阅读理解及完型填空.doc

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1、中考英语考前阅读理解强化训练Readingmaterial阅读理解(一)1.Unlesswespendmoneytospot(认出，发现)andpreventasteroids(小行星)now,onemightcrashintoEarthanddestroylifeasweknowit,saysomescientists.Asteroidsarebiggerversionsofthemeteoroids(流星体)thatraceacrossthenightsky.MostorbitthesunfarfromEarthand

2、don’tthreatenus.ButtherearealsothousandsofasteroidswhoseorbitsputthemonacollisioncoursewithEarth.But$500millionworthofnewtelescopesrightnow,thenspend$10millionayearforthenext25yearstolocatemostofthespacerocks.Bythetimewespotafatalone,thescientistssay,we’llhaveaway

3、tochangeitscourse.Isitworthit?Twothingsexpertsconsiderwhenjudginganyriskare(i)Howlikelytheeventis;(2)Howbadtheconsequencesiftheeventoccurs.ExpertsthinkanasteroidbigenoughtodestroylotsoflifemightstrikeEarthonceevery500,000years.Soundsprettyrarebutifonedidfall.Itwou

4、ldbetheendoftheworld.“Ifwedon’ttakecareofthesebidasteroids,they’lltakecareofus,”saysonescientist.“it’sthatsimple.”Thecure,though,mightbeworsethanthedisease.Dowereallywantfleets(舰队，车队)ofnuclearweaponssittingaroundonEarth?“theworldhaslessfearfromdoomsday(毁灭性)rocksth

5、anfromagreatnuclearfleetsetagainstthem.”SaidaNewYorkTimesarticle.1.Whatdoesthepassagesayaboutasteroidsandmeteoroids?A.Theyareheavenlybodiesdifferentincomposition.B.Theyareheavenlybodiessimilarinnature.C.Theyaremoreasteroidsthanmeteoroids.D.Asteroidsaremoremysterio

6、usthanmeteoroids.2.WhatdoscientistssayaboutthecollisionofanasteroidwithEarth?A.Itisveryunlikelybutthedangerexists.B.Suchacollisionmightoccuronceevery25years.C.CollisionsofsmallerasteroidswithEarthoccurmoreoftenthanexpected.D.It’sstilltooearlytosaywhethersuchacolli

7、sionmightoccur.3.Whatdopeoplethinkofthesuggestionofusingnuclearweaponstoalterthecourseofasteroids?A.Itsoundspracticalbutitmaynotsolvetheproblem.B.Itmaycreatemoreproblemsthanitmightsolve.C.ItisawasteofmoneybecauseacollisionofasteroidswithEarthisveryunlikely.D.Furth

8、erresearchshouldbedonebeforeitisprovedapplicable.1.Wecanconcludefromthepassagethat__A.Whilepushingasteroidsoffcoursenuclearweaponswoulddestroytheworld.B