请问补充250题46题

smilingsea

46.   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) we see them as they had been during

(C) we see them as if during

(D) they appear to us as they did in（A）

(E) they appear to us as though in

虽然听了白大侠的讲解，可是还是不太明白。as 在这里做什么成分呢？为何不用as if呢？

怎么翻译画线部分呢？

bow

rt316

as = while

smilingsea

while?表示when?这个句子是什么意思呢？麻烦大侠再解释一下。

mbl_729

as当就象,正如讲.