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GRE阅读题目解析:枕状熔岩

2017-05-10 09:10:00来源：新东方在线整理

　　【GRE阅读题目解析:枕状熔岩】GRE考试考什么？GRE阅读是重点。新东方在线GRE频道为大家带来GRE阅读题目解析:枕状熔岩，答案见下一页，希望对大家GRE备考有所帮助。更多精彩尽请关注新东方在线GRE频道!

　　查看全部：GRE阅读答案解析(汇总)

　　GRE阅读题目解析:枕状熔岩

　　P1

　　Volcanic rock that forms as fluid lava chills rapidly is called pillow lava. This rapid chilling occurs when lava erupts directly into water (or beneath ice) or when it flows across a shoreline and into a body of water. While the term "pillow lava" suggests a definite shape, in fact geologists disagree. Some geologists argue that pillow lava is characterized by discrete, ellipsoidal masses. Others describe pillow lava as a tangled mass of cylindrical, interconnected flow lobes. Much of this controversy probably results from unwarranted extrapolations of the original configuration of pillow flows from two-dimensional cross sections of eroded pillows in land outcroppings. Virtually any cross section cut through a tangled mass of interconnected flow lobes would give the appearance of a pile of discrete ellipsoidal masses. Adequate three-dimensional images of intact pillows are essential for defining the true geometry of pillowed flows and thus ascertaining their mode of origin. Indeed, the term “pillow,” itself suggestive of discrete masses, is probably a misnomer. (165 words)

　　1. In the passage, the author is primarily interested in

　　(A) analyzing the source of a scientific controversy

　　(B) criticizing some geologists‘ methodology

　　(C) pointing out the flaws in a geological study

　　(D) proposing a new theory to explain existing scientific evidence

　　(E) describing a physical phenomenon

　　For the following question, consider each of the choices separately and select all that apply

　　2. The author of the passage would most probably agree that the geologists mentioned in the fourth sentence have made which of the following errors in reasoning?

　　□A Generalized unjustifiably from available evidence.

　　□B Deliberately ignored existing counterevidence.

　　□C Repeatedly failed to take new evidence into account.

　　3. The author implies that the “controversy” might be resolved if

　　(A) geologists did not persist in using the term “pillow”

　　(B) geologists did not rely on potentially misleading information

　　(C) geologists were more willing to confer directly with one another

　　(D) two-dimensional cross sections of eroded pillows were available

　　(E) existing pillows in land outcroppings were not so badly eroded

　　点击下一页查看答案：

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