First listen and then answer the question.
What kind of fish are they?
Fish and chips has always been a favourite dish in Britain, but as the oceans have been overfished, fish has become more and more expensive. So it comes as a surprise to learn that giant fish are terrifying the divers on North Sea oil rigs. Oil rigs have to be repaired 5 frequently and divers, who often have to work in darkness a hundred feet under water, have been frightened out of their wits by giant fish bumping into them as they work. Now they have had special cages made to protect them from these monsters. The fish are not sharksor killer whales, but favourite eating varieties like cod and skate which grow to unnatural sizes, sometimes as 10 much as twelve feet in length. Three factors have caused these fish to grow so large: the warm water round the hot oil pipes under the sea; the plentiful supply of food thrown overboard by the crews on the rigs; the total absence of fishing boats around the oil rigs. As a result, the fish just eat and eat and grow and grow in the lovely warm water. Who eats who?New words and expressions 生词和短语
Notes on the text 课文注释
1 fish and chips，油煎鱼加炸土豆片。这是英国的一种家常菜，被看作是一盘菜，因此要用单数动词。
2 North Sea，北海。
3 who often have to work in darkness a hundred feet under water, (潜水员)常常要在水面100英尺以下摸黑工作(的人员)。这是一个非限定性定语从句，对主句中的名词divers进行补充说明，因此这个从句与主句用逗号隔开。
4 be frightened out of their wits, 被吓昏了，被吓得惊慌失措。
5 favourite eating varieties，深受人们喜爱的食用的品种。
6 as a result，结果是。