnservatin results. In respnse, the Cnservancy launched a new prgram called Educatin fr Sustainability which tests means f teaching and learning that cmbine cnservatin gals, scial justice, and apprpriate develpment and participatin in a visin and missin fr persnal and scial change.
Prmting Green Turism
Turism is bth an envirnmental threat and an ecnmic pprtunity, with the ptential t prvide extremely needed incme t nrthwest Yunnan. The Cnservancy is wrking with lcal cmmunities, gvernment agencies, and turism ,enterprises(企业) t develp strategies fr “green” turism which will limit the ftprint f mass turism while generating incme fr lcal peple. In additin t cmbining turism develpment and management at ur five actin sites, we assisted with reginal marketing effrts t prmte ec-turism pprtunities.
56. China ranks _______ amng the mst bilgically diverse natins n the planet.
A. tenth B. sixthC. fifteenthD. eighth
57. Which f the fllwing statements is NOT true accrding t the text?
A. The Nature Cnservancy has been wrking in China's
B. The Nature Cnservancy cperated agencies in the Yunnan Great Rivers Prject.
C. Nearly 10% f the wrld's plant species are native t Yunnan Prvince.
D. Fr the mment the Nature Cnservancy is devting itself t educatin fr sustainability as well as ec-turism.
58. T develp strategies fr ec-turism, the Nature Cnservancy is wrking with the fllwing EXCEPT _________.
A. West Virginia B. lcal cmmunities
C. gvernment agenciesD. turism enterprises
59. Which f the fllwing best shws the authr's attitude twards turism?
A. We shuld greatly prmte turism as it has n disadvantages.
B. Turism is extremely helpful t peple in Yunnan.
C. Turism des n gd t ur envirnment.
D. Turism is an pprtunity fr the ecnmy as well as threat t the envirnment.
B
Edmund Halley was an English scientist wh lived ver 200years ag. He studied the bservatins f cmets which ther scientists had made. The rbit f ne particular cmet was a very difficult mathematical prblem. He culd nt figure it ut. Neither culd ther scientists wh dealt with such prblems.
Hwever, Halley had a friend named Isaac Newtn. Wh was a brilliant mathematician. Newtn thught he had already which he had dne it. He tld Halley that the rbit f a cmet had the shape f an ellipse.
Nw Halley set t wrk. He figured ut the rbits f sme f the cmets that had been bserved by scientist. He made a surprising discvery. The cmets that had appeared in the years 1531, 1607 and 1682 all had the same rbit. Yet their appearances had been 75 t 76 years apart.
This seemed very strange t Halley. Three different cmets fllwed the same rbit. The mre Halley thught abut it, the mre he thught that there had nt been three different cmets, as peple thught. He decided that they had simply seen the same cmet three times. The cmet had gne away and had cme back again.
It was an astnishing idea! Halley felt certain enugh t make a predictin f what wuld happen in the future. He decided that this cmet wuld appear in the year 1758. There were 53 years t g befre Halley's predictin culd be tested.
In 1758 the cmet appeared in the sky. Halley did nt see it, fr he had died sme years befre. Ever since then that cmet been called Halley's cmet, in his hnr.
60. Halley made his discvery ______.
A. by ding experiments B. by means f his wn careful bservatin
C. by using the wrk f ther scientists D. by chance
61. Halley made a surprising but crrect predictin in the year ________.
A.1704B.1705C. 1706D.1707
62. This text in general is abut _______.
A. Halley and ther scientists B. the rbit f a cmet
C. Newtn and HalleyD. Halley and Halley
63. Which f the fllwing is TRUE?
A. Edmund Halley was an American scientist.
B. Halley made his discvery by ding experiments.
C. Isaac Newtn was a famus mathematician.
D. The rbit f a cmet had the shape f an arund.
C
Millins f years ag dinsaurs lived n the earth. In the days f dinsaurs, the whle earth was warm and wet. There were green frests and they culd find enugh t eat. Later, parts f the earth became cld and dry, and the frests there died. Then dinsaurs culd nt find enugh t eat. This must be ne reasn why dinsaurs died ut.
We can guess anther reasn. New kinds f animals came n the earth. Sme had big brains and strng .They culd kill dinsaurs.
There may be ther reasns that we dn't knw abut yet. Scientists are are trying t make mre discveries abut dinsaurs.
Dinsaurs were f many sizes and shapes. Sme were as small as chickens, while sme were abut 90 feet lng.
There were als terrible rights between dinsaurs. They night have happened mre than 100 millin years ag. Thugh there was n man t see any f the fights, we can be tld by the animal's ftprints(足迹)that fights did take place .
