問題詳情
18.Which of the following is a disadvantage of communal roosts that is mentioned in the passage?
(A)Diseases easily spread among the birds.
(B)Groups are more attractive to predators than individual birds.
(C)Food supplies are quickly depleted
(D)Some birds in the group will attack the others.
(A)Diseases easily spread among the birds.
(B)Groups are more attractive to predators than individual birds.
(C)Food supplies are quickly depleted
(D)Some birds in the group will attack the others.
參考答案
答案：B
難度：非常簡單1
統計：A(0),B(3),C(0),D(0),E(0)
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