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文件名称:高考英语一轮复习 Unit 4 Adversity and Courage 作业.doc
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UNIT4AdversityandCourage

A组·基础巩固

Ⅰ.语法填空

A

TodayweknowAntarcticaasanextremeenvironment1.________(contain)iceandsnow.Butnewresearchprovidesevidencethattheareawasverydifferentinthepast,2.________wasfoundinsideapieceofEarthsediment(沉淀物)gatheredbyresearchers