____ new cure for this disease that medical experts have recently developed proves to be ______ most effective, although it can not completely kill all the viruses.

A．A; a

B．The; /

C．/; the

D．A; the

拉动经济增长的“三驾马车”通常是指（）。

A．投资、消费、进口

B．投资、公共消费、国际贸易

C．生产投资、出口、政府购买

D．投资、消费、出口