题库 Science 题目列表 The city of Los Angeles is famous for its hazy “sm...
Single Choice
The city of Los Angeles is famous for its hazy “smoggy” days. Which of the following pollutants is a major contributor to smog?
A.

Carbon dioxide

B.

CFCs

C.

Ozone

D.

Chloromethane [klohr-uh-METH-ayn]

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Normal MiddleSchool
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