题目内容：
听音频：
听句子，回答问题。Directions: In this section, you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be asked about what was said. Both the conversation and the questions will be spoken only once. After each question there will be a pause. During the pause, you must read the four choices marked A．,B．, C．and D．, and decide which is the best answer. Then mark the corresponding letter on Answer Sheet 1 with a single line through the centre.
A．He is very quiet.
B．He gives amusing lectures.
C．He should give more than one series of talks.
D．He lectures only to the serious students.
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