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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1870

From space,the earth looks blue.This is ________ about seventyone percent of its surface is covered by water.

A.why B.how
C.because D.whether
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Fromspace,theearthlooksblue.Th