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.

B)we see them as they had been during

C)we see them as if during

D)they appear to us as they did in

E)they appear to us as though in

during the formation of the universe怎么理解?为什么D不可以呢?

這是故意搞外國學生的題目

E一定錯，不理他，至於標準答案A

就是說我們"現在"看到的這顆星(Quasars)，就像是他"當時"形成時的樣子

一顆星形成的各種樣子，透過光線傳到地球，己經是幾十萬甚至幾億年之後，用A的寫法最能滿足