2. 外语
  3. China moved to ______ its grain production when its grain output had kept declining for five consecutive years.

China moved to ______ its grain production when its grain output had kept declining for five consecutive years.

admin2012-06-26  50
问题 China moved to ______ its grain production when its grain output had kept declining for five consecutive years.
选项 A、turn up
B、take up
C、step up
D、make up
答案C
解析 turn up：出现，露面；take up：占用，着手于，开始做……，拿起；step up：增加；make up：编造，构成，弥补(for)
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