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.
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 E,they appear to us as though in
the Key is A. 为什么D不行。OG解释是D ambiguously suggests that the quasars appeared to us in the formation of the universe,that is, as though we were present to view them then.这句没看懂什么意思。那位cder可以解释一下吗。先谢了。