大學(xué)英語六級改革適用(聽力)模擬試卷300(題后含答案及解析)

大學(xué)英語六級改革適用（聽力）模擬試卷300(題后含答案及解析)題型有：1.What’sthemainpurposeoftheman’svisit?2.Whatcanwelearnabouttherelationshipbetweenthetwospeakers?3.What’sthewoman’sprincipleinforeigntradebasedon?4.Whatnewpracticehasbeenadoptedbythewoman’scompany?1．A．TotourthemostfamoussightsofinterestinChina.B．ToinvestigatethecomputermarketinChina.C．Tonegotiateacontractaswellasfurthercooperation.D．Topromoteintergovernmentalrelationship.正確答案：C解析：寒暄之后女士切入正題：問男士想如何進(jìn)行磋商，男士回答時(shí)提及目前的合同即將到期，討論新的合同，綜合關(guān)鍵詞得出的答案是C。知識模塊：聽力2．A．Theyhavebeencooperatingforacoupleofyears.B．Theyareabouttosignthefirstcontractbetweenthem.C．Theyhavebeenlong-termbusinesspartners.D．Theyarestartingtogetacquaintedwitheachother.正確答案：A解析：選項(xiàng)為他們之間的關(guān)系，根據(jù)前一題中提到過的男士所說“目前的合同即將到期”及后文明示的“過去幾年合作很好”，得出答案為A。B錯(cuò)在first，C錯(cuò)在long-term(這是此行目的之一，不是現(xiàn)實(shí))。知識模塊：聽力3．A．Cooperationandconcession.B．Equalityandmutualbenefit.C．Exchangingdailynecessities.D．Introducingadvancedtechnology.正確答案：B解析：答案是直接聽到的原詞。C中的dailynecessities是對原文neededgoods的誤解。知識模塊：聽力4．A．It’ssettingupjointventures.B．It’sbranchingoutintopolitics.C．Itcomputerizesmanagement.D．Itacceptsinstallmentpayment.正確答案：D解析：選項(xiàng)為某公司的做法。D中的acceptsinstallmentpayment是原文adoptpaymentbyinstallments的同義表達(dá)。知識模塊：聽力聽力原文：W:WelcometothiseditionofTalkoftheNationWe’retalkingthishourabouthowandwhypeoplemightbecomeaddictedtothingsotherthandrugs.Dr.JamesatMarylandUniversityhasputtogetherasupportgroupforstudentswhofindthemselvesaddictedtotheInternet.Hejoinsmenow.M:Thankyouverymuchforinvitingme.W:IsInternetaddictionarelativelynewthing?M:Well,somepeoplehavebeeninvolvedwiththeInternetforyearsandmayhavebeenaddictedforawhile.It’scertainlygrowingoncollegecampuses.W:Howdoesitpresentitself?M:Well,someofthemhaveissueslikerelationshipproblems,or[6]problemsmaintainingtheirgradesbecausetheyarespendingsomuchtimeontheNet.W:ImyselfhaveastrongurgetogosurfingontheNetwheneverIhavetime.HowdoIknowwhenmyimpulsetogoonlinewillturnmeintoanInternetaddict?M:Uh...I’mnotsuretheexactamountoftimeisreallytheissue,butIthinkarealimportantthingistoexaminewhat’sgoingonwithyouwhenyouarenotontheNet.Ifyouarebeginningtofeelanxiousordepressedoremptyorlonelyandyoureallylookforwardtothosetimeswhenyoucanbeonlinetobeconnectedwithotherpeopleinthatway,then,Ithink,aseriousissueisstartingtohappen.W:Whatifyoustartgivingupotherthings,likegoingoutforawalk...isthatasymptom?M:Well,peopleneedtohavesomesortofbalanceinlife.Ifyoucan,spendsometimeontheInternetandthentakeawalkatadifferenttimeoftheday.Infact,oneofthethingswesuggestinthegroupistosomehowbreakthepattern.Gooutandtakeawalk,andthencomebackbeforeyougetbackonline.W:Sothat’showwecanavoidInternetaddiction.Thankyouverymuch,Dr.James.5.WhatalarmingphenomenonisDr.Jamesreferringto?6.Whydosomestudentshaveproblemsmaintainingtheirgrades?7.WhatdoesDr.Jamesregardasareallyseriousissue?8.WhatdoesDr.Jamessuggestattheendoftheconversation?5．