单项选择题


What did the man do with the extra paper

A．He threw half of it away and kept the rest.
B．He threw half of it away.
C．He kept all the paper.
D．He gave half of it to his friend.
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单项选择题
What is the purpose of the passage
A．To tell the readers what computers will look like in the future.
B．To show the close relations between man and computers.
C．To tell the readers how important silicon microchips are.
D．To talk about the possible future uses of computers.
单项选择题
According to the writer, Adam Smith’s mistake was in believing that division of labor ______.
A．inevitably led to economic development
B．was an efficient way of organizing work
C．increased the production of existing goods
D．was an important development in methods of production
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