Jack is an English teacher . He is young . He has a round face and black hair . There are fifty students in his class .

    They all like him . Now it's in the morning . Students are studying in the classroom . Jack is there . He is helping them study English . He is a good teacher .

    Mrs Green has a little dog. One day the dog is lost, and it's snowing outside. Mrs Green looks for it everywhere but she can't find it. She calls the police. A young policeman answers the phone, "Don't worry, madam.

    Dogs are really strong animals. They can live for several days in the snow and be all right."

    Mrs Green is happy to hear the words. She says, "My dog is very clever. She almost can talk." "Well," the policeman says, "why don't you put your telephone down? Perhaps she is trying to telephone you now."

    When I was very young ,the sky in my hometown(家乡) was nice and beautiful, the sky was very blue, and the air was fresh. There were some birds singing, and there were many trees in the fields. I often played with my friends in the open air. I liked it.

    Now the people are rich, but the sky in my hometown isn't blue. The trees were cut down, and there aren't many birds. And the air isn't fresher than before. The rubbish is put here and there, it was bad for our health. So we must do something.

阅读短文判断正误

The students are talking on the telephone.