There is a great danger if the driver has been drinking alcohol or taking drugs, or by speeding or breaking down traffic laws.
A. showing off
B. showing around
C. showing up
D. showing in
网友回答
(答案→)A. showing off
B. showing around
C. showing up
D. showing in
解析：考查短语辨析。show off 炫耀，show around领着参观，show up 出现，show in 领入，句意：如果司机一直喝酒或吸毒或通过加速或破坏交通规则来炫耀，会有很大的危险。所以选A。