应采取何项措施：

A．输血输液

B．立即注射催产素

C．尽快钳取宫腔内容物

D．给予氧气吸入

E．静脉注射阿托品

There is one suggestion that the footsteps of crowds walking the streets in major cities could （） energy.

A.assemble

B.gather

C.generate

D.yield