阿摩線上測驗
9. Secondhand smoke _____ contributes to over 40,000 deaths among nonsmoking adults and 400 deaths in infants each year.
(A)donation
(B)exposure
(C)implementation
(D)presentation
答案：登入後查看
統計： A(5), B(55), C(18), D(4), E(0) #3867811
統計： A(5), B(55), C(18), D(4), E(0) #3867811
