第1个回答 2014-01-10
Lesson 90 What's for supper?
Key to Summary writing
Divers working on North Sea oil rigs are often terrified by giant fish that bump into them when they are working in deep water. These fish are not sharks or whales. On the contrary, they are favourite eating varieties that grow to unnatural sizes. Three factors have caused this to happen：the first is the warmth from oil-pipes; the second is the supply of plentiful food; the third is the absence of fishing round the rigs.本回答被网友采纳