問題詳情

1. Whales make the longest ______ known among mammals. Gray whales can swim thousands of milesfor the summer.
(A) expatriation
(B) immigrations
(C) integration
(D) migrations

參考答案

答案:D
難度:簡單0.75
統計:A(1),B(0),C(2),D(9),E(0)

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