国际交流英语视听说B4U6

国际交流英语视听说国际交流英语视听说Unit6HealthandFitnessBook4AnalyticalListeningListening1seminarn.专题研讨会pesticiden.杀虫剂flame-retardantn.阻燃剂a.阻燃的leadn.铅chipv.掉碎片flakev.成片（剥落）swordfishn.剑鱼mercuryn.汞，水银pollutantn.污染物persistv.继续存在powerplantn.发电厂inmoderation（饮酒或吸烟等）有节制地，适度地textv.发短信radiationn.辐射物；放射物headsetn.（带有麦克风的）耳机AnalyticalListeningAnnouncer:Everyone,IjustwanttothankDr.WallaceagainforbeingthefirstguestspeakerinourHealthlineseries.Wehopethatthisisthefirstofmanyseminarsabouthealthylivingintoday’sworld.Dr.Wallace:Itwasmypleasuretobehere.Announcer:So,nowyou’veheardwhatDr.Wallacehastosayaboutpesticidesandhowtheyrelatetoourhealthandtheenvironment.Let’sopenthefloorupforquestions.Wewouldappreciatehearingfromyou.Ithinkwehaveourfirstquestion.Goahead,sir.MaleSpeaker1:OK.Here’smyquestion.Dr.Wallace,Iheardthatflame-retardantsarenowturningupinthehumanbody.Isthistrue,andifso,howdangerousarethosechemicals?TobecontinuedListening1AnalyticalListeningDr.Wallace:Allright.Well,flame-retardants—whicharechemicalsthatmakeproductsdifficulttoburn—areaddedtojustaboutanyproductthatcanburn,andtheysavehundredsoflivesayearintheUnitedStatesalone.Unfortunately,onefamilyofflame-retardantcompoundscalledPBDEshavebeenshowingupinthebloodofhumans,butlittleisknownabouttheirimpactonourhealth.Inhighamounts,theyhavecausedhealthproblemsinlaboratoryanimals.However,itlooksasthoughthesmallamountsofPBDEsthatnormallyaccumulateinthehumanbodyaren’tworthworryingabout.Announcer:Thankyou,Doctor.Wehaveanotherquestion.Thewomaninthethirdrow.Goahead.TobecontinuedListening1AnalyticalListeningFemaleSpeaker1:Hi,Dr.Wallace.I’mamotheroftwoyoungchildren,andIrecentlymovedintoanewapartment.Ijustfoundoutthatthewallsarepaintedwithleadpaint.WhatshouldIdo?Dr.Wallace:Well,it’sknownthatevenverysmallamountsofleadcancausebraindamageinchildren.Ifthepaintischippingorflaking,callyourlandlord.It’shisorherresponsibilitytofixtheproblem.Anothergoodoptionistomove,butifyoucan’t,atleastmakesurethatyourchildrenaren’texposedtopaintchipsordust.Announcer:Thatsoundslikegoodadvice.Let’stakeanotherquestion.OK,goahead.TobecontinuedListening1AnalyticalListeningMaleSpeaker2:Hello,Doctor.Ieatalotofseafood—especiallyswordfishandtuna.Isthereanydangertomefrommercuryinthosefish?Dr.Wallace:Mercuryisaverydangerouspollutantwhichpersistsforalongtimeintheenvironment.Itneedstobetakenseriouslybecausemercurypoisoningcanpermanentlydamagememoryandourabilitytolearn.Coal-burningpowerplantsareamajorsourceofmercury.Itgetsintothewaterandintothebodiesofthesmallestanimalsfirst.Thesesmallanimalsareeatenbylargerones,whicharetheneatenbyevenlargerones,andsoonupthefoodchain.TobecontinuedListening1AnalyticalListeningDr.Wallace:Largefishatthetopofthefoodchain,suchastunaandswordfish,accumulatehighamountsofmercury—andpassitontopeoplewhoeatseafood.Now,itdoesn’tappearthattracesofmercuryinthebloodareaseriousproblem,butIcouldbewrong.Eatingtoomuchofthosefishcouldraisetheamountofmercuryinyourbodytoadangerouslevel,soIwouldadviseyoutoeattheminmoderation—meaningareasonableamount.Announcer:Well,itlookslikewehavetimeforonemorequestion.Theladyintheredshirt.Goahead.FemaleSpeaker2:Helloandthanksfortakingmyquestion.WhatI’mconcernedaboutismyconstantcell-phoneuse.Couldithaveanegativeimpactonmyhealth?TobecontinuedListening1AnalyticalListeningDr.Wallace:That’saninterestingquestionandoneI’msuremanyareconcernedabout.Onecommonconcernisthedangerofdrivingandusingacellphoneatthesametime.Cellphonestakeourattentionofftheroad,andthatcanleadtoaccidents.Thesolutiontothatproblemissimple:turnoffyourcellphonewhiledriving,anddon’tevertextmessagewhiledriving.Anotherconcernhastodowithradiation.Forthoseofyouwhoaren’tfamiliarwiththis—radiationisenergythatcertainmachinesandsomesubstancesproduce.Largeamountsofradiationcanbedangerous.Cellphonessendinformationusingradiation,sonaturallywe’reexposedtothatradiationwhenweuseourphone.TobecontinuedListening1AnalyticalListeningDr.Wallace:Cell-phoneradiationhascausedbraincancerinrats,butitsdangertohumansisdifficulttoassess.Somestudieshaveindicatedthatcellphonesaresafe,butsomeotherstudiesseemtolinkcell-phoneradiationwithbraincancerinhumans,especiallyinpeoplewhohavebeenusingcellphonesforadecadeorlonger.I’mnotaltogethersurethatyoucaneliminateradiationexposurefromcellphones,butpeoplewhoareconcernedaboutitcanreducetheriskbyusingaheadset.Thiskeepsthephoneawayfromyourheadandexposesyoutolessradiation.Announcer:I’mafraidthat’sallthetimewehave.Thanksverymuch,Dr.Wallace,fortheinformationandadvice.We’llseeyouallatnextmonth’sseminaraboutorganicfoods.Listening1AnalyticalListeningListening2bouldern.大圆石boulderingn.抱石（新兴的攀岩运动之一，与传统攀爬形式不同，其高度往往只在四至六米之间，无须携带复杂的保护装备）freesoloclimbingn.无保护攀岩thrilln.引起激动的事物AnalyticalListeningJennifer:Hi,Stan.Howareyou?Howwasyourday?Stan:Hi,Jennifer.Itwasgreat.IspenttodayatYosemiteNationalPark.Iwasrockclimbing.Jennifer:Thatmusthavebeenfun.Howlonghaveyoubeenrockclimbing?Stan:Well,Istarteddoingitforexerciseafewyearsago.Ahalfhourofrockclimbingisequivalenttoaboutanhourofjogging,andIwasclimbingforthreehourstoday.Jennifer:You