单项选择题
"Sound", as defined by the psychologist, ______.
A．can be measured in the same way that "noise" is measured
B．may be extremely harmful to health
C．is not at all different from "noise"
D．can be measured by machines
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单项选择题
According to the passage, people ______.
A．can not work better in a noisy situation
B．will suffer from complete deafness because of noise pollution
C．can be psychologically affected by working in very noisy factories
D．may cooperate well in noisy surrounding
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单项选择题
... his capacity to observe was matched only by his ability to describe... means ______.
A．he was as accomplished an observer as he was a descriptive writer
B．his capacity to observe and his ability to describe were unrivalled
C．he was capable of adapting descriptions to fit his observations
D．his observations and descriptions reflected his own personal ambitions
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