单项选择题

What is main purpose of the passage（）

A. To outline contrasting types of economy.
B. To explain the science of economics.
C. To argue for the superiority of one economics.
D. To compare barter and money exchange markets.

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单项选择题

Why is the government asking for comments on the new rules（）

A. Because it is trying to fool people.
B. Because it doesn’t know how to make rules.
C. Because it wants to be nice.
D. Because it wants to hear what the citizens have to say.

单项选择题

What will happen to residents if they don’t comply with the law（）

A. They will have to go to work in a factory.
B. They will have to pay a fine,
C. They will go to jail for ninety days.
D. The government will take away their woodstove