[問題]0005文法考古題24題(Structure)

[chemyryan]

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
我有幾個問題想請問各位同學
1.B應該改為are found嗎? 表示被動。如果是的話後面有個and,那後面改寫成and are unlike porpoises 可以嗎?因為我有時會對連接詞連接的項目搞混
2.C為何不是動名詞形式而是原形動詞?因為前面有個主動詞are,後面有個形容詞子句that.....那這句have開頭的句子在文法上該如何定義?
不知我的觀念是有有錯?但還是post上來請教大家
謝謝

[liwuu]

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

and當連接詞,連接前後兩個動詞(are 和 have)
found表被動...