考前阅读理解强化训练中考英语教案

”saysonescientist“it’sthatsimple”Thecure，though，saysomescientistsAsteroidsarebiggerversionsofthemeteoroids(流星体)thatraceacrossthenightskyMostorbitthesunfarfromEarthanddon’tthreatenusButtherearealsothousandsofasteroidswhoseorbitsputthemonacollisioncoursewithEarthBut$500millionworthofnewtelescopesrightnow，发现)andpreventasteroids(小行星)now，thenspend$10millionayearforthenext25yearstolocatemostofthespacerocksBythetimewespotafatalone，thescientistssay，they’lltakecareofus，onemightcrashintoEarthanddestroylifeasweknowit，中考英语考前阅读理解强化训练Readingmaterial阅读理解1Unlesswespendmoneytospot(认出，we’llhaveawaytochangeitscourseIsitworthit?Twothingsexpertsconsiderwhenjudginganyriskare(i)Howlikelytheeventis;(2)HowbadtheconsequencesiftheeventoccursExpertsthinkanasteroidbigenoughtodestroylotsoflifemightstrikeEarthonceevery500，000yearsSoundsprettyrarebutifonedidfallItwouldbetheendoftheworld“Ifwedon’ttakecareofthesebidasteroids，mightbeworsethanthediseaseDowereallywantfleets(舰队，车队)ofnuclearweap，