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  3. It’s difficult to imagine the sea ever running out of fish. It’s so vast, so

It’s difficult to imagine the sea ever running out of fish. It’s so vast, so

游客2023-07-04  57
问题     It’s difficult to imagine the sea ever running out of fish. It’s so vast, so deep, so【B1】______. Unfortunately, it’s not【B2】______. Over-fishing,【B3】______destructive fishing practices, is killing off the fish and【B4】______ their environment.
    Destroy the fish, and you destroy the fishermen’s means of living. At least 60 percent of the world’s commercially important fish【B5】______are already over-fished, or fished to the limit. As a result, governments have had to close down some areas of sea to【B6】______fishing.
    Big, high-tech fleets ensure that everything in their path is【B7】______ the water. Anything too small, or the wrong thing, is thrown back either dead or dying. That’s an average of more than 20 million metric tons every year.
    When you consider that【B8】______a quarter of the world catch, you begin to see the sides of the problem. 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, some countries are beginning to deal with this problem, but it’s vital we find【B9】______ways of fishing, before every ocean becomes a dead sea. It would【B10】______to give the fish enough time to recover, grow to full size and reproduce; then catch them in a way that doesn’t kill other innocent sea life. [br] 【B6】
选项
答案 commercial
解析 意为“商业的，营利的”。
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