认真阅读给定资料，解释“给定资料4”中“当然，不仅仅是不能吃鱼这么简单”的意思。 要求：准确、简明。不超过250字。
参考答案：
解析：五大湖区污染不仅会导致人们不能吃鱼，更严重的是水源污染将直接影响人们的生产生活，对人们身体健康和工农业生产带来严重威胁，人们日常活动也将受到限制。湖区污染导致生物生存环境恶化，大量动植物死亡、消失，大量的生活用水被抽走，伴随着大量的工业污染物被排进大湖以及一些有潜在危害的水利改造工程，使得五大湖的水位持续下降，水质变差，在污染最为严重的时候，五大湖的水产品都充斥着大量的毒素，对人们生产生活构成了极大威胁；治理污染需花费政府大量的人力、物力和财力。湖区污染最终阻碍当地经济发展和社会进步。
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| Tom is six now. His mother 1 in a watch factory. She is busy all day, she has to 2 at six in the morning. Then she cooks 3 for her family. She goes to work with some 4 so she can have lunch in the factory. At six in the afternoon, she comes back and cooks supper 5 . After she does the housework, she often 6 she's tired. So she wants to have a good holiday. "What do you want a holiday for, Mummy?" "I want to have a good rest," says the woman. "I can take you to the zoo to see the 7 " Tom likes the monkeys very much and 8 wants to see the elephants. September is coming and a new school 9 begins. His mother asks, "Would you like to go to school, my dear?" "I'd love to," says the boy, " 10 I am going to have a holiday, too!" | ||||
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