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