2. 财经
  3. This area has been free from Foot-and-Mouth Disease ( ) two years.

This area has been free from Foot-and-Mouth Disease ( ) two years.

admin2009-09-28  20
问题 This area has been free from Foot-and-Mouth Disease (    ) two years.
选项 A、for
B、in
C、after
D、before
答案A
解析
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