試卷：無年度 - 2002年10月托福閱讀#20901
| 科目：TOEFL(Test of English as a Foreign Language)托福
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試卷名稱：無年度 - 2002年10月托福閱讀#20901
科目：TOEFL(Test of English as a Foreign Language)托福
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
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