885 Section 14 #10 （补充202）

missouyang

The development of a new jumbo rocket that is expected to carry the United States into its next phase of space exploration will be able to deliver a heavier load of instruments into orbit than the space shuttle and at a lower cost.
(A) The development of a new jumbo rocket that is expected to carry the United States into its next phase of space exploration will be able to deliver a heavier load of instruments into orbit than the space shuttle and at a lower cost.
(B) The development of a new jumbo rocket is expected to carry the United States into its next phase of space exploration and be able to deliver a heavier load of instruments into orbit at a lower cost than the space shuttle.
(C) The new development of a jumbo rocket, which is expected to carry the United States into its next phase of space exploration, will be able to deliver a heavier load of instruments into orbit at a lower cost than the space shuttle.
(D) A newly developed jumbo rocket, which is expected to carry the United States into its next phase of space exploration, will be able to deliver a heavier load of instruments into orbit than the space shuttle can, and at a lower cost.
(E) A newly developed jumbo rocket, which is expected to carry the United States into its next phase of space exploration, will be able to deliver a heavier load of instruments into orbit than the space shuttle and to cost less.

答案选D,可是他补出的是can，而前文是will be able to，请问这样也可以么？

谢谢

dingzhiyin19

我认为补出can是对的，请注意比较范围 1)只比较主语 2)比较句子。此题应为2),是将要发射的rocke和现有shuttle(不准备发射)的能力比较，不是将要发射的rocket和将要发射的shuttle的比较。

rosemarys

我个人觉得这不是一种好的替换方式，因为毕竟be able to和CAN有意思上的差别。但是，矮子里的将军，只有D是属于Orange&Apple的比较结构。