Unit1Buildingthefuture课外阅读练习阅读下列短文，从每篇短文后所给各题的四个选项中，选出最佳选项。NOTallmemoriesaresweet.Somepeoplespendalltheirlivestryingtoforgetbadexperiences.Violenceandtrafficaccidentscanleavepeoplewithterriblephysicalandemotionalscars.Oftentheyrelivetheseexperiencesinnightmares.NowAmericanresearchersthinktheyareclosetodevelopingapill,whichwillhelppeopleforgetbadmemories.Thepillisdesignedtobetakenimmediatelyafterafrighteningexperience.Theyhopeitmightreduce,orpossiblyerase(抹去),theeffectofpainfulmemories.InNovember,expertstestedadrugonpeopleintheUSandFrance.Thedrugstopsthebodyreleasingchemicalsthatfixmemoriesinthebrain.Sofartheresearchhassuggestedthatonlytheemotionaleffectsofmemoriesmaybereduced,notthatthememoriesareerased.Theresearchhascausedagreatdealofargument.Somethinkitisabadidea,whileotherssupportit.Supporterssayitcouldleadtopillsthatpreventortreatsoldiers'troublingmemoriesafterwar.Theysaythattherearemanypeoplewhosufferfromterriblememories."Somememoriescanruinpeople'slives.Theycomebacktoyouwhenyoudon'twanttohavetheminadaydreamornightmare.Theyusuallycomewithverypainfulemotions,"saidRogerPitman,aprofessorofpsychiatryatHarvardMedicalSchool."Thiscouldrelievealotofthatsuffering."Butthosewhoareagainsttheresearchsaythatchangingmemoriesisverydangerousbecausememoriesgiveusouridentity(特质).Theyalsohelpusallavoidthemistakesofthepast."Allofuscanthinkofbadeventsinourlivesthatwerehorribleatthetimebutmakeuswhoweare.I'mnotsurewewanttowipethosememoriesout,"saidRebeccaDresser,amedicalethicist.1.ThepassageismainlyaboutA.anargumentabouttheresearchonthepillB.anewmedicalinventionC.anewresearchonthepillD.awayoferasingpainfulmemories2.ThedrugtestedonpeoplecanA.causethebraintofixmemoriesB.preventbodyproducingcertainchemicalsC.stoppeoplerememberingbadexperiencesD.wipeouttheemotionaleffectsofmemories3.WecaninferfromthepassagethatA.thepillwillstoppeople'sbadexperiencesB.takingthepillwilldoharmtopeople'shealthC.thepillhasprobablybeenproducedinAmericaD.peopledoubttheeffectsofthepills4.WhichofthefollowingdoesRebeccaDresseragreewith?A.Somememoriescanruinpeople'slives.B.Experiencingbadeventsmakesusdifferentfromothers.C.Peoplewanttogetridofbadmemories.D.Thepillwillreducepeople'ssufferingsfrombadmemories.答案：ABDB
