新编四级听力练习 第267期

Section C Compound Dictation
It's difficult to imagine the sea ever running out of fish. It's so vast, so deep, so (36) ______ . Unfortunately, it's not bottomless. Over-fishing, (37) ______ with destructive fishing practices, is killing off the fish and (38) ______ their environment.
Destroy the fish, and you destroy the fishermen's (39) ______ of living. At least 60 (40) ______ of the world's commercially important fish (41) ______ are already over- fished, or fished to the limit. As a result, governments have had to close down some areas of sea to commercial fishing.
Big, high-tech fleets (42) ______ that everything in their path is pulled out of water. Anything too small, or the wrong thing, is thrown back either dead or dying. That's an (43) ______ of more than 20 million metric tons every year.
(44) _____________________________________________________________________ .
In some parts of the world, for every kilogram of prawns (对虾) caught, up to 15 kilograms of unsuspecting fish and other marine wildlife die, simply for being in the wrong place at the wrong time.
True, (45) ___________________________________________________________________ , before every ocean becomes a dead sea.
(46) ________________________________________________________________________ , then catch them in a way that doesn't kill other innocent sea life.