問題詳情
48. The word "They" in line 24 refers to
(A) pheromones
(B) roles
(C) activities
(D) insects
(A) pheromones
(B) roles
(C) activities
(D) insects
參考答案
答案：A
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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