A．Growingindifferenceofcollegestudentstootherpeople.B．Ever-increasingInternetaddictiononcollegecampuses.C．Sharpdroppinginageofdrugabusers.D．Degradingqualityofcollegeeducation.正確答案：B解析：選項(xiàng)為某種不良現(xiàn)象，第一、二輪的對話中兩次提到同一現(xiàn)象：addictedtotheInternet、Internetaddiction，說明這應(yīng)該是Dr．James與主持人的談話主題，故答案為B。知識模塊：聽力6．A．Theyhavebadrelationshipwithothers.B．Theygooutforawalktoofrequently.C．TheyareaddictedtotheInternet.D．Theystudyhardbutstillfail.正確答案：C解析：選項(xiàng)內(nèi)容均為負(fù)面信息，含否定意義，可推測題目與存在什么問題或缺點(diǎn)有關(guān)。男士說有些學(xué)生人際關(guān)系有問題，或者成績不穩(wěn)，因?yàn)樗麄兓ㄌ鄷r(shí)間上網(wǎng)了，題目問的是成績不穩(wěn)這種情況的原因，C是對男士講的spendingsomuchtimeontheNet的同義表達(dá)，故為答案。知識模塊：聽力7．A．Ifonegetsanxiousordepressedwhennotonline.B．Ifastudentisisolatedbyhispeers.C．Ifonefindsithardtoconcentrateinhiswork.D．IfonehasanurgetosurftheNetwheneverhecan.正確答案：A解析：選項(xiàng)為某種假設(shè)的情形，對話中恰恰也有個(gè)if從句，其中的重要信息詞anxious、depressed及句意與A完全一致。因此即使不聽問題也應(yīng)該可以判斷出答案為A。知識模塊：聽力8．A．Spendmoretimeoutdoors.B．Dovariousactivities.C．Changeone’sdailyroutine.D．Goonahealthydiet.正確答案：C解析：選項(xiàng)為動(dòng)詞原形，往往是問打算、建議、要求。最后一輪對話中男士使用了幾個(gè)祈使句，并明確提出了建議，聽到wesuggest，應(yīng)該特別注意其所用動(dòng)詞：breakthepattern，故C為答案。知識模塊：聽力SectionB聽力原文：TheGoldenGateBridgejoinsthebeautifulcityofSanFranciscowiththesuburbstothenorth.Eachdayabout100,000automobilescrossthebridgetakingpeopletoandfromthecity.Morethanhalfofthemcrossthebridgeduringthemorningandeveningrushhours.Withtrafficsoheavy,thetripisnotpleasant.Now,however,thereisatleastonegroupofhappycommuters.Thesearethepeoplewhotravelunderthebridgeinsteadofonit.Theygotoworkbyboatandenjoyitsomuchthatmostofthemsaytheywillnevergobycaragain.Theferrytheytakeisspacious,quietandcomfortable.Commuterscanenjoythesunondeck.Inthemorningtheycanhavebreakfastinthecoffeeshop.Andintheeveningtheycanorderadrinkinthebarwhilelookingatthebeautifulscenery.Thetriptakesonly30minutesandisnotverycostly.Butbestofall,beingonaboatseemstomakepeoplefeelmorefriendlytowardeachother.Therehasalreadybeenamarriageoftwocommuterswhometontheferry.Becausetheferryhasbeensosuccessful,thereareplanstouseotherstilllargerboats.Thereisalsoaproposalforahighspeedboatthatwillmakethetripinonly15minutes.Butnoteveryoneishappyaboutthat.Alotofpeoplefeelthathalfanhourisjustenoughtimetorelax.9.Accordingtothespeaker,howdocommutersfeelaboutcrossingtheGoldenGateBridgebycar?10.Whatdoesthespeakersayaboutferrycommuters?11.Howdocommutersrespondtoplansforthefutureoftheferry?9．A．Theyaredelightedbecausetheycanenjoythescenerywhiledriving.B．Theyarefrightenedbecausetrafficaccidentsarefrequent.C．Theyareirritatedbecausethebridgeisjammedwithcars.D．Theyarepleasedbecauseitsavesthemmuchtime.正確答案：C解析：根據(jù)“Withtrafficsoheavy，thetripisnotpleasant．”可以得出橋上的交通太擁擠了，司機(jī)感到很惱怒，所以答案為C。知識模塊：聽力10．A．Theydon’thavetheirowncarstodrivetowork.B．Manyofthemareromanticbytemperament.C．Mostofthemenjoythedrinksontheboat.D．Theytendtobemorefriendlytoeachother.