海文英语基础讲义].doc

《海文英语基础讲义].doc》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。

1、2009年海文考研导学班讲义词汇综述篇A完型填空A1关连词1Sleepisdividedintoperiodsofso-calledREMsleep,characterizedbyrapideyemovementsanddreaming,andlongerperiodsofnonprimesleep.41kindofsleepisatallwellunderstood,butREMsleepis42toservesomerestorativefunctionofthebrain.Thepurposeofnon-REMsleepisevenmore43.Thene

2、wexperiments,suchasthose44forthefirsttimeatarecentmeetingoftheSocietyforSleepResearchinMinneapolis,suggestfascinatingexplanations45ofnon-REMsleep.Forexample,ithaslongbeenknownthattotalsleep46is100percentfataltorats,yet,47examinationofthedeadbodies,theanimalslookcompletelynormal・Arese

3、archerhasnow48themysteryofwhytheanimalsdie.Therats49bacterialinfectionsoftheblood,50theirimmunesystems,theselfprotectingmechanismagainstdiseases,hadcrashed・41.(A)Either(B)Neither(C)Each(D)Any50.(A)if(B)asif(C)onlyif(D)ifonly2Vitaminsareorganiccompoundsnecessaryinsmallamountsinthediet

4、forthenormalgrowthandmaintenanceoflifeofanimals,includingman.Theydonotprovideenergy.41dotheyconstructorbuildanypartofthebody・Theyareneededfb「42foodsintoenergyandbodymaintenance・Therearethirteenormoreofthem,andif43ismissingadeficiencydiseasebecomes44.Vitaminsarcsimilarbecausetheyarcma

5、deofthesameclcmcnts-usuallycarbon,hydrogen,oxygen,and45nitrogen・Theyaredifferent46_theirelementsarearrangeddifferently,andeachvitamin翌oneormorespecificfunctionsinthebody.48enoughvitaminsisessentialtolife,althoughthebodyhasnonutritionalusefor49_vitamins.Manypeople,50,believeinbeingont

6、he"safeside”andthustakeextravitamins.However,awell-balanceddietwillusuallymeetallthebody'svitaminneeds.41.[A]either[B]so[C]nor[D]never46.[A]inthat[B]sothat[C]suchthat[D]exceptthat50.[A]nevertheless[BJtherefore[CJmoreover[DJmeanwhileA2适用语境1义近词Thefirstandsmallestunitthatcanbediscussedi

7、nrelationtolanguageistheword.Inspeaking,thechoiceofwordsis(41)theutmostimportance.Properselectionwilleliminateonesourceof(42)breakdowninthecommunicationcycle.Toooften,carelessuseofwords(43)ameetingofthemindsofthespeakerandthelistener.Thewordsusedbythespeakermay(44)unfavorablereaction

8、sinthelisten