The agreement on trade relations between China and Australia comes into force in July 2015.
A、ends
B、arrives at
C、takes effect
D、calls off
【正确答案】：C
【题目解析】：comes into force意为“生效”；end结束；arrive at到达；take effect生效；call off取消；故选C。
The agreement on trade relations between China and Australia com
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