問題詳情

22. ________ no specific treatment of Ebola virus infection, and the fatality rate can be up to 90%.
(A) It is
(B) It has
(C) That is
(D) There is

參考答案

答案:D
難度:簡單0.733083
統計:A(81),B(41),C(20),D(390),E(0)

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