阅读表达;阅读短文,根据要求完成下面各个小题。Theworldisnothungry,butitisthirs...
08-20
问题详情:阅读表达;阅读短文,根据要求完成下面各个小题。Theworldisnothungry,butitisthirsty.Itseemsstrangethatnearly3/4oftheearthiscoveredwithwaterwhilewesayweareshortof(短缺)water.Why?Becauseabout97%ofwaterontheea...