求助GWD2

415lethe

原文相关段落：
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 for- mations in the deepest parts of the mantle; the largest of these is a buoyant mass of hot rock directly below Africa's southern tip. Dispelling 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.


问题：
According to the passage, the computer models(highlight text) referred to have had which of the following effects?
A.They have confirmed researchers' doubts regarding the theory that convection within the mantle can lift or lower Earth's surface vertically.
B.They have cast doubt on the validity of plate-tectonics theory as an explanation for the sculpting of Earth's mountain ranges.
C.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.
D.They have convinced formerly skeptical researchers that rock formations deep in Earth's mantle below southern Africa could have created the superswell.
E.They have confirmed researchers' speculation that masses of hot rock are buoyant enough to rise to the upper part of Earth's mantle.




KEY：D
想请教下为什么E不对？

Fiona09

艾玛，好些个生词啊。。。最惧碰到这种科考性的文章了 让人挠墙。。。

文章大概解释了地幔，岩石热、密度小时会上升，岩石冷、密度小时会下降，说明对流主要作用于水平方向，最近地球物理学家怀疑其是否可以作用于垂直方向。 又讲到现在科技发达可以探测震波、时间、速度等因素，以此可以推测出各个部分内部的温度和密度。最后说，现在科技探测到南非的板块下有大量活跃的热岩石，活跃的程度可以使非洲陆地上升。

只能说D最贴近文章里说的这些信息，E中说证实了有关masses of hot rock are buoyant enough to rise to the upper part of Earth's mantle的推测，也可以看到文中最后一句Dispelling researchers' initial doubts，只是这两个不是一回事，initial doubts是the ability to lift or lower the planet's surface vertically。所以不能选...