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1、中考英語考前閱讀理解強(qiáng)化訓(xùn)練Readingmaterial閱讀理解(一)1.Unlesswespendmoneytospot(認(rèn)出，發(fā)現(xiàn))andpreventasteroids(小行星)now,onemightcrashintoEarthanddestroylifeasweknowit,saysomescientists.Asteroidsarebiggerversionsofthemeteoroids(流星體)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(艦隊，車隊)ofnuclearweaponssittingaroundonEarth?“theworldhaslessfearfromdoomsday(毀滅性)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
