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
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单项选择题
The author points out that the Greeks who studied conic sections ______.
A．invented modern mathematical applications
B．were unaware of the value of their studies
C．worked with electricity
D．were forced to resign themselves to failure
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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