問題詳情
36. What does the passage mainly discuss?
(A)Birds’ flying experiences is a cheaper way to avoid violent turbulences.
(B)Birds’ flying knowledge can provide clues to predict and cope with
turbulences.
(C)Onboard sensors to aircrafts are not effective to prevent turbulences.
(D)Violent turbulences, causing injuries and deaths, are unpredictable.
參考答案
答案：B
統計：A:0,B:4,C:0,D:0,E:0
難度：計算中