题目

Dr．Sylvia Earle wants you to stop eating fish．It’s not because fish are endangered, though wild fish stocks in many oceans are very low．It’s not because they’re bad for you, though fish in many areas are exposed to poisonous substances in the water．It’s because they’re smart． “Fish are sensitive, they have personalities,” says the marine biologist．For Earle, eating a fish would be like eating a dog or a cat．“I would never eat anyone I know personally.” There’s a lot more to fish than meets the eye: they talk to each other, they like to be touched, and they en若是有理数，求的值。