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高考◆英语◆安徽省題庫下載題庫

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21．From space, the earth looks blue. This is about seventy-one percent of its surface is covered by water.
(A). why
(B). how
(C). because
(D). whether

答案：C
難度： 計算中


21．From space, the earth looks blue. Thi..-阿摩線上測驗