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15.We all know clearly the immediate future,________,however,it is hard to tell what lies.(  )
A.through whichB.within whichC.beyond whichD.towards which

分析 我们都清楚地知道不远的未来,然而,很难说将来会变成什么样.

解答 答案:C.
考查非限制性定语从句.非限制性定语从句放在逗号后与主句隔开,根据选项可知,此处考查介词+关系词 引导非限制性定语从句的用法,先行词是the immediate future"最近的将来",故关系词选which,根据句意可知与"最近的将来"形成比较的是久远的将来,那么选项中的介词through 通过,within在…之内,beyond超出,towards朝向,符合意思的是beyond,故选C.

点评 本题考查非限制性定语从句.非限制性定语从句需要用逗号与句子隔开,介词+关系词也可以用来引导非限制性定语从句,先行词指人时用whom,先行词指物时,用which,介词的选择需要看句子的要求.

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