______ relation between China and Russia has developed steadily since Vladimir Putin was re-elected______ president.                                  

A．The; the

B．The; /

C．A; the

D．The; a

根据哈罗德的分析，如果有保证的增长率Gw大于自然增长率Gn，经济将（）。

A.持续高涨

B.长期萧条

C.均衡增长

D.不能确定