问题
单项选择题
Passage Two
Questions 30 to 32 are based on the passage you have just heard.
A．To drive the train after it is started automatically.
B．To start the train and to drive it when necessary.
C．To take care of the passengers on the train.
D．To send commanding signals to the command spot.
答案
参考答案：B
解析：[听力原文]
What is the task of the one worker on the Victoria Line train
由短文中提到的on the train(= On the Victoria Line train)，there is only one worker．If necessary，this man can drive the train． But usually he just starts it；it runs and stops by itself可知，在维多利亚线运营的火车上，工人只需启动火车，并在必要时进行驾驶，B项正确。