Pollution is a serious problem. Scientists have _______ some good ways to save it.

A．come up with

B．come on

C．come out

D．come up

垂体功能低下是做（）检查的指征

A.甲状腺吸¹³¹I试验

B.T₃抑制试验.

C.过氯酸盐释放试验

D.TRH兴奋试验

E.以上都不是