Unlike the short flights of the shuttle and earlier spacecraft, which carried sufficient power in fuel cells and batteries, a permanently orbiting space station will have to generate its own electricity.
A. the short flights of the shuttle and earlier spacecraft, which carried sufficient power in fuel cells and batteries B. the shuttle and earlier spacecraft, with sufficient enough power in fuel cells and batteries for their short flights C. the short flights of the shuttle and earlier spacecraft, which enabled them to carry sufficient enough power in fuel cells and batteries D. the shuttle and earlier spacecraft, which were capable of carrying sufficient power in fuel cells and batteries for their short flights E. the flights of the shuttle and earlier spacecraft, whose shortness allowed them to carry sufficient power in fuel cells and batteries 老讨论贴中争执于B和D,说B中的with修饰有歧义,这点其实我还是不太确定,有NN指点一下吗? 另外,D中,为什么会用过去式were,而未划线部分是will? thx~ |