2000年1月大学英语四级听力原文
WhenIraqitroopsblewuphundredsofKuwaitioilwellattheendofGulfWar,scientistsfearedenvironmentaldisaster.Wouldblackpowderinthesmokefromthefirescirclestheglobeandblockoutthesun?
Manysaid“Noway?;rainwouldwashtheblackpowderfromtheatmosphere.ButinAmerica,airsamplingballoonshavedetectedhighconcentrationsofparticlessimilartothosecollectedinKuwait.didn'tcatchfire.IthasformedhugelakesintheKuwaitidesert.Theytrapinsectsandbirds,andpoisonavarietyofotherdesertanimalsandplants.
Theonlygoodnewsisthattheoillakeshavenotaffectedtheundergroundwaterresources.Sofar,theoilhasnotbeenabsorbedbecauseofthehardsandjustbelowthesurface.
Nothing,however,stopstheoilfromevaporating.Theresultingpoisonousgasesarechokingnearbyresidents.
Officialsaretryingtoorganizeaquickcleanup,buttheyarenotsurehowtodoit.Onepossibillityistoburntheoil.Getthoseblack-powderdetectorsready.
18.WhatwerethescientistsworriedaboutsoonaftertheGulfWar?
19.Whatwasthegoodnewsforscientists?
20.Whataretheofficialstryingtodoatthemoment?
20.A)Torestorethenormalproductionoftheoilwells.
B)Toestimatethelossescausedbythefires.
C)Toremovetheoilleftinthedesert.
D)Tousetheoilleftintheoillakes.
这道题为什么选择C没明白
