in the past 30 years china 空格 preat advances in the socialist revolution and socialistconstruction .A:has made ; B:had made; 选 哪个为什么.

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inthepast30yearschina空格preatadvancesinthesocialistrevolutionandsocialistconstruction.A:hasmade;B:had

in the past 30 years china 空格 preat advances in the socialist revolution and socialistconstruction .A:has made ; B:had made; 选 哪个为什么.
in the past 30 years china 空格 preat advances in the socialist revolution and socialist
construction .A:has made ; B:had made; 选 哪个为什么.

in the past 30 years china 空格 preat advances in the socialist revolution and socialistconstruction .A:has made ; B:had made; 选 哪个为什么.
A,没必要用过去完成时啊
因为这句话阐述的事对现在有影响,而非对过去有影响

A
这是现在完成时的时间标志。

A: has made