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  3. What does the second paragraph mainly discuss? Why does the author mention the Virgo galaxy and the Andromeda galaxy in the thi

What does the second paragraph mainly discuss? Why does the author mention the Virgo galaxy and the Andromeda galaxy in the thi

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问题 What does the second paragraph mainly discuss?
Why does the author mention the Virgo galaxy and the Andromeda galaxy in the third paragraph?
选项 A、To describe the effect that distance has no visibility.
B、To compare the ages of two relatively young galaxies.
C、To emphasize the vast distances of the galaxies from Earth.
D、To explain why certain galaxies cannot be seen by a telescope.
答案C
解析
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