問題詳情
【題組】37. Why are zoonotic diseases so deadly to humans?
(A)because they come from animals
(B) because they infect both animals and humans
(C) because our immune systems do not recognize the diseases
(D)because there are only two vaccines against them
參考答案
答案：C
難度：簡單0.8
書單：沒有書單，新增