2. 外语
  3. The conference has been held to discuss the effects of tourism ______ the wildlife in the area.

The conference has been held to discuss the effects of tourism ______ the wildlife in the area.

admin2009-06-28  31
问题 The conference has been held to discuss the effects of tourism ______ the wildlife in the area.
选项 A、in
B、on
C、at
D、with
答案B
解析 会议已经讨论了关于对这一地区野外旅行的影响。本题考查介词用法。讨论哪个方面的问题用on。故选B。
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