单项选择题


A．space
B．manned
C．true
D．artificial
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单项选择题
We can conclude from the passage that we need to control noise pollution if ______.
A．we want to stay both psychologically and physically healthy
B．we want to have better control over ourselves
C．we want to cooperate well
D．we don't want to be anxious
单项选择题
According to the passage, people ______.
A．can net work 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 a noisy surrounding
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