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  3. What is the most important factor for a rocket to escape from the Earth? ______ As there is always the Earth’s gravitational pu

What is the most important factor for a rocket to escape from the Earth? ______ As there is always the Earth’s gravitational pu

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问题 What is the most important factor for a rocket to escape from the Earth? ______
As there is always the Earth’s gravitational pull, people ______.
选项 A、accept it without questioning it
B、never notice its presence
C、hardly think about how to use it
D、often try to escape from it
答案A
解析 从文章的第一段第三句“地心引力一直和我们生活在一起，我们把它看作理所当然的，并且几乎不考虑它”，可以判断出本题的答案是A。
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