Since the opening and reform policy, China a boom in its economy.A.enjoysB.has b
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Since the opening and reform policy, China a boom in its economy.
A.enjoys
B.has been enjoying
C.enjoyed
D.having enjoyed
试题答案
B
考查时态。句意：自从改革开放政策以来，中国一直经济繁荣。用现在完成进行时态表示的是从过去到现在还要持续下去。根据题意中国的经济还要繁荣下去。故选B。