为什么我的大全7-13的题目和楼主的不一样呢? 而我恰好对该题又有疑问,请NN们帮我解答一下,万分感谢。 13. In astronomy the term “red shift” denotes the extent to which light from a distant galaxy has been shifted toward the red, or long-wave, end of the light spectrum by the rapid motion of the galaxy away from the Earth. (A) to which light from a distant galaxy has been shifted (B) to which light from a distant galaxy has shifted (C) that light from a distant galaxy has been shifted (D) of light from a distant galaxy shifting(A) (E) of the shift of light from a distant galaxy 我选了B,为什么要用被动时态呢? |