問題詳情
【題組】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
參考答案
答案：[無官方正解]
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)