問題詳情
62 The unusually noxious _____ in Peijing was caused by several factors, including industrial pollution andauto emission trapped by cold and windless weather.
(A) haze
(B) steam
(C) vapour
(D) storm
參考答案
答案：A
難度：適中0.473684
統計：A(9),B(2),C(4),D(4),E(0)