China's GDP grew by 7.1 percent in the first half of this year, proved its proactive macr

发布时间:2020-08-16 10:18:27


China's GDP grew by 7.1 percent in the first half of this year,      proved its proactive macro-economic policies were effective 
A. it
B. that
C. what
D. which

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A. it
B. that
C. what
(答案→)D. which
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