問題詳情

6. Bird flu, a viral disease of birds, does not usually ______ humans; however,some viruses, such as H5N1 and H7N9, have caused serious diseases in people.
(A) infect
(B) inform
(C) illustrate
(D) inflate

參考答案

答案:A
難度:適中0.623554
統計:A(593),B(133),C(124),D(101),E(0)

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