大学英语四级选词填空模拟题

第一篇关于减肥SectionADirections:Inthissection,thereisapassagewithtenblanks.Youarerequiredtoselectonewordforeachblankfromalistofchoicesgiveninawordbankfollowingthepassage.Readthepassagethroughcarefullybeforemakingyourchoices.Eachchoiceinbankisidentifiedbyaletter.PleasemarkthecorrespondingletterforeachitemonAnswerSheet2withasinglelinethroughthecenter.Youmaynotuseanyofthewordsinthebankmorethanonce.Questions47to56arebasedonthefollowingpassage.PerhapslikemostAmericansyouhavesomeextrapoundsto47.Youmayevenhavetriedafaddietortwo,butfoundyourselfrightbackwhereyoustarted.Thekeytoweightlossisregular48activity.Andsurprisingly,youdon'thavetogiveupeatingormakethegymyoursecondhometoseelong-term,49effects.Youbodyneedsacertainamountofenergytomaintainbasic50suchasbreathing,bloodcirculationanddigestion.Theenergyrequiredtokeepyourorgansfunctioningisreferredtoastherestingorbasalmetabolicrate.Anytimeyouareactive,51energyisrequired.Itisobtainedfromglycogenandfatstoredintheblood,liver,andmuscles.Thekeytolosingweightistodrawonthefatratherthanonthecarbohydratereserves.Whichofthetwoenergysourcesyouusedependsontheintensityand52ofyouractivity.Thehighertheintensity,themoreyourbodywillpullfromthestoredcarbohydrates.Thelowertheintensity,themoreyourbodywill53onfatasitsfuel.Aerobicexerciseismost54forweightloss.Whenyouperformaerobicactivitiesyou55contractlargemusclegroupssuchasyourlegsandarms.Walking,running,rollerblading,swimming,dancing,andjumpingjacksareallformsofaerobicactivity.Surprisingly,ifyouraerobicactivityislowtomoderatelyintenseandoflongduration,youwillburnmorefatthanifyouhad56inashortburstofhigh-intensityexercise.Inshort,abrisk30-minutewalkwillburnfatwhilea100-yardsprintwillburnglycogen.[A]positive[B]additional[C]duration[D]effectivee[E]shed[F]physical[G]food[H]functions[I]participated[J]rely[K]cut[L]repeatedly[M]uses[N]little[O]obvious47.E该空需填入动词原形，结合原意“和大多数美国人一梯状，你(的体重)可能也有几磅需要________”可知，E(去除)最符合文意。48.F结合常识和下文可知，F最符合文意。49.A结合句意“令人惊奇的是，为了看到长期________效果你不必节食或常去健身馆”，可知空格处需填一形容词，初选后留下A、D。由于下文只是讲到运动会帮助减肥，但并未说明它的效果明显，所以此处宜选用意思上更宽泛的positive(正面的，有效的)。50.H下文举例的breathing,bloodcirculationanddigestion都是人体的基本功能，且其后的functioning已给出了提示，故H最符合文意。51.B该空需填入形容词，结合常识和句意“任何时候只要你活动，你都需要________能量”来看选项，B(额外的)符合文意。52.C该句句意为“采用这两种能量消耗来源中的哪一种取决于你活动的强度和________”，结合下文提到的...lowtomoderatelyintenseandoflongduration...可知C最符合文意。53.J结合句意“(活动的)强度越低，身体越________于脂肪作为其燃料”，该空应填入能和on搭配的动词，J最符合文意。54.D结合常识可知，有氧运动是最有效的减肥方式，选项中D最符合文意。55.L该空需填入副词，选项中只有L和N可作副词，由下文提到的walking,running,swimming,dancing,andjumping等可推知在这些有氧运动中四肢的活动是反复的，故排除N。56.I该空需填入动词的过去分词，结合句意“如果你已经________高强度、爆发性的运动，你会燃烧更多的脂肪”可知I最符合文意。第二篇关于太阳花Asunflowerisasunflower.Amobilephoneisamobilephone.Butcanyou47thetwotodosomethingforyourlocal48?Itmaywellbepossible.Whenyouhavefinishedwithyourmobilephoneyouwillbeableto49itinthegardenoraplantpotandwaitforittoflower.50,abiodegradable(生物可降解的)mobilephonewasintroducedbyscientists.Itishopedthatthenewtypeofphonewillencourage51torecycle.Scientistshavecomeupwithanewmaterialoverthelastfiveyears.Itlookslikeanyother52andcanbehardorsoft.andabletochangeshape.Overtimeitcanalsobreakdownintothesoilwithoutgivingoutanytoxic53.Britishresearchersusedthenewmaterialtodevelopaphonecoverthatcontainsasunflowerseed.Whenthisnewtypeofcoverturnsintowaste,it54nitrates(硝酸盐).Thesefeedtheseedandhelptheflowergrow.Engineershavedesignedasmall55windowtoholdtheseed.Theyhavemadesureitonlygrowswhenthephoneisthrownaway.We'veonlyputsunflowerseedsintothecoverssofar.Butweareworkingwithplant56tofindoutwhichflowerswouldperformbest.Maybewecouldputrosesinnexttime,saidonescientist.[A]Recently[B]consumer[C]chemical[D]environment[E]combine[F]transparent[G]buy[H]companion[I]experts[J]forms[K]bury[L]paper[M]paper[N]plastic[O]Usually47.E该空应填入动词原形，选项中只有E、G和K是动词原形。文章前两句点明两者是截然不同的东西，这里用but一转，讲能不能把两者结合起来，E最符合文章。48.D本题需通读下文，对整篇文章有所了解才能得出答案。由下文的相关信息词biodegradable(生物可降解的)，recycle(回收)等可知D最符合文意。49.K该名前半句讲手机报废，所以极可能是把废弃的手机扔进或埋进花园，动词原形的E.G.K中，K最符合文意。50.A分析空格所在句的句子结构，空格处应充当状语成分且需大写，结合词义，选项中A符合文意。51.B结合句意“这种新型手机有望激励________进行回收利用”可推知此空应填入表示人的名词，故B最符合文意。52.N前句提到科学家开发了一种新材料，接着谈到这种新材料像其他________一样容易塑形，这正是塑料的特性，故选N。53.C空格所在句意为“随着时间的流逝，它也能分解到土壤里，而且不会释放出任何有毒的________”，分解多半与化学有关，所以空格处应填入chemicals(化学物质)。54.J该空需填入第三人称单数的动词形式，选项中只有J符合文意。55.F该空需填入一个形容词，选项中只有F和O是形容词，F(透明的)符合文意。因为只有透明的才方便工程师观察，才有下面的makesure一说。56.I由句意“但我们(工程师)现在正和植物________合作…”可知，空格处应选表一类人的名词，且用可数形式，B、I中I符合文意。第三篇关于外教Questions47to56arebasedonthefollowingpassage.Inrecentyears,moreandmoreforeignersareinvolvedintheteachingprogramsoftheUnitedStates.Boththeadvantagesandthedisadvantages47usingforeignfacultyinteachingpositionshavetobe48,ofcourse.Itcanbesaidthattheforeignbackgroundthatmakesthefacultymemberfromabroadanassetalso49problemsofadjustment,bothfortheuniversityandfortheindividual.Theforeignresearchscholarusuallyisolateshimselfinthelaboratoryasameansofprotection;50,whatheneedsistobefittedtoahighlyorganizeduniversitysystemquitedifferentfrom51athome.Heisfacedinhisdailyworkwithdifferencesinphilosophy,arrangementsofcoursesandmethodsofteaching.Boththevisitingprofessorandhisstudents52acommongroundi