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The need to upgrade industrial equipment is great:official figures show that in 1980,20% of China’s capital stock was already 10-20 years behind that of the West.
The need to upgrade industrial equipment is great:official figures show that in 1980,20% of China’s capital stock was already 10-20 years behind that of the West.
A.increase
B.import
C.improve
D.get
正确答案是C
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