[al:新概念英语（二）] [ar:MP3 同步字幕版（英音）] [ti:What's for Supper?] [by:更多学习内容，请到chazidian.com搜索“新概念”] [00:12.27]What kind of fish are they? [00:17.23]Fish and chips has always been a favourite dish in Britain, [00:22.23]but as the oceans have been overfished, fish has become more and more expensive. [00:28.54]So it comes as a surprise to learn that giant fish are terrifying the divers on North Sea oil rigs. [00:37.41]Oil rigs have to be repaired frequently and divers, who often have to work in darkness [00:44.69]a hundred feet under water, have been frightened out of their wits by giant fish bumping into them as they work. [00:55.23]Now they have had special cages made to protect them from these monsters. [01:01.05]The fish are not sharks or killer whales, [01:04.84]but favourite eating varieties like cod and skate which grow to unnatural sizes, [01:11.80]sometimes as much as twelve feet in length. [01:16.73]Three factors have caused these fish to grow so large: [01:21.21]the warm water round the hot oil pipes under the sea; [01:26.20]the plentiful supply of food thrown overboard by the crews on the rigs; [01:31.98]the total absence of fishing boats around the oil rigs. [01:36.37]As a result, the fish just eat and eat and grow and grow in the lovely warm water. [01:43.16]Who eats who?