阿摩線上測驗
23. What is the problem with cleaning up rivers and lakes?
(A) It costs lots of money and needs a long time to see results.
(B) It may disturb the animals and hurt the plants in those waters.
(C) Only a few non-government organizations are willing to do it.
(D) Only people living near those rivers and lakes care about it.
答案：登入後查看
統計： A(157), B(19), C(14), D(11), E(0) #2030806
統計： A(157), B(19), C(14), D(11), E(0) #2030806
