GRE考试

【单选题】 It can be inferred from the passage that evidence for continental drift has been provided by the
A．(A) correspondences between coastal contours
B．(B) proof of an original solitary land mass
C．(C) level of sima underlying the continents
D．(D) immobility of the African continent
E．(E) relative heaviness of the continental masses

网考网参考答案：A
网考网解析：
Since the existence of the correspondences between the various coastal contours was used by Wegener as a basis for formulating his theory of continental drift, it can be inferred that the correspondences provide evidence for the theory. Choice B is incorrect. The passage does not indicate that Pangea's existence has been proved. Choice C is incorrect. It is the relative heaviness of sima, not the level or depth of sima, that suggested the possibility of the lighter continents drifting. Choice D is incorrect. Mobility rather than immobility would provide evidence for continental drift. Choice E is incorrect. The continents are lighter than the underlying sima. 查看试题解析出处>>