The passage implies which of the following about the five asteroids mentioned in the highlighted text?
Their rotation rates are approximately the same.
They have undergone approximately the same number of collisions.
They are monoliths.
They are composed of fragments that have escaped the gravity of larger asteroids.
They were detected only recently.
文章大意:
1. 现象:小行星相撞
结果:
如果行星是M——旋转速度就会呈现一个铃铛状(或快或慢)
如果是rubber piles——转得快的就跑了(没有快的部分)
除了五个行星(直径比200米小),其他都遵循这个规律
2. 比200米大的行星是rubber pile,这个结论是对的。因为大的行星被撞后成了碎片,这些碎片的移动速度比逃跑速度小,所以几个小时后,这些速度慢的会聚在一起,速度快的就跑了。
题目分析:
文章细节题:高亮的的五个行星?
选项分析:
A选项:他们的旋转速度一样:没提。
B选项:他们遭受了同样数量的撞击:没提。
C选项:正确。他们都是M:文章最后一句说,大部分小行星是M。
D选项:他们由碎片组成,那些碎片是从大行星上逃跑的:这五个行星是M,也就是single rocks,并不是大行星的碎片。
E选项:他们只在最近被发现:没提。
The passage 【implies】 which of the following about the five asteroids mentioned in the highlighted text? (imply意味着未必在原文有明确的表述但肯定是原文内容强烈暗示可推测出来的!)
C选项:They are monoliths 正确。他们都是M:文章最后一句说,[most] small asteroids "should" be monolithic----"暗示"这五个行星是M
D选项:They are 【composed of】fragments that have escaped the gravity of larger asteroids. 他们由碎片组成,那些碎片是从大行星上逃跑的:这五个行星是M,也就是single rocks,并不是大行星的碎片。(原文有 fragments that have escaped the gravity of larger asteroids,但从未说过这五个行星是由这些碎片【组成的】!)
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