单项选择题

Which word best describes the attitude of the author

A．Inquisitive.
B．Technological.
C．Pessimistic.
D．Constructive.
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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.
单项选择题
The underlined word amplify in the paragraph probably means______.
A．underestimate the strength
B．ignore the strength
C．rectify the strength
D．increase the strength
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