問題詳情

49. What may stop the monarch butterflies from starting their return trip?
(A)A drought that happened in the Dakotas and Minnesota.
(B)The hurricanes that soaked the Texas grasslands.
(C) The sufficient nectar-heavy wildflowers.
(D)The shortage of monarch experts.

參考答案

答案:A
難度:適中0.539683
統計:A(34),B(17),C(8),D(2),E(0)

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