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1、Unit17Laughter【文章导语】Laughtercanmakepeoplehappy.Itisalsosaidthatlaughingcanmakepeoplehealthy.Isittrue?ThereisanEnglishsaying:“Laughteristhebestmedicine.”Untilrecently,fewpeopletookthesayingseriously.Now,however,doctorshavebeguntolookintolaughterandtheeffectsithasonthehumanbody.Theyhav
2、efoundthatlaughterreallycanimprovepeople’shealth.Testswerecarriedouttostudytheeffectsoflaughteronthebody.Whenpeoplewatchedfunnyfilms,doctorscheckedtheirheartrate,bloodpressure,breathingandmuscles.Itwasfoundthatlaughterhassimilareffectstophysicalexercises.Itincreasesbloodpressure,theh
3、eartbeatingandbreathing;italsoworksseveralgroupsofmusclesintheface,thestomach,andeventhefeet.Iflaughterexercisesthebody,itmustbebeneficial.Othertestshaveshownthatlaughterappearstobeabletoreducetheeffectofpainonthebody.Inoneexperimentdoctorsproducedpainingroupsofstudentswholistenedtod
4、ifferentradioprogrammes.Thegroupthattoleratedthepainforthelongesttimewasthegroupwhichlistenedtoafunnyprogramme.1Thereasonwhylaughtercanreducepainseemstobethatithelpstoproduceakindofchemicalsinthebrainwhichdiminishbothstressandpain.2Asaresultofthesediscoveries,somedoctorsintheUnitedSt
5、atesnowholdlaughterclinics,inwhichtheyhelptoimprovetheirpatients’conditionbyencouragingthemtolaugh.Theyhavefoundthateveniftheirpatientsdonotreallyfeellikelaughing,makingthemsmileisenoughtoproducebeneficialeffectssimilartothosecausedbylaughter.译文有一句英语谚语说:“笑是最好的药物。”直到现在,很少有人把这句话当回事。然而,
6、最近医生已经开始研究笑以及它对人体带来的影响。他们发现笑真的能改善人的健康。已经有实验来验证笑对人体的影响。当人们观看滑稽的电影时,医生测量他们的心率,血压,呼吸和肌肉。结果发现笑具有和运动相似的效果。它能改善血压,心跳和呼吸;而且它还能锻炼好几组面部肌肉,胃部甚至是脚部的肌肉。如果笑能让身体得到锻炼,它一定会是有益的。其他的测试也表明笑似乎能减少疼痛对身体的影响。在一个实验中,医生让几组学生听不同的电台节目并造成痛感。忍受疼痛时间最长的小组听的是幽默节目。笑声能减轻疼痛的原因似乎是它能帮助大脑产生一种既能减少压力又能减少疼痛的化学物质。基于这些发现,现在美国的
7、一些医生开办大笑诊所,通过鼓励病人大笑来帮助改善他们的状况。他们发现即使病人不想大笑,让他们微笑就足以产生与大笑相似的效果。典句欣赏1.Thereasonwhylaughtercanreducepainseemstobethatithelpstoproduceakindofchemicalsinthebrainwhichdiminishbothstressandpain.笑声能减轻疼痛的原因似乎是它能帮助大脑产生一种既能减少压力又能减少疼痛的化学物质。2.Asaresultofthesediscoveries,somedoctorsintheUnitedStat
8、esnowholdlau
