题目内容
（请给出正确答案）
提问人：网友13***556
发布时间：2022年4月22日 23:08
[填空题]
1.
Read the text again and then complete the missing parts of the text outline.
I. An introduction to PC pollution (Paras 1-2)
A. What is PC pollution (Para 1)
B. Theof PC pollution (Para 2)
II. What to PC pollution (Para 3)
III. to solve PC pollution (Paras 4-10)
A. How people solved it in the past (Para 4)
B. How solve it (Paras 5-6)
C. Laws being passed to guarantee to solve the pollution problem (Paras 7-8)
D. Actions being taken by some (Paras 9-10)
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