Section B
Directions: In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A, B, C and D.
听力原文： Flexible working hours were invented in Germany in the late 1960s, but reached Britain in 1972. The system allows workers to start and finish work whenever they want, with only two requirements. These are: firstly, that all workers must be present for certain "key" times in the day, and secondly, that ail workers must work the agreed total amber of hours per week.
The system has proved an almost total success wherever it has been tried. A survey of 700 workers on flexible hours showed three main advantages: a better balance between working and private life, avoidance of the need to travel during rush hours and the ability to be able to finish a certain task before leaving.
From the employer's point of view, the system tends to increase productivity, reduce labor mover first. "Flexible time" was mainly confined to white-collar workers, but it is now being applied to manual workers too.
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A. British.
B. Americans.
C. Germans.
D. Japanese.