正確答案：D解析：短文提到，乘船似乎使人與人之間感到更友善。由此可以判斷答案為D。知識模塊：聽力11．A．Manywelcometheideaofhavingmorebarsonboard.B．Manyprefertheferrytomaintainitspresentspeed.C．Somesuggestimprovingthedesignofthedeck.D．Someobjecttousinglargerluxuryboats.正確答案：B解析：“Butnoteveryoneishappyaboutthat．Alotofpeoplefeelthathalfanhourisjustenoughtimetorelax．”中的第一個(gè)that指的是把船所用時(shí)間縮短，而不是所有人都對此感到高興，他們更希望船保持現(xiàn)有的速度。所以答案為B。知識模塊：聽力聽力原文：TheworldwideorganizationoftheRedCrossstemsfromtheideaofHenriDunant,aSwissbanker.In1838,attheageoften,Dunantwastakenbyhisfathertovisitaprison.Therehesawprisonerschainedtogetherexercisingintheyardandbreakingstonesalongtheroad.Thisexperienceleftadeepimpressiononhimandmadehimdeterminedtodosomethingforconvictsandslavesandforallwhowereoppressedanddeprivedoftheirliberty.On24thJune1859whileonhiswayfromGenevatoFrance,DunantwitnessedthebattlebetweentheFrenchandAustrianarmies.Itwasoneofthefiercestbattlesofthe19thcentury.Shockedbythelackofmedicalsuppliesandattentiongiventothewounded,Dunantdecidedthatvolunteerservicehadtobeorganized.Hegatheredtogetheranumberofwomenwhoattendedthehundredsofwoundedsoldiersofallnationalitiesandhelpedthesurgeonsasbestastheycould.Fromthatbattle,Dunantdeterminedtoformabodyofpeoplewhowouldrallytogetherintimesofwarandattendtotheneedsofthewoundedanddying.Dunantheldthatasufferinghumanbeingshouldbehelpedforhisownsakeonlywithoutregardtorace,religion,orpoliticalbeliefs.ManyEuropeanstatessupportedhimandon22ndAugust1864,thefirstGenevaConventionwassigned.Thislaysdownthatonceasoldieriswounded,heandeveryonewhocomestohishelpceasetobeanenemy.Asymbolbywhichthereliefworkerscouldberecognizedwasdevised.AsatributetoSwitzerland,thesymbolwastheSwissflagreversed.Thatisaredcrossonawhiteground.SotheRedCrosswasborn.12.WhatfirstledHenriDunanttothinkofhelpingtheoppressed?13.WhatdidHenriDunantdoduringthebattlebetweentheFrenchandAustrianarmies?14.WhatwasHenriDunant’sbeliefwhenhefoundedtheRedCross?15.WhywasthesymboloftheRedCrossdesignedwitharedcrossonwhiteground?12．A．Avisittoaprison.B．Theinfluenceofhisfather.C．Atalkwithsomemiserableslaves.D．HisexperienceinthewarbetweenFranceandAustria.正確答案：A解析：根據(jù)tovisitaprison和Thisexperienceleftadeepimpressiononhimandmadehimdeterminedtodosomething，可以得知HenriDunant最初有這種想法是在他和父親去過監(jiān)獄之后。所以答案為A.知識模塊：聽力13．A．Hesentsurgeonstoserveinthearmy.B．Heprovidedsoldierswithmedicalsupplies.C．Herecruitedvolunteerstocareforthewounded.D．Hehelpedtofleetheprisonersofwar.正確答案：C解析：根據(jù)錄音提到的“Dunantdecidedthatvolunteerservicehadtobeorganized．Hegathered…”，可以得知在法奧戰(zhàn)爭中他組織志愿服務(wù)隊(duì)照顧傷員。所以答案為C。知識模塊：聽力14．A．Allmenarecreatedequal.B．Thewoundedanddyingshouldbetreatedforfree.C．Awoundedsoldiershouldsurrenderbeforehereceivesanymedicaltreatment.D．Asufferingpersonisentitledtohelpregardlessofrace,religionorpoliticalbeliefs.正確答案：D解析：根據(jù)“…shouldbehelpedforhisownsakeonlywithoutregardtorace，religion，orpoliticalbeliefs”可知HenriDunant的理念是不管他的種族、宗教或是政治信仰是什么，都有權(quán)得到幫助。