单项选择题

The writer gives the example of national defense in paragraph 2 in order to show that______.

A．there will be no safety if there is no national defense
B．all the people should be responsible for national defense
C．a public good is a shared benefit for the whole society
D．some public goods are more important than others
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单项选择题
From the passage we learn that the purpose of collecting taxes is to______.
A．ensure the continuous supply of public goods
B．reduce the difference between the rich and the poor
C．get extra money to support public goods
D．remind people of their duty
单项选择题
When you write about your education, you should list______.
A．the names of your teachers who gave the main courses
B．the time of different stages of education
C．the addresses and telephone numbers of schools and universities you attended
D．the name of your classmates who were closest to you
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