OG11-18,新问题18. Computers are becoming faster, more powerful, and more reliable, and so too are modems, they are the devices to allow two or more computers to share information over regular telephone lines. (A) so too are modems, they are the devices to allow (B) so too are modems, the devices that allow (C) so too modems, the devices allowing (D) also modems, they are the devices that allow (E) also modems, which are the devices to allow 答案是B,OG上说:either the devices that allow or the devices allowing would be correct。我的问题是,既然C\D选项后半句是等同的,后半句的are为何不能省略掉呢。因为and连接前后两个句子结构相同,本人认为be动词可以省略,所以C也对。请NN指教,谢谢!
[此贴子已经被作者于2008-5-15 14:06:51编辑过] |