单选题
The primary purpose of the passage is to
(A) describe the relative speed of continental movement
(B) predict the future configuration of the continents
(C) refute a radical theory postulating continental movement
(D) describe the reasoning behind a geological theory
(E) explain how to calculate the continental drift per year
A
B
C
D
E
【正确答案】
D
【答案解析】
The author takes the reader through Wegener's reasoning step by step, describing what led Wegener to reach his conclusions.
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