問題詳情

15.The conditions which gave rise to the epidemic included the poor ________ and a lack of safe water sources in the region.
(A)session
(B)sanitation
(C)prescription
(D)dedication

參考答案

答案:B
難度:適中0.53406
統計:A(56),B(196),C(45),D(24),E(0)

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