China has successfully sent up two manned spaceships, which is a _____ achievement that all Chinese

people can take great pride in. [ ]

A. brilliant  

B. primary    

C. professional    

D. permanent

（）推动经济结构战略性调整的主要手段。

A.城镇化

B.加强对医疗保险的投资

C.加强对基础设施的投资

D.普及高等教育