单项选择题

Absorbed in her work, she was totally ______ her surroundings.

A．liable for
B．separated by
C．oblivious of
D．concerned about
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单项选择题
Could a mechanical device ever ______ human intelligence--the ultimate test being whether it could cause a real human to fall in love with it
A．destroy
B．duplicate
C．forge
D．eliminate
单项选择题
She wanted desperately to turn the flower-painted china ______ on the apple- green door, and go through, but somehow she could not.
A．frame
B．pole
C．pan
D．knob
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