[求助] 98-08-11 99-08-29 请教新东方教材上的几道题!!

６．Mosaic is the art of closely setting small,colored pieces , such as stone or glass, into a surface ---------

A. and create a decorative design   C . to create a decorative design

27. Sawfish are sharklike fish have "saws"of cartilage set with two rows of teeth on their snout .

为什么不选Ｂ呢？Ａ哪里错了呢？？

C

已有are, have--》that have or having

请把题目贴全

禁止偷工减料

同意，感谢大家支持！

Support.  lease always post the complete original question when asking.

很多时候答案是比较出来的。