問題詳情
【題組】49. President Obama left Copenhagen because ____.
(A) the deal had not been approved yet
(B) the agreement needed to be ratified
(C) the agreement was not a legally binding treaty
(D) there was a storm in the U.S
參考答案
答案：D
難度：適中0.678082
統計：A(10),B(7),C(28),D(99),E(0)
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