故選D。知識模塊：聽力15．A．TohonorSwissheroeswhodiedinthewar.B．ToshowSwitzerlandwasneutral.C．TopaytributetoSwitzerland.D．ToshowgratitudetotheSwissgovernmentforitsfinancialsupport.正確答案：C解析：根據(jù)“AsatributetoSwitzerland，thesymbolwastheSwissflagreversed”，可知紅十字標(biāo)志的設(shè)計(jì)是為了對瑞士表示敬意。故選C。知識模塊：聽力SectionC聽力原文：TodayIwilltalkaboutnursinghomeneglect.Theproblemcanoccuranywhereandcantakemanyshapes.Whatmakesthisparticularlydangerousisthatitcanbeoverlookedorignoredforsolong.Evenuponrepeatedvisitstoanursinghome,thesignsofnursinghomeneglectcanremainhid-den.Inordertounderstandthescopeoftheproblem,itisimportanttoknowthedifferenttypesofnursinghomeneglect.First,personalcleanlinessneglect.[16]Forsomeelderlynursinghomeresidents,standardsofpersonalcleanlinessaredifficulttomaintainwithoutassistancefromstaff.Withoutexternalhelp,residentsarelefttoshiftforthemselvesforacleanchangeofclothesorevensuchbasicsasoralcleanliness.Victimsofnursinghomeneglectmaynotreceivethehelptheyneedwithbathingandgeneralcleanliness.Second,basicneedsneglect.Thoughfamiliesoftendecidenursinghomesarethebestplacefortheirelderlylovedonestoreceivecare,nursinghomeneglectmaytaketheformofafailuretoprovidebasicneeds.Foodandwaterarethebuildingblocksoflife,butacommonproblemforvictimsofnursinghomeneglectisthirstandmalnutrition.Third,medicalneglect.Aswithbasicneeds,mostfamiliesassumethatanursinghomewillprovidethenecessarymedicalcarefortheirlovedones.Thisisnotalwaysthecase.[17]Pressuresores,orbedsores,areamajorprobleminnursinghomesandresultfromremaininginaseatedorlyingpositionforagreatlengthoftime:theymustbedealtwithinatimelymannertopreservepatienthealth.Untreatedcuts,too,mustbedealtwithquicklytopreventsystemicinfectioninelderly,immune-compromisedpatients.Additionally,manyelderlypeopleneedmedicinetosurvive.Incountlesscasesnursinghomesfailtotreatentirely.Fourth,emotionalneglect.Oneofthemostdifficulttypesofnursinghomeneglecttoidentifydoesnotmanifestitselfinobviousphysicalsigns.Emotionalneglectcanbeasharmfulasanyphysicalneglectbutcanbemuchmoresubtleinitsmanifestation.Overburdenedstaffcanoftenletthestressoftheireverydaytaskspreventfriendlyinteractionwithresidents.Elderlypeoplearesusceptibletodepressionandmayretreattotheirrooms,withdrawfromsocialactivities,andbeinneedofemotionalsupportandconnection.16.Whyisithardfortheelderlyresidentstomaintainpersonalcleanlinessinnursinghomes?17.Whatcausespressuresoresoftheelderlyresidentsinnursinghomes?18.Whatdowelearnaboutemotionalneglect?16．A．Theyarejusttoolazy.B．Theydon’tgetexternalhelp.C．Therearetoomanyresidents.D．Theydon’tcareaboutit.正確答案：B解析：錄音提到養(yǎng)老院的一些老人由于無法獲得工作人員的幫助(withoutassistancefromstaff)，個(gè)人衛(wèi)生很難保持，故選B項(xiàng)。A項(xiàng)“他們太懶”、C項(xiàng)“養(yǎng)老院住的老人太多”和D項(xiàng)“他們不在意個(gè)人衛(wèi)生”均未提及。知識模塊：聽力17．A．Theysitorlieforalongtime.B．Theysufferfrommalnutrition.C．Theirimmunesystemisdeclining.D．Theydon’ttakeenoughmedicine.