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英语四级听力练习题.docx

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英语四级听力练习题2017英语四级听力练习题除了课堂上的学习外,平时的积累与练习也是学生提高成绩的重要途径,下面是CN人才网为大家整理的2017英语四级听力练习题，欢迎参考~2017英语四级听力练习题PassagesPassageOneThemassivedeclineinsleephappenedsoslowlyandquietlythatfewseemedtonoticethetrend.WasitbecauseofthegrowingattractionoftheInternet,videogamesandendlessTVchannels?Neverdisconnectingfromwork?Nomatterhowithappened,millionsofAmericansareputtingtheirhealth,qualityoflifeandevenlengthoflifeindanger.Newevidenceshowswhygettingenoughsleepisatoppriority.Some40%ofAmericansgetlessthan7hoursofshut-eyeonweeknights."Thelinkbetweensleepandhealth,andbadsleepanddiseaseisbecomingclearerandclearer."saysLawrenceAlberstaine,asleepexpertatHarvardUniversity.Forexample,sleepdurationhasdeclinedfromsome8hoursinthe1950sto7inrecentyears.Atthesametime,highbloodpressurehasbecomeanincreasingproblem.Bloodpressureandheartratearetypicallyattheirlowestlevelsduringsleep.Peoplewhosleeplesstendtohavehigherbloodpressure,heartattack,diabetes,weightgainandotherproblems.Sleepingbettermayhelpfightoffillness."Whenpeoplearesleep-derived,therearehigherlevelsofstresshormonesintheirbodieswhichcandecreaseimmunefunction."saysDoctorFelice,ofNorthwesternUniversityinChicago.AuniversityofChicagostudyshowspeoplewhosleepwelllivelonger.Sosaygoodnightsooneranditmayhelpyoustayactiveandvitaltoaripeoldage.Q16.Whatisthespeakermainlytalkingabout?Q17.Whatdowelearnfromthetalkabouttoday'sAmericans?Q18.Whatdoesthespeakersaywillhappentopeoplewholacksleep?PassageTwoParentsandteacherswilltellyounottoworrywhenapplyingforaplaceatauniversity.Butinthesamebreathwillremindyouthatitisthemostimportantdecisionofyourlife.Thefirstdecisionisyourchoiceofcourse.Itwilldependonwhatyouwanttogetoutofuniversity,whatyouaregoodatandwhatyouenjoy.Thenextdecisioniswheretoapply.Aimhighbutwithinreason.Doyouhavetherightcombinationofsubjectsandareyourexpectedgradeslikelytomeetentryrequirements?ThedeadlineisJanuary15th.Butitisbesttosubmityourapplicationearlybecauseuniversitiesbeginworkassoonasformsstartrollingin.Themostimportant