阿摩線上測驗
9. Environmental __________ is a major world problem. We need to know what causes
it and what we can do to prevent it.
(A) battery farming
(B) degradation
(C) conservation program
(D) species
(E) eutrophication
答案：登入後查看
統計： A(0), B(1), C(0), D(0), E(2) #3097625
統計： A(0), B(1), C(0), D(0), E(2) #3097625
