問題詳情
26. Which one of the following questions is central to this passage?
(A) What happens to each sleep cycle?
(B) How to sleep soundly on a plane?
(C) How to prepare for your first flight?
(D) What makes a seasoned traveler stand out?
參考答案
答案：B
統計：A:0,B:17,C:3,D:0,E:0
難度：計算中