- 完形填空
题干:AreweatthebeginningofanotherAgeofExploration?Perhapsevenmoreimportantly,areweatthebeginningof(1)AgeofColonization?Asthepopulationoftheworldincreasestowardsthepoint(2)theearthcannolongersupportallthepeople(3)onit,thesecondquestionbecomesurgent.Willwediscoveranewworld,(4)Columbusdid,onwhichhumanlifewillbepossible?Atthispointinthespaceage,noonecanreallyanswerthesequestions.Wecansay,(5),thatwewillnotseetomorrowthekindofspacetravelthat(6)fictionandthemovieshaveshown.Itwillbealongtimebeforewehaveflightsthatrun(7)tohumancoloniesonthemoonorononeoftheplanets.Wearenotevengoingtobeableto(8)immediateadvantagesofthemineralsthatwemayfindontheplanets(9)ourownsolarsystem.Greatproblemsmustbesolved(10)wecouldsendcolonistsoutintospace.Thedistancesthatmustbe(11)andthelengthoftimeittakestodothatcanhardlybe(12).Therearealsodangersthatwestilldonotreallyunderstandfromradiation,forexample,orfrompiecesofmatters(13)inspace,orfromcontaminationfromformsoflifethatmight(14)there.Thereisalsoneedforhumanstotaketheirownenvironmentintospace(15)them.Sofarno"island"hasbeendiscoveredinspaceonwhichpeoplecanexistwithoutsystemsthat(16)life,andthesesystemsmustaccompanyanyfuturespace(17).Finally,onthemostpractical(18),therehastobeenormousexpense(19)inspaceexploration.TheU.S.andRussiangovernmenthavealreadyspentbillionsofdollarsforprojects(20)whichtheycanreceiveareturnonlyinknowledgeandnotinmoney.
题目:(1) - A 、another
- B 、an
- C 、the
- D 、one
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参考答案
【正确答案:A】
语义衔接。冠词和不定代词之间的选择,空格处与前句中的another相呼应,因而选项A:another正确。
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