Quasars are so distant that their light has taken billions of years to reach the Earth ;consequently, we see them as they were during the formation of the universe.
A.we see them as they were during
B.they appear to us as they did in
为什么选A不选B呢?如果B中的as they did 换成as they were的话,对么?
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这道题有么有高手可以指教啊?
谢谢啦!
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