Our country ______ great changes in the last 30 years and it is no longer        it used to be.

A．went through; what

B．went through; that

C．has experienced; that

D．has experienced; what

马钱子的功效是

A．通络散结，消肿定痛

B．通络散结，攻毒祛腐

C．强筋健骨，消肿定痛

D．强筋健骨，通络散结

E．强筋健骨，祛风除湿