(2013·高考安徽卷)From space,the earth looks blue.This is ________ about seventy­one p

(2013·高考安徽卷)From space,the earth looks blue.This is ________ about seventy­one p

题型:不详难度:来源:
(2013·高考安徽卷)From space,the earth looks blue.This is ________ about seventy­one percent of its surface is covered by water.
A.whyB.how
C.becauseD.whether

答案

解析
选C。本题考查表语从句的引导词。句意:从太空看,地球是蓝色的。这是因为它表面大约71%被水所覆盖。首先分析前后两句之间的逻辑关系,此处为“前果后因”,使用because,故选C项。because和why均可引导表语从句,解题时要弄清前后句之间的逻辑关系——是“前因后果”还是“前果后因”。“前因后果”使用why,“前果后因”使用because。
举一反三
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A.whatB.howC.whereD.when

题型:不详难度:| 查看答案
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题型:不详难度:| 查看答案
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A.that B.when C.what D.which

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