考研英语听力基本功训练1: Passage12
The majority of fish live in shallow parts of the se
Fish are varied but they have certain common feature
Fins are special organs which help the fish to swim in wate
They can help the fish to stea
and steer itself as it moves through the wate
The fish breathes by swallowing wat
and passing the water over the gills which are on the side of its hea
These openings absorb the oxygen form the water
and help them to live in wate
