英语阅读理解：some scientists

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1、英语阅读理解：somescientists　　中考英语阅读理解考前强化训练题　　阅读理解　　1.Unlesswespendmoneytospotandpreventasteroidsnow,onemightcrashintoEarthanddestroylifeasweknowit,saysomescientists.　　Asteroidsarebiggerversionsofthemeteoroidsthatraceacrossthenightsky.MostorbitthesunfarfromEarthanddo

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

3、waytochangeitscourse.　　Isitworthit?TwothingsexpertsconsiderwhenjudginganyriskareHowlikelytheeventis;Howbadtheconsequencesiftheeventoccurs.ExpertsthinkanasteroidbigenoughtodestroylotsoflifemightstrikeEarthonceevery500,000years.Soundsprettyrarebutifonedidfall.Itw

4、ouldbetheendoftheworld.“Ifwedon’ttakecareofthesebidasteroids,they’lltakecareofus,”saysonescientist.“it’sthatsimple.”　　Thecure,though,mightbeworsethanthedisease.DowereallywantfleetsofnuclearweaponssittingaroundonEarth?“theworldhaslessfearfromdoomsdayrocksthanfro

5、magreatnuclearfleetsetagainstthem.”SaidaNewYorkTimesarticle.　　1.Whatdoesthepassagesayaboutasteroidsandmeteoroids?　　A.Theyareheavenlybodiesdifferentincomposition.　　B.Theyareheavenlybodiessimilarinnature.　　C.Theyaremoreasteroidsthanmeteoroids.　　D.Asteroidsaremore

6、mysteriousthanmeteoroids.　　2.WhatdoscientistssayaboutthecollisionofanasteroidwithEarth?　　A.Itisveryunlikelybutthedangerexists.　　B.Suchacollisionmightoccuronceevery25years.　　C.CollisionsofsmallerasteroidswithEarthoccurmoreoftenthanexpected.　　D.It’sstilltooearlyt

7、osaywhethersuchacollisionmightoccur.　　3.Whatdopeoplethinkofthesuggestionofusingnuclearweaponstoalterthecourseofasteroids?　　A.Itsoundspracticalbutitmaynotsolvetheproblem.　　B.Itmaycreatemoreproblemsthanitmightsolve.　　C.Itisawasteofmoneybecauseacollisionofasteroid

8、swithEarthisveryunlikely.　　D.Furtherresearchshouldbedonebeforeitisprovedapplicable.　　4.Wecanconcludefromthepassagethat__　　A.Whilepushingasteroidsoffcoursenuclearweaponswould