单项选择题

Questions 4 to 7 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions. Now listen to the conversation. In a distance learning course, one ____.

A．does not have to see the professors
B．also needs to take exams
C．reduces the learning expenses
D．must revise the schedule to attend the course

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单项选择题

单项选择题

Questions 4 to 7 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions. Now listen to the conversation. In a distance learning course, one ____. 您的浏览器不支持 audio 元素。