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[Issue Essay]

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题目:

Analytical!

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答案:

提问:

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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阅读269806
解答: 张慧雯

提问:

不知道自己判断标准是否对 前三相似,对比前三,按逻辑rules只能被intend,with intent、intending是主动,(实际做时,B我不知with intent是主动,我根据后面不是从句而是短语所以判断不如A);对比DE,D我觉得should不好,E的this指代不清。

解答:

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阅读255913
解答: 郭培月老师

提问:

DE读起来可以选对是E,但说不出为啥。

解答:

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阅读255488
解答: 郭培月老师

提问:

原文不长,读一下意思,看到than肯定要和前面并列形式一致,认为individuals是说某个物种,于是后面应该是别的物种。(按正确答案来,individuals应该是指基因的某几个组成部分???)

解答:

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阅读254092
解答: 郭培月老师

提问:

请问老师,这题选C???不是用答案带入直接选出B吗?17og的数学题,麻烦啦

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阅读253574
解答: 姜山老师

提问:


解答:

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解答: 徐小梅老师

提问:

请问这个第一句怎么翻译,what是引导的什么从句?

解答:

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阅读253771
解答: 金栩竹老师

提问:

Paleontologist Stephen Jay Gould has argued that many biological traits are not the products of natural selection, favored due to their enhancement of reproduction or survival, but that they are simply random by-products of other evolutionary developments. (A) due to their enhancement of reproduction or survival, but that they are (B) due to the reproduction or survival they enhance, but they are (C) because they enhance reproduction or survival, but (D) because they enhance reproduction or survival, but are (E) because of enhancing reproduction or survival, but are

解答:

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解答: 王文静老师

提问:

数学,余数问题如何求通项公式?

解答:

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阅读253308
解答: 姜山老师

提问:

for example、such as、include、contain、like的区别

解答:

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阅读253497
解答: 英吉老师

提问:


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阅读255347
解答: 金栩竹老师

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