— Is the ____________ your teacher?
— Yes, he is. [ ]
A. man
B. she
C. woman
答案:A
The problem is ________will go to the meeting.
A.why
B.when
C.what
D.who
华法林中毒时主要解毒剂是()。
A.维生素K3
B.维生素B6
C.维生素C
D.维生素E
E.维生素K1