孕妇尿中出现的各种激素哪一种与胎儿胎盘功能关系最为密切（）

A.皮质醇

B.孕酮

C.雌二醇

D.雌三醇

E.醛固酮

American people were proud and optimistic because they felt they had saved the world and now were helping to rebuild Europe and Japan.

A．True

B．False