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Millions of stars are traveling about in space. A few form groups which journey together, but most of them travel alone. And th
Millions of stars are traveling about in space. A few form groups which journey together, but most of them travel alone. And th
admin
2011-05-26
36
问题
Millions of stars are traveling about in space. A few form groups which journey together, but most of them travel alone. And they travel through a universe so large that one star seldom comes near to another.
We believe, however, that some two thousand million years ago, another star wandering through space, happened to come near our sun. Just as the sun and the moon raise tides on the earth, so this star must have raised tides on the surface of the sun. But they were very different from the small tides that are raised in our oceans; a large tidal wave’ must have travelled over the surface of the sun, at last forming a mountain so high that we cannot imagine it. As the cause of the disturbance (动荡) came nearer, so the mountain rose higher and higher. And before the star began to move away again, its tidal pull had become so powerful that this mountain was torn to pieces and threw off small parts of itself into space. These small pieces have been going round the sun ever since. They are the planets (行星).
In this article, the writer mainly wants to tell the readers______.
选项
A、that the universe is so large that we cannot imagine it
B、where the planets in the universe came from
C、how the high mountains were formed on the sun
D、why the tides over the surface of the sun were so powerful
答案
B
解析
从全文整体来看,主要讲述的是行星的形成过程,因此选B。
转载请注明原文地址:https://jikaoti.com/ti/XU4GFFFM
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