China moved to ______ its grain production when its grain output had kept declin

游客2025-03-28 20

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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Chinamovedto______itsgrainproductionwhenitsgrainoutputhadkeptdeclin