9 The major culprits from transportation sources are carbon monoxide (CO), nitrogen oxides (NO and NOx), volatile organic compounds, sulfur dioxide, and hydrocarbons. These molecules react with sunlight, heat, ammonia, moisture, and other compounds to form the noxious vapors, ground level ozone, and particles that comprise ______.
(A) population
(B) smog
(C) toxicities
(D) malaria

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統計: A(12), B(41), C(15), D(4), E(0) #1543274

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#2905667
smog同義字 KK[smɑg] DJ[...
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#3706099
來自運輸來源的主要罪魁禍首是一氧化碳(C...
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