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1、单元质量检测（三）(时间：100分钟 满分：120分)选择题部分Ⅰ.阅读理解(共10小题；每小题2.5分，满分25分)阅读下列短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。AWeallwanttobelievethatlaughterisgoodforwhatmakesusill,butthesciencebackingthatupisthin.Moststudieshavebeensmallandhavereliedonselfreportedassessments.However
2、,afewstudiesrelyingonlabtestingdoshowsomebenefits.“Abiglaughleadstotherelease(释放)ofendorphins(chemicalsthatcanmakeyoufeelhappier)fromthebrain，”saysMichaelMillerfromtheUniversityofMarylandMedicalCenter.A2005studybyMillermeasuredthebloodflowof20volunte
3、ersbeforeandafterwatchingafunnymovieandasadmovie.Afterthesadmovie,bloodflowwasmorerestrictedin14ofthe20viewers.Butafterthemoviethatmadethemlaugh,averagebloodflowincreasedby22percent.Financialbackingforlaughterandhumorresearchisweak—soweakthatwhenMary
4、Bennett,directoroftheWesternKentuckyUniversitySchoolofNursing,wantedtolookintotheeffectoflaughterontheimmune(免疫)system,shefoundherselfaskingotherresearchersforequipmentfromtheirlabs.“It'sreallyhardtogettakenseriouslywhenyousayyoustudylaughter，”shesay
5、s.Butherstudyof33healthywomen,publishedin2003,showedthatthosewholaughedatahumorousmoviehadhigherlevelsofnaturalkillercellactivity,whichincreasedtheirabilitytofightoffdisease.However,theeffectwasseenonlyinthesubjectswholaughedoutloud,notinthosewhoquie
6、tlywatchedthecomedy.Butmostoftheresearchonlaughterandhealthdependsonpersonalfeelingsoropinionsratherthanscientificfacts.Onestudyof70depressedelderlywomenfoundthatlaughteryogawasjustaseffectiveasexerciseinimprovingmood,asmeasuredbyselfsatisfactionrepo
7、rtsbysubjects.WhenBennettisaskedwhetherlaughtercuresorpreventsanydisease,herquickanswerisasimple“No.”Still,sheadds,“Ithinkit'sausefuladdontorealmedicine.Ifyou'rereceivingmedicinaltreatment,anythingyoucandotohelpyoustayhealthythroughsomethingunpleasan
8、twillhelp.”语篇解读：笑一笑，十年少。不过这一说法缺乏科学证据，目前针对笑的研究还很有限。1.Whatdoesthe2005studyshow?A．Funnymoviesmaycausebloodproblems.B．Endorphinsmaymakepeoplehappier.C．Sadmoviesareharmfultopatients.D．Laughtermaybenefithealth.解析：选D 推理判断题。由第二、三段可知，这项研究表明，笑可能有益健康。2．Whatisad
