单项选择题

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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What does Mrs. Daniels teach
A．She teaches Tracey English.
B．She teaches Tracey math.
C．She teaches Tracey art.
D．She doesn't teach Tracey.
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What is the relationship between the two speakers
A．They have not met ever before.
B．Teacher and student.
C．They are schoolmates.
D．They are classmates.
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