885 sec-14-18 的新问题

flyingwings

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（B）

(E) also modems, which are the devices to allow

答案是B。  E为什么不对？

1，modems前面的are能不能省略？

2，B中的so too是什么意思？

joe11

楼主把这当句型记吧

so too are modems = so modems are becoming faster, more powerful, and more reliable too.

E. and also modems 中的 modem 和谁并列呢？

flyingwings

明白了，多谢！