阿摩線上測驗
9. People who are _______ to the flu are strongly advised to get vaccine, since this can help them build up their immunity.
(A) delicate
(B) feeble
(C) fragile
(D) vulnerable
答案：登入後查看
統計： A(24), B(12), C(24), D(65), E(0) #2689175
統計： A(24), B(12), C(24), D(65), E(0) #2689175
