单项选择题

If someone holds a book 6 feet directly in front of Denis and then moves it only 1 foot directly in front of him, what change in sound does. Dennis hear

A．A lover-pitched sound.
B．A higher-pitched sound.
C．A sharper sound.
D．A softer sound.
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单项选择题
The writer says that a blind baby is doubly handicapped in comparison to a sighted child because ______.
A．his world is completely dark
B．he can never make eye contact with other people
C．he has no visual stimulation from his surroundings
D．he can not perceive the world with his eyes
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The word reputation in my reputation in town enhanced my reputation at work is used in a(n) ______ sense.
A．derogatory
B．ironical
C．appreciative
D．neutral
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