Cruises can be divided into three main categories depending on t

Cruises can be divided into three main categories depending on the _________.
A、destination resorts
B、cruise lines
C、duration of the trips
D、transatlantic ship traffic
【正确答案】：C
【题目解析】：(P137)根据旅行时间的长短，巡游可分为三种主要形式。