With April 18’s railway speedup, highway and air transport will have to pete with service for passengers.
A. good
B. better
C. best
D. the best
网友回答
A. good
(答案→)B. better
C. best
D. the best
解析：句子大意为：由于铁路提速了，所以高速公路和航空业要提高服务质量来竞争客源。因将“高速公路和航空”与“铁路”比较，故用比较级。