73. Which of the following is NOT mentioned as a cause of pollution?
(A) burning of fuels for energy
(B) the release of noxious gases
(C) smoking and cooking
(D) using of electronic devices
詳解 (共 2 筆)
未解鎖
There are several ma...
未解鎖
noxious 有毒、有害的 The...
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