单项选择题

What is the text mainly about

A．The recognition of distance education.
B．The difference between distance education and self-study.
C．The definition and features of distance education.
D．The courses provided in distance education.

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单项选择题

Which of the following is true about distance education

A．Teachers and students seldom meet each other in class of distance education.
B．Students can have their lessons in whatever order they like in distance education.
C．Students can study at their own pace in distance education.
D．It will take students a long time to get feedback of their assignments in distance education.

单项选择题

In what aspect is the health-care economy different from other sectors of economy

A．The relationship between sellers and buyers.
B．The price of the products.
C．The quality of the products.
D．The regulations of health-care industry.