单项选择题

The person who ______ this type of research deserves our praise.

A．originated
B．manufactured
C．generated
D．estimated
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单项选择题
The most ______ technological success in the twentieth century is probably the computer revolu- tion.
A．prominent
B．prosperous
C．solemn
D．prevalent
单项选择题
Human behavior is mostly a product of learning, whereas the behavior of an animal depends mainly on ______.
A．consciousness
B．impulses
C．instinct
D．response
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