there is an english saying：“

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1、ThereisanEnglishsaying：“　　ThereisanEnglishsaying：“__1__”Untilrecently,fewpeopletookthesayingseriously.Now,however,doctorshavebeguntolookintolaughterandtheeffectsithasonthehumanbody.__2__　　Testswerecarriedouttostudytheeffectsoflaughteronthebody.Peoplewatchedfu

2、nnyfilmswhiledoctorscheckedtheirhearts,bloodpressure,breathingandmuscles.Itwasfoundthatlaughterhassimilareffectstophysicalexercise.__3__Iflaughterexercisesthebody,itmustbebeneficial.　　Othertestshaveshownthatlaughterappearstobeabletoreducetheeffectofpainontheb

3、ody.Inoneexperimentdoctorsproducedpainingroupsofstudentswholistenedtodifferentradioprograms.Thegroupthattolerated(忍耐)thepainforthelongesttimewasthegroupwhichlistenedtoafunnyprogram.__4__　　__5__Theyhavefoundthateveniftheirpatientsdonotreallyfeell　　　　ikelaughin

4、g,makingthemsmileisenoughtoproducebeneficialeffectssimilartothosecausedbylaughter.　　A．Laughtercanprolongone’slife.　　B．Asaresultofthesediscoveries,somedoctorsintheUnitedStatesnowholdlaughterclinicsinwhichtheyhelptoimprovetheirpatients’conditionbyencouragingthe

5、mtolaugh.　　C．Thereasonwhylaughtercanreducepainseemstobethatithelpstoproduceakindofchemicalsinthebrainwhichdiminishbothstressandpain.　　D．Itincreasesbloodpressure,theheartbeatingandbreathing；italsoworksseveralgroupsofmusclesintheface,thestomachandeventhefeet.　　

6、E．Althoughlaughterhelpscurethedisease,doctorsstillcannotputthistheoryintoclinicpractice.　　F．Laughteristhebestmedicine.　　G．Theyhavefoundthatlaughterreallycanimprovepeople’shealth.　　解读：医生通过实验证明，好心情也是一剂良药。　　1．解析：下文医生所做的实验表明笑有助于身体健康，缓解疼痛等，可推断出F“笑是最好的良药”符合文意。　　　　>

7、　　答案：F　　2．解析：根据下文的Itwasfoundthatlaughterhassimilareffectstophysicalexercise.可知，医生发现笑与锻炼身体有着相同的功效。由此推断，答案选G“他们发现笑确实可以促进人体健康”。　　答案：G　　3．解析：根据上文．..whiledoctorscheckedtheirhearts，bloodpressure，breathingandmuscles.可知答案选D“笑使血压升高，心跳和呼吸加快，它还使面部、肚子，甚至双脚的肌肉得到运动”。　　答案：D

8、　　4．解析：根据上文Thegroupthattolerated(忍耐)thepain...可知答案选C“笑可以缓解疼痛的原因似乎是它帮助大脑产生一种化学物质，这种物质减弱了压力和疼痛”。　　答案：C　　5．解析：根据下文出现的theirpatients可知答案选B“由于这些发现，目前一些美国医生开办了笑诊所，在诊所里，他们鼓励病人通过笑来改善病情”。　　答案：B