1.Which came first,the chicken or the egg?This is one of life's (1)C questions and people have been debating about it for thousands of years.Now scientists believe they have solved this (2)A.Researchers from Sheffield and Warwick Universities in England discovered the answer (3)B.They used a super computer to observe the shell-making process while a new shell was (4)D.Then they found one protein called OC17that is (5)A for forming eggshell.This is only found inside a chicken's body,which is proof that the (6)C came first.The team was (7)B looking at how animals and birds make eggshells but suddenly made their surprising (8)D.The big question now is where chickens came from.The (9)A is from dinosaurs.
The research team said eggshells are one of nature's most (10)D creations.Professor John Harding from the team told reporters:"Understanding how chickens make eggshells is fascinating in itself,but it can also be (11)B in designing new materials."Eggshells are very lightweight but incredibly strong.Even the most up-to-date materials (12)C by the world's top engineers cannot produce anything as (13)A as an eggshell.Professor Harding added that (14)C eggshells could help to cure bone diseases and design materials for the construction industry."Nature has found wonderful ways that (15)B for all kinds of problems in materials science and technology-we can learn a lot from them."he said.

1.A.strangestB.bestC.oldestD.closest
2.A.puzzleB.factC.historyD.opinion
3.A.on purposeB.by chanceC.without hesitationD.a(chǎn)t work
4.A.breakingB.changingC.disappearingD.forming
5.A.necessaryB.easyC.kindD.impossible
6.A.eggB.eggshellC.chickenD.dinosaur
7.A.obviouslyB.originallyC.thoughtfullyD.surprisingly
8.A.inventionB.mistakeC.statementD.discovery
9.A.a(chǎn)nswerB.researchC.roadD.egg
10.A.commonB.ridiculousC.funnyD.a(chǎn)mazing
11.A.interestingB.helpfulC.normalD.correct
12.A.boughtB.cutC.designedD.carried
13.A.brilliantB.ordinaryC.1ightD.small
14.A.findingB.watchingC.studyingD.making
15.A.happenB.workC.waitD.look

分析 關(guān)于先有雞還是先有蛋這個(gè)問(wèn)題的爭(zhēng)論,在哲學(xué)和科學(xué)等許多領(lǐng)域都已經(jīng)持續(xù)了千百年.日前,英國(guó)科學(xué)家宣稱已經(jīng)破解了這個(gè)一直困擾著人類的謎題.研究證實(shí)先有雞后有蛋.

解答 1.C    2.A     3.B     4.D     5.A    6.C    7.B     8.D    9.A    10.D 11.B   12.C    13.A    14.C    15.B
1:C 考查形容詞詞義辨析根據(jù)for thousands of years可知,先有雞還是先有蛋,這是一個(gè)古老的問(wèn)題.A最奇怪的;B最好的;C最古老的;D最親密的.故選C.
2:A  考查名詞詞義Now scientists believe they have solved this   _科學(xué)家認(rèn)為他們已經(jīng)解決了這個(gè)難題.A難題;B事實(shí);C歷史;D觀點(diǎn).故選A.
3:B  考查動(dòng)詞詞義辨析discovered the answer    _偶然發(fā)現(xiàn)了答案.A故意;B偶然;C毫不猶豫;D在工作.故選B.
4:D  考查動(dòng)詞詞義辨析 observe the shell-making process while a new shell was     .觀察蛋殼形成過(guò)程,A破裂;B改變;C消失;D形成.故選D.
5:A   考查形容詞詞義辨析OC17 that is        for forming eggshellOC17是蛋殼形成所必需的.A必需的;B容易的;C友好的;D不可能的.故選A.
6:C   考查名詞詞義根據(jù)This is only found inside a chicken's body可知,這種蛋白質(zhì)只能在雞子體內(nèi)找到,因此先有雞.A雞蛋;B蛋殼;C雞;D恐龍.故選C.
7:B    考查副詞詞義but suddenly made their surprising    研究團(tuán)隊(duì)最初是在觀察蛋殼是怎樣形成的,意外發(fā)現(xiàn)了OC17這種物質(zhì).A明顯地;B起初,原來(lái);C考慮周到地;D驚訝地.故選B.
8:D   考查動(dòng)詞詞義 科學(xué)家們意外發(fā)現(xiàn)的這種物質(zhì).make a discovery發(fā)現(xiàn),A發(fā)明;B錯(cuò)誤;C陳述;D發(fā)現(xiàn).故選D.
9:A    考查名詞詞義The big question now is where chickens came from.The        is from dinosaurs與question對(duì)應(yīng)的應(yīng)該是答案,即answer.A答案;B研究;C道路;D雞蛋.故選A.
10:D    考查形容詞詞義蛋殼是自然界最令人驚異的發(fā)明之一.A普通的;B荒謬的;C滑稽的;D令人驚異的.故選D.
11:B 考查形容詞詞義  it can also be        in designing new materials蛋殼有助于設(shè)計(jì)新型材料.A有趣的;B有幫助的;C正常的;D正確的.故選B.
12:C  考查動(dòng)詞詞義 根據(jù)上一句的"designing new materials"可知,design與materials搭配,A購(gòu)買;B剪切;C設(shè)計(jì);D攜帶.故選C.
13:A   考查形容詞詞義世界頂級(jí)設(shè)計(jì)師也不能設(shè)計(jì)出像蛋殼那樣出色的材料.A出色的;B普通的;C輕的;D小的.故選A.
14:C   考查動(dòng)詞詞義      eggshells could help to cure bone diseases and design materials研究蛋殼能夠幫助治愈骨病,設(shè)計(jì)建筑材料.A找到;B觀察;C研究;D制作.故選C.
15:B  考查動(dòng)詞詞義 自然界蘊(yùn)含解決各種材料科學(xué)和技術(shù)方面的問(wèn)題的奇妙方法.A發(fā)生;B工作;C等待;D看.work for為…效力.故選B.

點(diǎn)評(píng) 完型填空,解題時(shí)要抓住文章的脈絡(luò),一定要讀懂全文,弄清文章要表達(dá)的思想,注意前后段落之間的關(guān)系.答題中,一定要認(rèn)真分析,注意選項(xiàng)與上下文的關(guān)系,與前后單詞的關(guān)系.對(duì)于一時(shí)沒(méi)有太大的把握的題可以放到最后再來(lái)完成,因?yàn)橛袝r(shí)答案可以從下文內(nèi)容體現(xiàn)出來(lái).答完后再通讀一篇文章,看看所選選項(xiàng)能不能是語(yǔ)句通順,語(yǔ)意連貫.

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