Misunderstandings ________ from lack of social communication, unless ________ properly, may lead to serious problems.

A．arisen; handling

B．arising; handled

C．rising; handled

D．risen; handling

哪种激素是甾体激素（）

A.促肾上腺皮质激素

B.促甲状腺激素

C.肾上腺皮质激素

D.甲状腺激素

E.前列腺素