You’d better have a talk with your friend _____, and then the misunderstanding will disappear.

A．side by side

B．hand in hand

C．face to face

D．arm in arm

治疗斑疹伤寒的首选药是（）。

A.四环素

B.氯霉素

C.青霉素G

D.庆大霉素

E.红霉素