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
詳解 (共 2 筆)
未解鎖
此衛星的目標(目的)是為了找出空氣汙染源...
未解鎖
carbon monoxide 一氧化碳...
阿摩線上測驗
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