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考研
The author believes that ______. The hot spot theory may’ prove useful in explaining ______.
The author believes that ______. The hot spot theory may’ prove useful in explaining ______.
admin
2008-12-26
98
问题
The author believes that ______.
The hot spot theory may’ prove useful in explaining ______.
选项
A、the structure of the African plates
B、the revival of dead volcanoes
C、the mobility of the continents
D、the formation of new oceans
答案
D
解析
作者在短文最后一段说:"热点"理论的意义不只局限于它们所起的参照体系的作用,现在看来,热点还对推动板块在地球表面漂移这一地质过程产生重要影响。当大陆板块漂移到热点上方并停留时,从地层深处涌出的物质使板块凸起,形成一个大的圆丘。圆丘不断增大,并出现许多深深的裂纹。至少有若干次大陆板块沿其中的一些裂纹完全断开,因此热点推动了新海洋的形成。
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0
考研英语一
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