阿摩線上測驗
28 Petroleum production can contribute to air and water pollution; besides, drilling for ___ may disturb the fragile
ecosystems.
(A) oil
(B) light
(C) air
(D) truth
答案：登入後查看
統計： A(24), B(10), C(5), D(1), E(0) #1223450
統計： A(24), B(10), C(5), D(1), E(0) #1223450