64. Accrding t the passage, dinsaurs did exist nly n the earth _______.
A. fr millins f year B. millins f years ag
C. mre than 100 millin years agD. when it was warm and wet smewhere
65. One reasn why dinsaurs died ut is that __________.
A. there were t many dinsaurs
B. parts f the earth became cld and dry
C. the dead frests there culd nt supply them with enugh fd
D. they culdn't find enugh g eat
66. One mre reasn why dinsaurs died ut may be that _______.
A. new kinds f animals came n the earth
B. sme fast and strng animals with big brains culd kill them
C. sme dinsaurs were as small as chickens
D. sme big dinsaurs died in the fights
67. We can see frm this passage ________.
A. scientists are trying t make sme dinsaurs
B. dinsaurs are dangerus enugh
C. dinsaurs are wrth studying
D. scientists knw nthing abut dinsaurs
D
The blue tits(山雀) have been inspecting the nest-bx again this year. The male is the huse-hunter but the female will make the final chice. He lands at the hle and turns his head t expse his white cheeks as a signal t attract the female frm where she has been feeding.
Amng many birds that nest in hles, the male has a light-clured patch n its plumage(鸟羽) which acts as signal fr drawing the female's attentin t a suitable nesting-place. Unlike the blue tit, the redstart(红尾鸲) may be nly the male that strikingly clured and the female is nt beautiful.
A few years ag I was lucky enugh t spt a pair f redstarts in actin in a Walsh wd. The male was leading an interested female t hles that he had previusly(先前) checked ut. He sat at the entrance f each hle and put his head n t shw ff his white frehead, r his head in t reveal(显露) his tail.
If the female failed t react t his visual signals, the male smetimes sang fr extra effect, while gliding twards her n spread wings and tail. Once the female accepts by fllwing the male thrugh the hle the displays stp, yu must be at the right place at the right time t watch them.
68 Hw d the blue tits chse their nest?
A. They chse their nest tgether.
B. The male chses their nest.
C. The huse-hunter chses their nest.
D. The female chses their nest.
69. The writer was lucky t see ________.
A. hw the male made his tricks
B. hw an interested female played with the male happily
C. what the male displayed and wn the female
D. that the male tried his best but failed t attract the female
70. Yu can spt a pair f redstarts in a Walsh wd ________.
A. at any timeB. regularly C. in April D. ccasinally
71. The writer is prbably ________.
A. a bird expert B. a bird-hunter
C. a bird raiser D. a scientist
E
With nly abut 1, 000 pandas left in the wrld, China is desperately trying t clne(克隆) the animal and save the endangered species(物种). That's a mve similar t what a Texas A & M University researchers have been undertaking fr the past five years in a prject called “Nah's Ark”.
Nah's Ark is aimed at cllecting eggs, embrys(胚胎), semen and DNA f endangered animals and string them in liquid nitrgen. If certain species shuld becme extinct, Dr. Duane Kraemer, a prfessr in Texas A & M's Cllege f Veterinary Medicine, says there wuld be enugh f the basic building blcks t reintrduce the species in the future.
It is estimated that as many as 2, 000 species f mammals, birds reptiles will becme extinct in ver 100 years. The panda, native nly t China, is in danger f becming extinct in the next 25 years.
This week, Chinese scientists said they grew an embry by intrducing cells frm a dead female panda int the egg cells f a Japanese white rabbit. They are nw trying t implant the embry int a hst animal.
The entire prcedure culd take frm three t five years t cmplete.
“The nuclear transfer(核子移植) f ne species t anther is nt easy, and the lack f available(capable f being used) panda eggs culd be a majr prblem,” Kraemer believes. “They will prbably have t d several hundred transfers t result in ne pregnancy (having a baby). It takes a lng time and it's difficult, but this culd be grundbreaking science if it wrks. They are certainly nt putting any live pandas at risk, s it is wrth the effrt,” adds Kraemer, wh is ne f the leaders f the Prject at Texas A& M, the first-ever attempt at clning a dg.
“They are trying t d smething that's never been dne, and this is very similar t ur wrk in Nah's Ark. We're bth trying t save animals that face extinctin. I certainly appreciate their effrt and there's a lt we can learn frm what they are attempting t d. It's a research that is very much needed.”
72. The aim f “Nah's Ark” prject is t _______.
A. make effrts t clne the endangered pandas
B. save endangered animals frm dying ut
C. cllect DNA f endangered animals t study
D. transfer the nuclear f ne animal t anther
73. Accrding t Prfessr Kraemer, the majr prblem in clning pandas wuld be the lack f _______.
A. available panda eggsB. hst animals
C. qualified researchersD. enugh mney
74. The best title fr the passage may be _______.
A. China's Success in Pandas Clning
B. The First Clned Panda in the Wrld
C. Explring the Pssibility t Clne Pandas
D. China —the Native Place f Pandas Frever
75. Frm the passage we knw that _______.
A. Kraemer and his team have succeeded in clning a dg
B. scientists try t implant a panda's egg int a rabbit
C. Kraemer will wrk with Chinese scientists in clne researches
D. abut tw thusand f species will prbably die ut in a century
IV 阅读表达
D yu want t live anther 100 years r mre? Sme exprts say that scientific advances will ne day enable humans t last tens f years beynd what is nw seen as the natural limit f the human life span.
“I think we are knwing at the dr f immrtality(永生).”said Michael Zey, a Mntclair State University business prfessr and authr f tw bks n the future. “I think by 2075____________________________ and that's a cnservative estimate(保守估计的).”
