He lost all his money. The only thing he could do was to call his wife for help at this moment.

A．being called

B．to be called

C．calling

D．call

肺泡表面活性物质减少将会使

A．肺弹性阻力减小
B．肺顺应性增大
C．肺泡内液体层表面张力减小
D．小肺泡内压大于大肺泡内压