正確答案：A解析：錄音提到養(yǎng)老院老人的褥瘡(pressuresores／bedsores)是他們長期保持坐或者躺的姿勢造成的(seatedorlyingpositionforagreatlengthoftime)，因此選A項(xiàng)。B項(xiàng)中的malnutrition有在錄音中提到，錄音是講老人基本生活需要被忽視時(shí)，會(huì)有缺水和營養(yǎng)不良等問題，但與本題無關(guān)。錄音提到老人未處理的傷口必須盡快進(jìn)行處理，因?yàn)槔先嗣庖吡ο陆?immune-compromised)，容易引起全身感染，但免疫力下降并不是造成褥瘡的原因，排除C項(xiàng)。錄音還提到許多老人需要藥物來維持生命，但是養(yǎng)老院的工作人員經(jīng)常都沒有給予老人足夠的藥物或其他治療，D項(xiàng)“他們沒有服用足夠的藥”符合事實(shí)，但也不是造成褥瘡的原因，排除D項(xiàng)。知識模塊：聽力18．A．ItisthemostserioustypeofneglectB．Itiseasiertoidentifythanphysicalneglect.C．Itcanbeasdamagingasphysicalneglect.D．Itresultsfrominfrequentvisitsfromfamily.正確答案：C解析：錄音提到對老人情感上的忽視可以和任何一種身體上的忽視一樣后果嚴(yán)重(canbeasharmfulasanyphysicalneglect)，因此本題選C項(xiàng)。錄音提到對養(yǎng)老院老人的情感忽視是其中一種最難被發(fā)現(xiàn)的忽視。但并未表示“情感上的忽視是最嚴(yán)重的一種忽視”，因此A項(xiàng)不正確。錄音提到情感上的忽視比身體上的忽視表現(xiàn)得更為微妙(subtle)，因此B項(xiàng)“情感上的忽視比身體上的忽視更容易被發(fā)現(xiàn)”不正確。錄音只提到負(fù)擔(dān)過重的養(yǎng)老院工作人員因?yàn)槿粘Ｊ聞?wù)過多，跟老人進(jìn)行的交流不夠，并未提到對老人情感上的忽視是由于其家人過少的探望造成的，因此D項(xiàng)不正確。知識模塊：聽力聽力原文：Amobileofficeis,quiteliterally,anofficewhichiscapableofmobility.Thismeansthatwhereverinthecountrythatofficeisneeded,itcanberelocatedto.Mobileofficesarecommonlyusedbysalespeoplewhohavetoworkoutoftheirnormalcompanyoffices.Assalespeopleoftentravelthelengthandbreadthofthecountrylookingforpeoplewhoareinterestedinwhattheyareselling,theyoftenneedsomeplacetosetupatemporaryofficeastheymayspendalongperiodoftimeinoneplace.Itistheneasyforsalespeopleorpeoplewithasimilaroccupationwhoareworkingawayfromtheirmainofficestoconnectwiththeircompanyviatheportablecomputers,suchaslaptopsandmobilephones.Itisforthisreasonalsothatamobileofficeisideal—theofficecanbetransportedfromonelocationtoanotherwithrelativeease.Thestaffwhoarecurrentlyemployedwithinthetemporaryofficethendonothavetoputinmuchefforttomakingthetemporaryofficefunctionalandefficientforthejobthattheyneedtodoandworkcanoftenbestartedalmostimmediately.Therearemanyadvantagestorentingamobileoffice.Forexample,thisofficeisalotcheaperthanrentingahallorabuildingfortemporaryofficework.Ifoneweretorentanalreadystandingbuilding,suchthingsasheatingandflowingwatermayhavetobepaidforontopoftherent.Withamobileoffice,onedoesnothavetopayforheatingbutmayinsteaduseaportableheaterthatrunsoffmainselectricity.Mobileofficescanbeconnectedtomainselectricityorcanbeconnectedtoageneratorwhichprovideselectricitytotheportableoffice.Thisallowspeopleworkingwithinamobileofficetousedevicessuchaslaptops,printersandphotocopiersandakettlefreely.Aportableofficeisnotasbasicassomemaybelieve—itmaybedescribedasacontinuationofamainoffice.Aportableofficemayalsobespecificallydesignedtomeetanofficeneed.Ahiredbuildingmaynothaveeverythingneededtoconvertitintoafullyfunctioningandeffectiveofficeenvironment.Afteramobileofficehasbeenconvertedintoafunctioningoffice,itcanbefreelymovedaroundthecountrytosuittheneedsofwhoeverisusingit.Therearemanycompaniesthesedaysthatspecialiseinmobileoffices,sofindingonetoprovideamobileofficeisnotdifficult.Manycompaniescanprovideamobileofficetailoredtothetypeofworkthatneedstobedone.19.Whydosalespeopleneedamobileoffice?20.Whatistheadvantageofmobileoffices?21.Whatdowelearnaboutmobileoffices?19．