butitisthirs的精選

問題詳情：閲讀表達;閲讀短文，根據要求完成下面各個小題。Theworldisnothungry，butitisthirsty．Itseemsstrangethatnearly3／4oftheearthiscoveredwithwaterwhilewesayweareshortof（短缺）water．Why？Becauseabout97％ofwaterontheea...