[求助]一道语法问题

stellate

不知道划线在哪里，不过句子里有明显的错误，that后面的found应该是从句谓语，应该用被动态，are found.　在所有海洋中可见。

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

黑色部分是主句，that引导定语从句修饰swimmers.and连接两个并列谓语。其他灰色部分是修饰成分和插入语。

即使不考虑dolphins应该是被找到的，单独看found,原形find vt.后面没有宾语只能是分词定语或者漏了be动词的谓语。

janegaojian

请你给出这道题的内容，谢谢

lea0832

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





我不知道这里为什么要选B，因为这里已经有3个动词2个连词了。