32. (2013 •安徽) 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

32. C

32. C解析:考查名詞性從句。句意:從太空 上看，地球看起來(lái)是藍(lán)色的。這是因?yàn)樗?表面大約71 %都被水覆蓋著。

because引 導(dǎo)表語(yǔ)從句，表示原因，符合句意。why意 為“為什么”，所接句子表示結(jié)果；how表 示方式;whether意為“是否”。

題目來(lái)源：2016年周測(cè)月考直通高考高中英語(yǔ)必修3外研版 > 周測(cè)月考卷4 階段性測(cè)試（一）

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