[讨论]OG11th-103

ajjghawx

为什么就没人解答了呢？同样有疑问！

snowmary

我想问的是为什么be able to可以和can平行？

yichousun

回答楼上的。是的。

证据：就在E选项的解释里。verb can is needed after space shuttle to creat a correct comparison。

为什么不用do呢？当然是错误的。

MM就当公式记忆了吧。

snowmary

好吧……也只能这样了

多谢！

elizabeth_xu

同问！

为什么 to cost less 不能和 to deliver 对应呢？语义和逻辑上也读得通的呀？

nn指教

yexiang2007

应该选D，这句话得通过理解句子意思，到底是development还是new jumbo rocket be able to deliver a heavier load of instruments into orbit,当然是火箭了，所以A，B，C错。至于D和E，要看比较对象是否对等，D中在than的后面补出了can，使句意更明确。不是火箭和space shuttle比较，而是他们装载量的能力的比较。所以选D

minirainbow

OG 11^th的官方解释

The challenge here is to revise the sentence and present a complex idea as simply as possible.What will deliver the instruments in to orbit? They will be delivered not by the development of a rocket but rather by the rocket itself; the jumbo rocket, not its development, must be the subject of the sentence. The phrase a heavier load of instruments than the space shuttle suggests a comparison between the load of instruments and the shuttle, whereas it is actually the different capabilities of the rocket and the shuttle that are being compared. The comparison should be written: the jumbo rocket will be able to deliver a heavier load…than the space shuttle can. That is used to introduce restrictive clauses; such clauses are essential to the meaning of a sentence. The that is expected…exploration clause is not essential; it should be introduced by which and set off with commas.

rorarora

我的理解是，行文重点是deliver a heavier load, cost less 是附带的信息，如果用动词的话，显得有些头重脚轻，所以还是用省略了的at a lower cost 比较好。

sookai

这个题目最让我痛苦的是 and at a lower cost前面有一个逗号。这个逗号可以不要，是不是更整齐？

nedelon

问题 ： and at a lower cost.. 省略了什么？不太明白这个短语放在这里的作用，因为前面是比较，这个感觉比较的双方都省略了。。请教了

另外对于can的补出是必须的，比较前主谓宾，比较后，只一名词，加谓体现是主语。。can 是 be able to 的对应。