阿摩線上測驗
9. Air, water, and food are considered ______ to human life.
(A)indistinguishable
(B) illegitimate
(C) illegible
(D)indispensable
答案：登入後查看
統計： A(13), B(7), C(11), D(82), E(0) #934317
統計： A(13), B(7), C(11), D(82), E(0) #934317
