問題詳情
【題組】49. According to the passage, the Carboniferous period was characterized by
(A) a reduction in the number of coal deposits
(B) the burning of a large amount of coal
(C) an abundance of plants
(D) an accelerated rate of glacier formation
參考答案
答案：C
難度：適中0.666667
統計：A(0),B(0),C(2),D(1),E(0)