We know the air is very important for us. Without air, we couldn't live. Other creatures can't live either. We need clean air. The dirty air is bad for us. Now the air pollution is very serious in some places. For example, the smoke from some factories make the air dirty. Exhaust gas from cars make the air dirty. The forest fire can make the air dirty, too. So we need to pay attention to the air pollution. We can plant more trees and think of other ways to sovle the problem.

B

    When old Mr Chow was a young man, he went to visit his uncle in the city. His wife and children met him at the train station when he arrived back in the countryside. When he got off the train, his wife asked, "Did you miss us?"

    "Yes, I missed you all. There's no place like home. Life in the city was strange. Uncle Tom lives in a modern neighbourhood (居住区), People go up to their homes in a big box." Mr Chow said.

    "You look tired." said Mrs Chow.

    "Yes, I need to sleep. I couldn't sleep at night because the light was much brighter (更亮）than the candle in our house."

    "Why didn't you blow it out?" asked Mrs Chow.

    "I tried (尝试）to, but it was in a glass ball." said Mr Chow.

    Zhang Ming is a student. He often goes to school on foot. This morning he went to school by bus because he got up late. Li Dong is Zhang Peng's classmate and he did not go to school. He went swimming last weekend and had a cold. The doctor asked him to take some medicine and stay in bed. So he has to stay at home for a few days. After school, Zhang Peng and his classmates are going to buy some flowers and visit him.

A: Mike, come here, please.

B: Yes, Mum.

A: Look at this brown box. What's in it?

B: A toy car?

A: No.

B: A toy monkey, I think.

A: No, it isn't. Look! This is for you.

B: A toy horse! How lovely. I like it. Thank you, Mum!

    This is me.  I am short. I like the birds.  This is my father. He is a policeman（警察）.  He is tall.

    There are three pupils in the picture. What are they doing? They are catching insects in the park. The girl is catching a butterfly with a sweep net. The boy in blue is catching a beetle on the tree. The other boy with a cap is catching a ladybird on a stone. Now the ladybird is on the ground. It is moving towards a tree. Can it climb the tree? I don't know. Let's wait and see. Oh, it can climb. Look! It is climbing up the tree. It can jump, too. An insect usually has six legs and two pairs of wings. Catching insects is very interesting. Some insects are good. They are our friends. Some are bad insects. You can catch and kill the bad ones.