GRE考试

【单选题】 The primary purpose of the passage is to
A．(A) describe the relative speed of continental movement
B．(B) predict the future configuration of the continents
C．(C) refute a radical theory postulating continental movement
D．(D) describe the reasoning behind a geological theory
E．(E) explain how to calculate the continental drift per year

网考网参考答案：D
网考网解析：
The author takes the reader through Wegener's reasoning step by step, describing what led Wegener to reach his conclusions. 查看试题解析出处>>