英語(yǔ)四級(jí)閱讀訓(xùn)練及答案詳解

1、英語(yǔ)四級(jí)閱讀訓(xùn)練及答案詳解Questions56tO60arebasedonthefollowingpassage.Itwasoncethoughtthatairpollutionaffectedonlytheareaimmediatelyaroundlargecitieswithfactoriesandheavyautomobiletraffic.Today,weknowthatalthoughthesearetheareaswiththeworstairpollutiontheproblemisliterallyworldwide.Onseveraloccasionsoverthepast

2、decadeaheavycloudofairpollutionhascoveredtheentireeasternhalfoftheUnitedStatesandledtohealthwarningseveninruralareasawayfromanymajorconcentrationofmanufacturingandautomobiletraffic.Infacttheveryclimateoftheentireearthmaybeaffectedbyairpollution.Somescientistsfeelthattheincreasingconcentrationofcarbo

3、ndioxideintheairresultingfromtheburningoffossilfuelscoalandoiliscreatingaugreenhouseeffectv-holdinginheatreflectedfromtheearthandraisingtheworld*saveragetemperature.IfthisviewiscorrectandtheworldrstemperatureisraisedonlyafewdegreesomuchofthepolaricecapwillmeltandcitiessuchasNewY0rkBoston,MiamiandNew

4、Orleanswillbeunderwater.Anotherview,lesswidelyheld,isthatincreasingparticulatematterintheatmosphereisblockingsunlightandloweringtheearthstemperature-aresultthatwouldbeequallydisastrous.Adropofjustafewdegreescouldcreatesomethingclosetonewiceageandwouldmakeagriculturedifficultorimpossibleinmanyofourto

5、pfarmingareas.Atpresentwedonotknowforsurethateitheroftheseconditionswillhappen,thoughonerecentgovernmentreportpreparedbyexpertsinthefieldconcludedthatthegreenhouseeffectisverylikely.Perhapsifweareverylucky,thetwotendencieswilloffseteachotherandtheworldtstemperaturewillstayaboutthesameasitisnow.56. A

6、ccordingtothepassage,peopletodaythinkthatairpollution.AexistsmerelyinurbanandindustrialareasBmayhaveaneffectontheentireearthCcauseswidespreaddamageinthecountrysideDisnotsoseriousasitusedtobe57. Theugreenhouseeffectvresultsfrom.AtheconcentrationofcarbondioxideintheairBtheincreasingparticulatematterin

7、theatmosphereCtheburningoffirewoodDtheblockingofsunlight58. Whatdoestheauthorthinkofthepossibilityofanewiceage?AHerejectsitasbeingungrounded.BHeholdsthesameview.CHeisuncertainofitsoccurrence.DHethinksthatwouldhappensoon.59. TheworduoffsetMLine3,Para.4means.AslipintoBcatchupwithCsetupDmakeupfor60. Th

8、epassageismainlyabout.AthepotentialeffectofairpollutionBthepossibilityofanewiceageCtheeffectsofglobalwarmingDthecausesofclimatechangeQuestions61tO65arebasedonthefollowingpassage.Beckerhadoneoccasionalanxiety：thesuspicionthatheownedmorethanwouldfitcomfortablyintothecase.Thefeeling,whenitcame,wasthesi

9、gnalforhimtothrowsomethingawayorjustleaveitlyingabout.Thiswastheautomaticfateofhisworn-outclothesforexample.Havingnouseforchoiceorvariety,hekeptjustaraincoatsasuit,apairofshoesandafewshirts,socksandsoon,nomoreintheclothingline.Heboughtandreadmanybooksandleftthemwhereverhehappenedtobesittingwhenhefin

10、ishedthem.Theyquicklyfoundnewowners.Beckerwasaprofessionaltraveler,interestedandinterestin9.HewasnotonetOdo”acountryinaweekoracityinthreedays.Helikedtogetthefeelofaplacebylivinginit,readingitsnewspaperswatchingitsTVanddiscussingitsaffairs.Healwaystriedtomakeafewfriends,ifnecessaryevenbystoppingasuit

11、able-lookingpersoninthestreetandtalkingtohim.Itworkedwellinaboutonecaseinten.ThoughBecker*shealthgavehimnocauseforalarm,hemade,apointofseeingadoctorassoonashearrivedanywhere.Adoctorknowsaplaceanditspeoplebetterthananyonetheusedtosay.Heneverwenttoseeadoctor,healwayssentforone,that,hefound,wasthequick

12、estwaytogainconfidences,whichcameoutfreelyassoonashementionedthathewasawriter.Beckerwasanartistaswell.Hepaintedpicturesofhisplacesand,whenhehadgatheredenoughinformation,hewroteaboutthem.Hesoldhiswork,throughanagent,tonewspapersandmagazines.Itwasanagreeablesortoflifeforagoodsocialmixer,livednearlyalw

13、aysinfineweather,andasBeckerneverstayedanywhereforlong,heenjoyedthesatisfyingadvantageofpayingverylittleintax.61. Accordingtothepassage,theanxietyofBeckerwas.AthedoubtthatheownedtoomuchclothesBthethoughtofhavingtoomuchbaggageCthemiserablefateofhiswornoutclothesDthedeclineinhismemory62. Whatisthefate

14、ofBeckersbooks?ATheywerekeptinhiscase.BTheyweresenttohisfriends.CTheyweredonatedtoothersinneed.DTheywereleftanywhere.63.BeckerwouldseeadoctorashearrivedatanewplacebecauseAhishealthwasindangerBhewantedtomakefriendswiththedoctorCheintendedtogetconfidencesfromthedoctorDhewantedtoknowtheplaceanditspeoplethroughthedoctor64.HowdidBeckerfeelabouttaxation?AHewaspleasedheonlyhadtopaylittle.BHefeltashamedofnotpayingtaxes.CHeworriedaboutit,sohemovedfromoneplacetoanother.DHehateditsomuchthathebrokethetaxlaws.65.Wh