Section ADirections: This section is to test your listening ability to understand short dialogues. There are 5 recorded dialogues in it. After each dialogue, there is arecorded question. Both the dialogues and questions will be spoken only once. When you hear a question, you should decide on the correct answer from the 4 choices marked A, B, C and D given in your test paper. Then you should mark the corresponding letter on the Answer Sheet with a single line through the center.
A．Give up smoking forever. B．Read the sign carefully. C．Open the windows. D．Put out his cigarette.