PASSAGE TWO What is the main idea of Para. 4?

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问题 PASSAGE TWO
What is the main idea of Para. 4?

选项

答案Formaldehyde’s pervasiveness and solutions to this problem.

解析 第4段的内容包含两个方面:前两句举例简要说明甲醛在日常生活中无处不在(It’s everywhere),后几句是专家给消费者的建议,告诉人们如何尽量减少和甲醛的接触。概括上述两个方面,可知本题答案为Formaldehyde’s pervasiveness and solutions to this problem。
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