单项选择题

At the end we know that Balzac______.

A．was careless and lazy
B．was watched carefully in his childhood
C．brought disgrace upon his family
D．couldn't write well enough when he was young

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单项选择题

According to the author, the computer is an extension of our intellects. What, then, is used as an extension of our physical power

A．Science.
B．Engines
C．Industrialists.
D．Technology.

单项选择题

Which of the following statements best summarizes the main idea of the paragraph

A．Science has made wonderful progress in recent years.
B．Machines can do the work of many unskilled laborers.
C．Man must use scientific progress for a better world.
D．It 'is foolish to ignore the help science can give to man.

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