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.
What is the disadvantage of the distance learning course

A．It is kind of expensive.
B．It lacks person-to-person contact.
C．It has a heavy schedule.
D．It is new, so it is risky.

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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. What is the disadvantage of the distance learning course 您的浏览器不支持 audio 元素。