Question

Since the opening and reform policy, China    a boom in its economy.

A．enjoys

B．has been enjoying

C．enjoyed

D．having enjoyed

Answer 1

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。