听力原文：W: It's five o'clock already and I haven't finished typing this report.
M: Don't worry. The clock is half an hour fast. You still have enough time to finish it.
Q: When did this conversation take place?
(15)
A．At five o'clock.
B．At four thirty.
C．At five thirty.
D．At four o' clock.

A.
M:
B.
Q:
C.At
D.
B．At
E.
C．At
F.
D．At
G.

以下哪些药物可引起痤疮样皮疹( )

听力原文：W: It's five o'clock already and I haven't finished typing this report.M: Don't worry. The clock is half an hour fast. You still have enough time to finish it.Q: When did this conversation take place?(15)A．At five o'clock.B．At four thirty.C．At five thirty.D．At four o' clock.