問題詳情

52. During the 2009-10 flu season, H1N1 caused the _________ infection in humans that wascommonly referred to as swine flu.
(A) sustainable
(B) recreational
(C) respiratory
(D) restaurant

參考答案

答案：[無官方正解]
難度：計算中-1
書單：沒有書單，新增