Unit5FirstaidⅠ.阅读理解A体裁：说明文话题：医学词数：271时间：6′Ascoldseasonapproaches，manyAmericanswillbuyalotofvitaminCandechinacea(紫锥菊)inordertoavoidcatchingacold.Butpayingattentiontoanoldpieceofadviceabouthavingenoughsleepeverydaymightbemoreimportant.Researchsuggeststhatpoorsleepcanincreasethechancetocolds.Studieshaveshownthatpoorsleepandachancetocatchacoldgohandinhand，andscientiststhinksleepplaysanimportantroleinthebody'sdefenses.InarecentstudyforTheArchivesofInternalMedicine，scientistsfollowed153menandwomenfortwoweeks，keepinganeyeontheirqualityandduration(持续性)ofsleep.Then，duringafive－dayperiod，theyexposedthemtocoldviruses.Thosewhosleptanaverageoffewerthansevenhoursanight，itturnedout，werethreetimesaslikelytogetsickasthosewhoaveragedatleasteighthoursanight.Sleepandimmunity(免疫)，itseems，aretightlylinked.Studieshavefoundthatmammalsthatrequirethemostsleepalsoproducegreaterlevelsofdisease－fightingwhitebloodcells—butnotredbloodcells，eventhoughbothareproducedinbonemarrow(骨髓)andstemfromthesameprecursor.AndresearchersattheMaxPlanckInstituteforEvolutionaryAnthropologyhaveshownthatspeciesthatsleepmorehavegreaterresistanceagainstpathogens(病原体)．“Peoplewhohavelongersleepeverynight，”thePlanckscientistswrote，“appeartobeabletostrengthentheirimmunesystemsandbebetterprotected.”【语篇解读】随着天气变冷，越来越多的人将会感冒。如何才能在寒冷的季节避免感冒的侵袭？研究表明，充足的睡眠将会保护你不受感冒的威胁。1．Whichofthefollowingcanbethebesttitleofthepassage?A．TheBestWaytoAvoidCatchingaColdinWinter.B．TheRelationshipbetweenSleepandImmunity.C．LackofSleepIncreasestheRiskofCatchingaCold.D．HowtoStrengthenYourImmuneSystems?答案C[主旨大意题。通读全文可知本文主要讲述的是充足的睡眠可以减少得感冒的机会，也就是说缺乏睡眠会增加得感冒的风险。故C可作文章的标题。]2．Fromthepassagewecaninferthat________．A．vitaminCandechinaceacanhelpresistcoldsB．thelongeryousleep，thehealthieryouwillbeC．peopledidn'tknowtherelationshipbetweensleepandcoldsbeforeD．people'simmunitycanbegainedmostlyfromsleep答案A[推理判断题。根据短文第一句可知答案。B项没有依据；C项根据Butpayingattentiontoanoldpieceofadviceabouthavingenoughsleepeverydaymightbemoreimportant可排除；D项没有依据。]3．Wecandrawaconclusionfromthethirdparagraphthat________．A．mostpeoplesleeplessthansevenhoursadayB．sleeplessmayeasilyleadtosomeillnessesC．oneshouldsleepatleastsevenhoursadayD．sleepisthebestwaytotreatillnesses答案B[细节理解题。根据第三段内容可知，从这项研究中可以得出结论：睡眠少很容易导致疾病。]4．Howdoestheauthorexpresshisidea?A．Byusingtheresultsofstudies.B．Bycomparingsomenumbers.C．Bytellingsomeinterestingstories.D．Byreferringtosometheories.答案A[细节理解题。作者为了说明睡眠不足可导致感冒的风险，多次提到了研究的结果。故答案为A。]B体裁：记叙文话题：人物与医学词数：303时间：6′ChristianPoinchevalisa65－year－oldFrenchinventorwhohasdedicatedthepasteightyearsofhislifetomakingfarts(屁)smellbetter.Heclaimsthathisproduct—LutinMalin—whichhasanothername“craftyimp”—arepillsthatcanhelpeasedigestionandchangethesmelloffarts.What'smore，thepillscanchangesmellyfartsintosmellinglikerosesorviolets.Poinchevalclaimsthathisnewestinvention，justintimefortheholidays，makesfartssmelllikechocolate.AccordingtoPoincheval'swebsite，theideaforinventingthepillsapparentlycamefromadinnerwithfriendsduringwhichnobodycouldstopfarti...
