Listen to the tape and fill in the correct information in the spaces below.
1. Walk along the streets of any major city and you will see that the air you breath is not very fresh. Air pollution is a serious problem in many of the world's big cities. It is caused by cars and factories. We also pollute the air when we burn oil or coal for energy and heat.
2. Oh my! Look at this! That fish every where! What happened? We used to be able to drink the water in our rivers and lakes. But toady, many rivers and lakes have been so polluted, that the water is useless. Factories and the drainage are polluting the water. We are not taking good care of our water. We use too much water and we waste water. What is more, we pollute water.
3. This beautiful mountain is one of the most popular places for people to visit during holidays and festivals. Thousands of people come here to hike in the mountain's forests and valleys. Unfortunately, the tourists leave a lot of rubbish behind. Plastic bags, soda bottles and other things are thrown every where. Many tourists also pick flowers and damage the trees. And many hotels and restaurants being built are having a negative effect on the environment too. |