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  3. What are the symptoms of SBS? What is the probable reason that may bring about SBS?

What are the symptoms of SBS? What is the probable reason that may bring about SBS?

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问题 What are the symptoms of SBS?
What is the probable reason that may bring about SBS?
选项 A、SBS is said to be caused by one of two general categories of pollution, given a poorly ventilated, airtight building.
B、The "new smell" of chemical vapors given off by paint, glue and other construction materials.
C、Formaldehyde is one of the many VOCs which also cause SBS.
D、None of the above three.
答案A
解析 可能导致SBS的产生主要原因为文中第二段第一句中“SBS据信由于一到一种污染类别”这是正确的选择。
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