37. What is the main idea of the passage?
(A) causes and impacts of particulates
(B) methods of improving air quality
(C) geographical areas affected by particulates
(D) composition analysis of particulates

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統計： A(436), B(13), C(16), D(14), E(0) #940802

詳解 (共 2 筆)

#2821005
(A)causes and impact...
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#4989605

第一段寫汙染的來源，第二段寫對人體的影響，第三段寫對植物的影響，綜合以上，選(A)

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