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[Reading Comprehension]
试题详情
文章：
| Line | Io and Europa, the inner two of Jupiter’s four |
| largest moons, are about the size of Earth’s moon | |
| and are composed mostly or entirely of rock and | |
| metal. Ganymede and Callisto are larger and roughly | |
| (5) | half ice. Thus, these four moons are somewhat |
| analogous to the planets of the solar system, in which | |
| the rock- and metal-rich inner planets are distinct | |
| from the much larger gas- and ice-rich outer planets. | |
| Jupiter’s moons are, however, more “systematic”: | |
| (10) | many of their properties vary continuously with |
| distance from Jupiter. For example, Io is ice-free, | |
| Europa has a surface shell of ice, and while | |
| Ganymede and Callisto are both ice-rich, outermost | |
| Callisto has more. | |
| (15) | This compositional gradient has geological |
| parallels. Io is extremely geologically active, Europa | |
| seems to be active on a more modest scale, and | |
| Ganymede has undergone bouts of activity in its | |
| geological past. Only Callisto reveals no geological | |
| (20) | activity. In similar fashion, Callisto’s surface is very |
| heavily cratered from the impact of comets and | |
| asteroids; Ganymede, like Earth’s moon, is heavily | |
| cratered in parts; Europa is very lightly cratered; and | |
| no craters have been detected on Io, even though | |
| (25) | Jupiter’s gravity attracts comets and asteroids |
| passing near it, substantially increasing the | |
| bombardment rate of the inner moons compared | |
| to that of the outer ones. But because of Io’s high | |
| degree of geological activity, its surface undergoes | |
| (30) | more-or-less continuous volcanic resurfacing. |
题目：
According to the passage, the difference in the amount of cratering on Callisto’s and Io’s respective surfaces can probably be explained by the difference between these two moons with respect to which of the following factors?
选项:
A、Size
B、Ice content
C、The rate of bombardment by comets and asteroids
D、The influence of Jupiter’s other moons
E、The level of geological activity
答案:
E
提问：
请问，文章逻辑框架我都清楚可是我还是把题目做错了。问造成两个moon上crater数量不同是由什么导致的。直接定位第二段，第二段再讲两个不同的地理特征，第一个活动不同。第二个是crater的不同。因为是两个不同的特点，我就觉得导致这个差异的原因应该往后读，就定位到了25行，选出了c。 看答案选的是E，不懂为什么选E，是我句间关系读错了吗。 希望老师帮忙解答下！！！
解答：
点赞0
阅读2015
提问：
请问，文章逻辑框架我都清楚可是我还是把题目做错了。问造成两个moon上crater数量不同是由什么导致的。直接定位第二段，第二段再讲两个不同的地理特征，第一个活动不同。第二个是crater的不同。因为是两个不同的特点，我就觉得导致这个差异的原因应该往后读，就定位到了25行，选出了c。 看答案选的是E，不懂为什么选E，是我句间关系读错了吗。 希望老师帮忙解答下！！！
解答：
点赞0
阅读2016
提问：
麻烦老师按观点\why\what分析一下文章构架，即拿到文章的第一步
解答：
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阅读2024
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