更多"Do you know the difference betw"的相关试题:
[单项选择]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, "There’s so much noise in the restaurant I can (69) hear you." or, "the noise is killing me." "Noise" is considered a form of pollution. Noise pollution is at its (70) in densely populated areas. It can cause hearing loss, stress, high blood pressure, sleep loss, distraction, and productivity loss.
"Sound" is (71) you hear. (72) , you hear the sound of people talking and singing, the sound of music, wind, breaking glasses... Sound travel sin sound wave at 1,100 feet an hour. Sounds are produced by objects that vibrate at a (73) that the ear can detect. This rate is called frequency and is measured (74) hertz, or vibrations per second.
Most hum ans can hear sounds between 20and 20,000 he
A. that
B. those
C. which
D. what
