题目内容
听力原文：W : What do you think of Jane's speech？
M: Even though her speech was the last one on the program, it was the best one.
Which of the following statements is true？
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有一种键有良好的定心性能，可在轴槽中摆动以适应键槽底面，但键槽对轴的削弱较大，只适用于轻载联结，这种键是()。
听力原文：If you only need to travel a short distance, the quickest way to travel in most cities is to walk. During working hours(between approximately 9:00 a. m. and 5:00 p.m. Monday through Friday), the traffic is very heavy on most city streets, sometimes coming to a complete stop in places. As a result, many people prefer to walk. You should therefore be aware of some of the traffic laws. It is against the law in many cities to cross the street at any place except at the corner. These rules may not be follwed as closely, because the traffic is usually not so heavy. However, the purpose of the laws is to provide for the safety and protection of the people. Remember to look both ways for auto- mobiles when you cross the street.
What's the best way to travel in most cities？
信号反馈装置、安装泄放装置、检漏装置、灭火剂输送管网是()的主要组成部件。
听力原文：M: Have you done this before？
W: No, but if we follow the directions, we shouldn’t have any trouble.
What is important for them to do？
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