【完形填空Theworldisfullofvariety.Trees,grassesandother（2）covertheearth.Abovethesunshinesontheearthasitturnsintheuniverse.Thisistheworldthatwesee（4）useveryday.Thisworldisalsotheworldofchemistry.Inthi】

　　完形填空

　　Theworldisfullofvariety.Trees,grassesandother（2）covertheearth.Abovethesunshinesontheearthasitturnsintheuniverse.Thisistheworldthatwesee（4）useveryday.

　　Thisworldisalsotheworldofchemistry.Inthisworldonefromofmatteris（6）changingintoanother.Wecannotalwaysseeit（7）withoureyes.Yetitistaking（8）allthesame.Themillionsofformsontheearth,livingornot,are（9）aboutonehundredchemicalelements.Thesameelemantsarefoundeverywhere.Thiswaybeasurprisetoyou,butitistrue（10）oftheearth（10）ofthewholeuniverse.

　　（）2.-A.planetsB.planesC.plantsD.put

　　（）4.-A.aboveB.underC.roundD.about

　　（）6.-A.sometimesB.neverC.anytimeD.always

　　（）7.-A.happenB.tohappenC.happeningD.happened

　　（）8.-A.playB.placeC.spaceD.room

　　（）9.-A.madewithB.madebyC.madeinD.madeof

　　（）10.A.notonly...butalsoB.either...orC.neither...norD.so...that