_____ his immediate help with my sick son, I treated him in an expensive restaurant. [ ]

A. In return for

B. In exchange for

C. In place of

D. In case of

桑塔纳2000AFE型发动机气门与导管的配合间隙应为（）mm

A.0.01—0.02

B.0.02—0.04

C.0.04—0.06

D.0.06—0.08