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[Issue Essay]

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题目:

Analytical!

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Years before the advent of plate tectonics―the widely accepted theory, developed in the mid-1960's, the holds that the major features of Earth's surface are created by the horizontal motions of Earth's outer shell, or lithosphere―a similar theory was rejected by the geological community. In 1912, Alfred Wegener proposed, in a widely debated theory that came to be called continental drift, that Earth's continents were mobile. To most geologists today, Wegener's The origin of Continents and Oceans appears an impressive and prescient document, containing several of the essential presumptions underlying plate tectonics theory: the horizontal mobility of pieces of Earth's crust; the essential difference between oceanic and continental crust; and a causal connection between horizontal displacements and the formation of mountain chains. Yet despite the considerable overlap between Wegener's concepts and the later widely embraced plate tectonics theory, and despite the fact that continental drift theory presented a possible solution to the problem of the origin of mountains at a time when existing explanations were seriously in doubt, in its day Wegener's theory was rejected by the vast majority of geologists. Most geologists and many historians today believe that Wegener's theory was rejected because of its lack of an adequate mechanical basis. Stephen Jay Gould, for example, argues that continental drift theory was rejected because it did not explain how continents could move through an apparently solid oceanic floor. However, as Anthony Hallam has pointed out, many scientific phenomena, such as the ice ages, have been accepted before they could be fully explained. The most likely cause for the rejection of continental drift―a cause that has been largely ignored because we consider Wegener's theory to have been validated by the theory of plate tectonics―is the nature of the evidence that was put forward to support it. Most of Wegener's evidence consisted of homologies―similarities of patterns and forms based on direct observations of rocks in the field, supported by the use of hammers, hand lenses, and field notebooks. In contrast, the data supporting plate tectonics were impressively geophysical―instrumental determinations of the physical properties of Earth garnered through the use of seismographs, magnetometers, and computers. 我选了E considerable overlap前面是despite XXX说明这个是个成就,他和后面的反对W的观点的事情是相反的。所以感觉D说用这个词的目的是解释为啥W理论。请老师辨析DE!谢谢!

解答:

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解答: 张慧雯

提问:

老师这道题是选a吗?我在A和E之间犹豫很久,可以讲下这道题做题思路吗

解答:

点赞0
阅读458650
解答: 英吉老师

提问:

请问老师这道题应该选什么啊?可以解释下吗?特别是考场上怎么做啊 我在AC上徘徊很久

解答:

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解答: 英吉老师

提问:

老师提问这一题

解答:

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解答: 徐小梅老师

提问:

老师这道题我选的A,条件一为什么不充分?

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解答: 徐小梅老师

提问:

请王文静老师解答。确实做题不知道怎么下手。划线前面讲的是自画像问题,and后面感觉也要讲自画像才能并列,排除了bcd在AE中选。我就回去看句间关系,One reason..For one thing..Also.感觉AIso后面是承接For one thing讲署名问题选E

解答:

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阅读511632
解答: 王文静老师

提问:

老师这道题如果比较前后时态不一致东西可以省略么?如果不考虑过去完成时的错误?我错选了d

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解答: 金栩竹老师

提问:

提问解题思路

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解答: 徐小梅老师

提问:

提问解题思路

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阅读445853
解答: 徐小梅老师

提问:

提问老师,第一句的意思

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阅读381432
解答: 徐小梅老师

提问:

请问老师解题思路

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阅读379086
解答: 徐小梅老师

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