A lot of language learning. has been discovered.is happening in the first year of life.so parents should talk much to their children during that period.(2012·安徽.29)A．as B．it C．which D．this 题目和参考答案——青夏教育精英家教网—

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A lot of language learning，________ has been discovered，is happening in the first year of life，so parents should talk much to their children during that period.(2012·安徽，29)

A．as B．it C．which D．this

【解析】句意：正如人们所发现的那样，许多语言学习是在生命的第一年进行的，所以在那个时期父母应该多跟孩子说话。考查非限制性定语从句中关系代词的选用。根据句子结构可知，空格处为非限制性定语从句的引导词，先行词为一个句子(即A lot of language learning is happening...)，先行词在定语从句中作主语。当定语从句为被动语态时，常用as作主语来引导定语从句；如果从句中行为动词是主动语态，一般用which作主语。故答案为A项，as意为：正如。

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2.A.warning　B．message

C．notice　D．information

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C．result　D．deal

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C．fat　D．big

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