2000-05-24 题有些疑问

xindongdong

24. Dolphins are sleek and powerful swimmers that found in all seas and unlike porpoises have well defined, beaklike snouts and conical teeth.

答案是b，我虽然觉得确实是b对，但却还觉得后面的have似乎也不妥。主句是dolphins are sleek and powerful swimmers, 从句若改为that are found..., 那have是不是也应该改为having才对？

谢谢指正！

marshial

个人看法：

and所引出的句子应和主句对称：and unlike porpoises dolphins have well defined......

前面一部分，同意楼主所说的改为：that are found 或found

xindongdong

俺明了，谢谢！