听力原文：

There are 50 students in Class Three. Forty percent of them want to be doctors, and 30 percent of them want to be astronauts. Ten percent of them want to be teachers, and another 10 percent of them want to be lawyers. Four students in Class Three were interviewed on Tuesday. They are Linda, Jenny, Betty and Tony. Linda is interested in chemistry, and she wants to be a doctor in the future. Jenny likes children very much, and she wants to be a teacher. Betty’s father is an astronaut, and she wants to be an astronaut like her father. Tony was born in June, 2006. He is the youngest student in Class Three. He wants to be an engineer.

答案： 2. C  3. A