At the cnference in San Francisc, Dnald Luria, a prfessr and authr at New Jersey Medical Schl in Newwark said advances in using genes as well as nantechnlgy（纳米技术）make it likely that humans will live in the future beynd what has been pssible in the past. “There is a great push s that peple can live frm 120 t 180 years.” He said.“Sme have suggested that there is n limit and that peple culd live t 200 r 300 r 500 years.”
Hwever, many scientists wh specialize in aging are dubted abut it and say the human bdy is just nt designed t last past abut 120 years. Even with healthier lifestyles and less disease, they say failure f the brain and rgans will finally lead all humans t death.
Scientists als differ n what kind f life the super aged might live. “It remains t be seen if yu pass 120, yu knw; culd yu be healthy enugh t have gd quality f life? ” said Lenard Pn, directr f the University f Gerge Gerntlgy Centre. “At present peple wh culd get t that pint are nt in gd health at all.”
76. What is the best title f the passage? (Please answer within 10 wrds)
_______________________________________________________________________________
77. Which sentence in the passage can be replaced by the fllwing ne?
We have gt sme ideas abut living lnger.
_______________________________________________________________________________
78. Please fill in the blank in the secnd paragraph with prper wrds r phrases t cmplete the sentence. (Pease answer with 10 wrds)
_______________________________________________________________________________
79. D yu think it is pssible fr humans t live lnger in the future? (Please answer within 30 wrds)
_______________________________________________________________________________
80. Translate the underlined sentence in the last paragraph int Chinese.
_______________________________________________________________________________
V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21st Century报的编辑说明该情况，并附带表明你自己的观点。
注意：1.要包含所有的要点，但不要逐条翻译；2.字数约100字。3.信的开头和结尾已写好
Dear Sir,
I'm writing t tell yu
__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Best wishes
Yurs
Kate
参考答案：
单项选择
21. D. a variety f 各种各样的； species前面不能加a, grup意思是“让”；amunt表示“量”。
22. C give ut 发出，放出光、热、气味等；give in 屈服，让步；give up放弃；give ver交付，托付。
23. B cme acrss 偶然发现或遇见；cme alng到达，出现；cme arund t转变成与某人一致的意见；cme abut 发生。
24. D cnflict争论，摩擦，冲突；cntact接触，联系，交往；cntrast对比；对照；cnnectin联系，关系。
25. C 此题考查强调句型，强调用nt until引导的时间状语从句，即“It is / was nt until……that……”。
26. A date back t 或date frm表示“从……开始，始于……时间，追溯到……”。
27. B appeal t 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t连用。
28. D ffer 与prvide 的用法分别为：ffer 后跟双宾语，即：ffer sb. sth.；prvide 要用下列形式：prvide sb. with sth. 和prvide sth. fr sb.。
29. C prvide 常用于explain t sb. sth或explain sth. t 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 (t) 附加，系上，附上，attack袭击，攻击；attract吸引；attribute把 ……归功于，是由于……。
32. A shw 后要跟双宾语，即shw sb. sth. ;把……忘在哪儿要用“frget sth. + 介词+地点。”
33. D。考查冠词。be in danger f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。hld ut fr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 f his grandmther.
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. t d ,C接sth. t d 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（thught）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withut understanding what the driver had said t 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 t Yunnan Prvince”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“Millins f years ag dinsaurs lived n 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 t make mre discveries abut dinsaurs.”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 huse-hunter but the female will make the final chice 可以做出正确选择。
69. C 判断题。从第3段第1句I was lucky enugh t spt a pair f redstarts in actin in a Walsh wd 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 ag I was lucky enugh t…和…yu must be at the right place at the right time t 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) f ne species t anther is nt easy, and the lack f available (capable f being used ) panda eggs culd be a majr prblem 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 Lnger r Nt
77. I think we are kncking at the dr f immrtality.
78. we will see it / we can reach that gal
79. With science and technlgy develping quickly I think it is pssible fr humans t live lnger in the future and mre peple are paying mre attentin t 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 t tell yu smething abut ur discussin n the tpic“Whether Middle Schl Students Can Carry Mbile phnes (Cell-phnes)" at the class meeting.
Frty percent students agreed, fr they thught it was cnvenient fr them t cmmunicate with their relatives and friends. They als thught they culd surf the Internet t search fr sme infrmatin and stre sme useful infrmatin in the m. Besides, they culd play games fr rest if they feel tired after a lng time's study.
Hwever, sixty percent f us were against it. They said the radiatin f cell-phnes was harmful t health, and the ringing sund did smewhat affect the cell-phne hlders and thers. Als, cell-phnes were luxurius things fr middle schl students and it was easy t lead them t cmpare with each ther.
As far as I am cncerned, I agree with the majrity. It is nt suitable fr middle schl students t have cell-phnes. We can get in tuch with thers by ther means and we can read mre bks t enrich urselves.
Best wishes.
Yurs
Kate比例
40%学生赞同
60%学生不赞同
理由
1.便于同亲友联系；
2.可以上网查资料；
3.空余时间玩玩游戏调节大脑；
4.储存有用信息。
1.手机辐射对人健康有害；
2.响铃影响自己和他人学习；
3.属奢侈品；
4.容易引起相互攀比。