A．Becausetheyneedtolookforcustomerseverywhere.B．Becausetheydon’twanttoworkinanormaloffice.C．Becausetheycan’taffordtorentanormaloffice.D．Becausetheythinkmobileofficesarebetterequipped.正確答案：A解析：錄音提到銷售員經(jīng)常會(huì)到全國各地去尋找可能對他們的產(chǎn)品有興趣的顧客(travel…lookingforpeople)，因此他們需要一個(gè)臨時(shí)的辦公場所，本題選A項(xiàng)。B項(xiàng)“他們不想在固定的辦公室工作”、C項(xiàng)“他們無法支付固定辦公室的租金”和D項(xiàng)“他們認(rèn)為移動(dòng)辦公場所設(shè)備更齊全”都沒有在錄音中提到。知識模塊：聽力20．A．Aheaterisnotneededatall.B．Devicescanbeusedforfree.C．Itisasbasicaspossible.D．Itcanbefreelymoved.正確答案：D解析：錄音提到移動(dòng)辦公室的幾個(gè)優(yōu)點(diǎn)，其中說到一旦被改造成功能齊全的辦公室，就可以自由地移動(dòng)到各個(gè)地方(freelymovedaround)以滿足人們的需要，因此選D項(xiàng)。錄音提到在移動(dòng)辦公室，人們可以使用可攜帶的取暖器，不需要管道供暖，也不需要支付暖氣費(fèi)，因此A項(xiàng)“不需要使用取暖器”不正確。錄音提到移動(dòng)辦公室可以連接到電源，所以人們可以自由地使用電子設(shè)備，如電腦、打印機(jī)、復(fù)印機(jī)、燒水壺等，B項(xiàng)“人們可以免費(fèi)使用設(shè)備”與錄音原文不符。錄音提到移動(dòng)辦公室并不像一些人想象的那樣設(shè)備簡單，它是主辦公室的一種延續(xù)，因此C項(xiàng)“它盡可能設(shè)備簡單”不正確。知識模塊：聽力21．A．Fewcompaniesspecialiseinmobileoffices.B．Mobileofficesarestillnotcommonlyused.C．Mostofthemobileofficesarestandardized.D．Mobileofficescanbetailoredtovariousneeds.正確答案：D解析：錄音提到很多公司可以提供訂制的移動(dòng)辦公室，用于滿足不同類型的工作需要(tailoredtothetypeofwork)，因此選D項(xiàng)。錄音提到當(dāng)前有許多公司專門從事移動(dòng)辦公室業(yè)務(wù)，要找到一家這樣的公司并不難，A項(xiàng)“很少有公司專營移動(dòng)辦公室”與錄音相反。B項(xiàng)“移動(dòng)辦公室還未普及”和C項(xiàng)“大部分移動(dòng)辦公室是標(biāo)準(zhǔn)化的”均未在錄音中提及。知識模塊：聽力聽力原文：Goodmorning.TodayI’dliketotalkaboutelectroniccigarettes.[22]Electroniccigarettesarebattery-operateddevicesdesignedtodelivernicotinewithflavoringsandotherchemicalstousersinvaporinsteadofsmoke.Theycanbemanufacturedtoresembletraditionaltobaccocigarettes,cigarsorpipes,oreveneverydayitemslikepensorUSBmemorysticks:newerdevices,suchasthosewithfillabletanks,maylookdifferent.Morethan250differente-cigarettebrandsarecurrentlyonthemarket.Whilee-cigarettesareoftenpromotedassaferalternativestotraditionalcigarettes,whichdelivernicotinebyburningtobacco,littleisactuallyknownyetaboutthehealthrisksofusingthesedevices.Cigarettesmokingremainstheleadingpreventablecauseofsicknessandmortality,responsibleforover400,000deathsintheUnitedStateseachyear.E-cigarettesaredesignedtosimulatetheactoftobaccosmokingbyproducingsomethingthatlooksandfeelsliketobaccosmokeanddeliversnicotinebutwithlessofthetoxicchemicalsproducedbyburningtobaccoleaves.[24]Becausetheydelivernicotinewithoutburningtobacco,e-cigarettesappearasiftheymaybeasafer,lesstoxicalternativetoconventionalcigarettes.Althoughtheydonotproducetobaccosmoke,e-cigarettesstillcontainnicotineandotherpotentiallyharmfulchemicals.Nicotineisahighlyaddictivedrug,andrecentresearchsuggestsnicotineexposuremayalsoprimethebraintobecomeaddictedtoothersubstances.Also,testingofsomee-cigarettepro