阿摩線上測驗
7. Certain chemicals have been _____ because of their damaging effect on the environment.
(A) permitted
(B) adopted
(C) encouraged
(D) banned
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統計： A(0), B(0), C(0), D(12), E(0) #3578076
統計： A(0), B(0), C(0), D(12), E(0) #3578076
