阿摩線上測驗
18. The satellite’s purpose is to find sources of air pollutants,
including exhaust gas, carbon dioxide and carbon monoxide
_____ from factories.
(A) emit
(B) emits
(C) emitted
(D) emitting
答案：登入後查看
統計： A(22), B(26), C(224), D(70), E(0) #606357
統計： A(22), B(26), C(224), D(70), E(0) #606357
