This is      challenging job I mentioned to you the other day． Have you had anyone in        mind for it now?

A．a, the

B．the;/

C．the, the

D．a:/

下列各项中，哪项是治疗急性中毒的主要依据（）.

A.毒物接触史

B.临床表现

C.毒物分析

D.毒物接触史+毒物分析

E.毒物接触史+临床表现