阿摩線上測驗
34.What does conservation involve as mentioned in the passage?
(A) Efforts to ignore pollution
(B) Wise use and protection of the environment
(C) Proper planning for cutting down trees
(D) Careful disposal of chemicals into waters
答案：登入後查看
統計： A(0), B(5), C(0), D(1), E(0) #3402848
統計： A(0), B(5), C(0), D(1), E(0) #3402848
