单项选择题

The author indicates that most important advances made by mankind dome from ______.

A．technical applications
B．apparently useless information
C．the natural sciences
D．the biological sciences
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单项选择题
The title below that best expresses the ideas of the passage is ______.
A．Technical Progress
B．Man's Distinguishing Characteristics
C．Learning for Its Own Sake
D．The Difference Between Science and Philosophy
单项选择题
The author includes among the sciences all the following EXCEPT ______.
A．literature
B．economics
C．anthropology
D．astronomy
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