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举一反三
【多选题】（ 听力SectionC ）The people who lived in Rome two thousand years ago were already complaining about the noise in their city. They couldn’t sleep, they said, with all that traffic in the streets. For them...
A.
merely
B.
average
C.
worsening
D.
the degree of loudness
E.
we are exposed
【单选题】Do you know the difference between "sound" and "noise" "Noise" is an unwanted sound, such as (67) produced by airplanes, traffic, or industrial machinery... You may probably (68) people saying, "Ther...
A.
essentially
B.
particularly
C.
obviously
D.
similarly
【单选题】倍频程500Hz的频带为（），1/3倍频程500Hz的频带为（）。
A.
250-500Hz，400-500Hz
B.
500-1000Hz，500-630Hz
C.
355-710Hz，430-560Hz
D.
430-560Hz，355-710Hz
【多选题】41纯音测听时，以下哪些情况需要测试半倍频程（）
A.
进行助听器声场效果评估时应加测6KHZ
B.
由于纠纷涉及赔偿问题
C.
相邻两个倍频程阈值之间相差≥30dB，需要加测
D.
病史询问有明确噪声接触史，加测3KHZ、6KHZ
【单选题】Noise Pollution Psychologists now believe that noise has a considerable effect on people’s attitudes and behavior. Experiments have proved that in noisy situations (even temporary ones), people would ...
A.
can not complete his 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