----Did you look up the time of the high-speed trains to Shanghai?

----Yes, the early train is __________ to leave at 5:30 a.m.

A．likely

B．possible

C．due

D．about

甲状腺危象患者与严重甲亢患者（）

A.容易鉴别

B.不易区分

C.只是通过临床鉴别

D.只有通过实验室鉴别

E.无法区分