問題詳情

46. Which of the following statements is true about West Nile?
(A) Its symptoms usually appear within two weeks.
(B) It is spread through air and water in tropical areas.
(C) Over 20% of people who contract it will suffer severe symptoms.
(D) It comes from direct human contact with birds infected with the virus.

參考答案

答案：A
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)

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