Reading Comprehension

[Reading Comprehension] 试题详情

    Scientists generally credit violent collisions between tectonic plates, the mobile fragments of Earth's rocky outer shell, with sculpting the planet's surface, as, for example, when what is now the Indian subcontinent collided with Asia, producing the Himalayan Mountains. However, plate tectonics cannot fully explain certain massive surface features, such as the "superswell" of southern Africa, a vast plateau over 1,000 miles across and nearly a mile high. Geologic evidence shows that southern African has been slowly rising for the past 100 million years, yet it has not experienced a tectonic collision for nearly 400 million years.The explanation may be in Earth's mantle, the layer of rock underlying the tectonic plates and extending down over 1,800 miles to the outer edge of Earth's iron core.

    Since the early twentieth century, geophysicists have understood that the mantle churns and roils like a thick soup. The relative low density of the hottest rock makes that material buoyant, so it slowly ascends, while cooler, denser rock sinks until heat escaping the molten core warms it enough to make it rise again. While this process of convection was known to enable the horizontal movement of tectonic plates, until recently geophysicists were skeptical of its ability to lift or lower the planet's surface vertically. However, recent technological advances have allowed geophysicists to make three-dimensional "snapshots" of the mantle by measuring vibrations, or seismic waves, set in motion by earthquakes originating in the planet's outer shell and recording the time it takes for them to travel from an earthquake's epicenter to a particular recording station at the surface. Because geophysicists know that seismic waves become sluggish in hot, low-density rock, and speed up in colder, denser regions, they can now infer the temperatures and densities in a given segment of the interior. By compiling a map of seismic velocities from thousands of earthquakes across the globe, they can also begin to map temperatures and densities throughout the mantle. These methods have revealed some unexpectedly immense formations in the deepest parts of the mantle; the largest of these is a buoyant mass of hot rock directly below Africa's southern tip. Dis-pelling researchers' initial doubts, computer models have confirmed that this formation is buoyant enough to rise slowly within the mantle and strong enough to push Africa upward as it rises.
According to the passage, the computer models referred to in the highlighted text have had which of the following effects?

Options:

They have confirmed researchers' doubts regarding the theory that convection within the mantle can lift or lower Earth's surface vertically.
They have cast doubt on the validity of plate-tectonics theory as an explanation for the sculpting of Earth's mountain ranges.
They have proved geophysicists' theory that the behavior of seismic waves in Earth's mantle is related to the temperature of the rock through which they are traveling.
They have convinced formerly skeptical researchers that rock formations deep in Earth's mantle below southern Africa could have created the superswell.
They have confirmed researchers' speculation that masses of hot rock are buoyant enough to rise to the upper part of Earth's mantle.

Correct:

D

Reading Comprehension

2评分
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[点此查看答疑][GWD]Reading Comprehension

请教Tina老师,这道题我在DE犹豫中选的E。题目分析如下:根据逻辑定位,models有啥效果,我先看了computer出现前的一个困惑,然后再反着想,说明电脑解决了啥。但是我读电脑的上一句感觉像是D,但是其中如create superswell不敢苟同(因为文章跳读的,对superswell印象不是太深),然后我又读了电脑后面的一句话,发现它confirm的内容正好与E吻合,因此不知E咋错了,请老师解答,谢谢!
0评分
78浏览

[点此查看答疑][GWD]Reading Comprehension

请问D选项的定位在哪里
0评分
72浏览

[点此查看答疑][GWD]Reading Comprehension

一看就发晕,不是很看的懂。 读不出来答案要选D
-1评分
72浏览

[点此查看答疑][GWD]Reading Comprehension

E不是跟原句一个意思嘛
0评分
60浏览

[点此查看答疑][GWD]Reading Comprehension

根据最后一句DISPELL DOUDT, 定位到了第二段的 While this process of convection was known to enable the horizontal movement of tectonic plates, until recently geophysicists were skeptical of its ability to lift or lower the planet's surface vertically. 这有那个SKETICAL.如何排除?
0评分
60浏览

[点此查看答疑][GWD]Reading Comprehension

定位到最后一句,错选了E
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57浏览

[点此查看答疑][GWD]Reading Comprehension

96. (29707-!-item-!-188;#058&003977) In some species of cricket, the number of chirps per minute used by the male for attracting females rise and fall in accordance with the surrounding temperature, and they can in fact serve as an approximate thermometer. (A) for attracting females rise and fall in accordance with the surrounding temperature, and they can in fact serve (B) for attracting females rises and falls in accordance with the surrounding temperature, which can in fact serve (C) in attracting females rise and fall in accordance with the surrounding temperature, in fact possibly serving (D) to attract females rises and falls in accordance with the surrounding temperature, and it can in fact serve (E) to attract females rises and falls in accordance with the surrounding temperature, in fact possibly serving
2评分
226浏览

[点此查看答疑][GWD]Reading Comprehension

请教Tina老师,这道题我在DE犹豫中选的E。题目分析如下:根据逻辑定位,models有啥效果,我先看了computer出现前的一个困惑,然后再反着想,说明电脑解决了啥。但是我读电脑的上一句感觉像是D,但是其中如create superswell不敢苟同(因为文章跳读的,对superswell印象不是太深),然后我又读了电脑后面的一句话,发现它confirm的内容正好与E吻合,因此不知E咋错了,请老师解答,谢谢!
0评分
78浏览

[点此查看答疑][GWD]Reading Comprehension

请问D选项的定位在哪里
0评分
72浏览

[点此查看答疑][GWD]Reading Comprehension

一看就发晕,不是很看的懂。 读不出来答案要选D
-1评分
72浏览

[点此查看答疑][GWD]Reading Comprehension

E不是跟原句一个意思嘛
0评分
60浏览

[点此查看答疑][GWD]Reading Comprehension

根据最后一句DISPELL DOUDT, 定位到了第二段的 While this process of convection was known to enable the horizontal movement of tectonic plates, until recently geophysicists were skeptical of its ability to lift or lower the planet's surface vertically. 这有那个SKETICAL.如何排除?
0评分
60浏览

[点此查看答疑][GWD]Reading Comprehension

定位到最后一句,错选了E
0评分
57浏览

[点此查看答疑][GWD]Reading Comprehension

96. (29707-!-item-!-188;#058&003977) In some species of cricket, the number of chirps per minute used by the male for attracting females rise and fall in accordance with the surrounding temperature, and they can in fact serve as an approximate thermometer. (A) for attracting females rise and fall in accordance with the surrounding temperature, and they can in fact serve (B) for attracting females rises and falls in accordance with the surrounding temperature, which can in fact serve (C) in attracting females rise and fall in accordance with the surrounding temperature, in fact possibly serving (D) to attract females rises and falls in accordance with the surrounding temperature, and it can in fact serve (E) to attract females rises and falls in accordance with the surrounding temperature, in fact possibly serving

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