In order to keep fit he is trying to cigarettes and beer every day.A. cut back onB. cut

问题补充：

In order to keep fit, he is trying to cigarettes and beer every day.

A. cut back on

B. cut off

C. cut up

D. cut in

答案：

(答案→)A. cut back on

B. cut off

C. cut up

D. cut in

解析：

句意：为了保持健康，他每天尽力减少抽烟和喝酒。A.削减，减少 B.切断，中断 C.切碎 D.插嘴，超车。故选A。必修5中第二单元出现了这个短语，需加强记忆。