Carl this outdoor activity with Katie.
Hundreds of years ago, life was harder than it is today. People didn't have modern machines. There was no modern medicine, either.
Life today has brought new problems. One of the biggest is pollution. Water pollution has made our rivers and lakes dirty. It kills our fish and pollutes our drinking water. Noise pollution makes us talk louder and become angry more easily. Air pollution is the most serious kind of pollution to all living things in the world.
Cars, planes and factories all pollute our air every day. Sometimes the polluted air is so thick that it is like a quilt (被状物) over a city. This kind of quilt is called smog.
Many countries are making rules to fight pollution. Factories must now clean their water before it is thrown away, and they mustn't let dirty smoke go into the air.
We need to do many other things. We can put waste things in the dustbin and do not throw them on the ground. We can go to work by bus with our friends in the same car. If there are fewer people driving, there will be less pollution.
Rules are not enough. Every person must help to fight pollution.
More and more advertisements appear on the Web. You have to be careful not to be fooled or tricked (欺骗) by the advertisements on the Internet. Something is said to be a bargain, but it isn't always cheap. And some so-called new things just have a new outside.
However, shopping online is a kind of fashionable thing today. I love to buy things for everyday use, so I often get lots of information about them on websites online. For example, if I want an MP4, I can choose my favorite one, and look for what the users like or don't like about it, then decide whether to buy or not. And at the same time, you don't have to go to a shop or walk around a crowded shopping area, so you don't have to waste much time. The Internet is really useful for shopping, but be careful not to spend too much.
—Some books and a pencil-box.
—I prefer pink.
do students clean up the street?
—About fifty yuan.
I afraid of teachers.
