【題目】So _______life will continue to live on the earth depend on whether this problem can be solved.

A. whetherB. that

C. whatD. if

【答案】A

【解析】

考查主語從句。句意：因此地球上是否會(huì)繼續(xù)存在生命取決于這個(gè)問題能否能到解決。本句為主語從句，根據(jù)句意可知此處表示“是否”，故A項(xiàng)正確。

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