In view of the worsening environment, the local government is seeking advice fro

题干

In view of the worsening environment, the local government is seeking advice from Professor Smith, who is an expert ______ it.

A．within

B．for

C．on

D．beyond

上一题下一题 0.85难度单项选择更新时间:2011-04-22 04:39:12

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