resultofthisevent,agreatdustcloudformedinthesky__________________(挡住了光线).(block)58.Whenwegetclosertothemoon,weshallfeelitsgravitypullingus,butitwillnot___________________(和…一样强的引力)astheearth’s.(pull)59.IfoundIwascarried_________________(两倍远)asontheearthandfellover.(far)60.Leavingthemoon’sgravitywasnotaspainful____________________(像离开地球的引力).(leave)61.Itissowettherethatthetreesareextremelytall,some__________________(高达90米).(measure)62.BecauseoftheGreatLakes,theylearned,Canadahas_________________(比任何一个国家更多的淡水)intheworld.(much)63.VaticanCityStatehasanareaof0.44squarekilometerswithaborder______________(长3.2千米).(measure)64.Itisharmfulforthosewhoarestillteenagers________________(节食)inordertoloseweight.(diet)65._______________________(谁将为事故作出解释)isthemostimportantthingwecareaboutatpresent.(account)
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