問題詳情
40. What does “free-ranging” birds mean?
(A)Birds are not logged with tagged sensors by the researchers.
(B)Birds can fly most of time without a single flap.
(C)Birds are not reared by humans.
(D)Birds can fly in different altitude of the sky.
參考答案
答案：C
統計：A:0,B:2,C:1,D:1,E:0
難度：計算中