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2.I think we've spent enough time on this problem---let's _______ more important matters now.(  )
A.ask forB.look forC.turn upD.turn to

分析 我想我们已经在这个问题上花了足够的时间了,现在让我们谈谈更重要的问题.

解答 答案D.ask for请求…; 要求…; look for寻找(某人或某物); turn up出现,到来,露面;开大,调高(收音机、暖气等);turn to求助于;(使)转向;(使)变成;翻书到.根据上文的语境"I think we've spent enough time on this problem我想我们已经在这个问题上花了足够的时间了"可知下文表达的意思是"现在让我们谈谈(转向)更重要的问题";故答案选D.

点评 本题考查动词短语的辨析.英语中有的词组没有捷径,只有平时加强记忆,要注意区别,记忆的时候不能忽视,这是常见的命题方式.平时要加强记忆,做题时,别忘了要结合上下文句意判断.

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