topic one：environment protection（环境保护）
water pollution
with the development of industry, water pollution is becoming more serious now. the polluted water not only kills fish, it is also harmful to our health. many people get sick because they drink the polluted water. in some rivers the water is so dirty that they can even kill plants.
we should fight against the pollution. we should stop using harmful things. i wish it is not a dream that in the near future we can have clean rivers again.
environment protection
nowadays, people's life has changed a lot with the development of modern technology and economy, which has put lots of negative effects on the environment.
why this? because, firstly, some factories are pouring wastes into rivers, lakes, seas and so forth; secondly, because of human activities, a gre