论文部分内容阅读
长江,祖国第一大河。它接纳了七百多条支流,洋洋洒洒地分布在沿江十几个省市,人口3亿6千万,是我国的主要渔区。其中被誉为古生物活化石的白鳍豚和一类珍稀水生动物中华鳄就繁衍栖息在这里。随着人们生产和生活的发展,污染等环境问题已使长江千疮百孔,生活在长江及其支流
Yangtze River, the largest river in the motherland. It has accepted more than 700 tributaries, eagerly distributed in more than a dozen provinces and cities along the Yangtze River with a population of 360 million and is China’s major fishing area. Among them, the white dolphin dolphin, known as the paleontological living fossil, and the rare aquatic animal, Chinese crocodile, breed here. With the development of people’s production and living, the environmental problems such as pollution have caused the Yangtze River to have many holes and live in the Yangtze River and its tributaries