题目内容：

英语阅读.高手帮忙连接（3-1）
文章：
51.For them,noise was merely a disturbance.
A.only B.only … and nothing else C.not D.not only
52.…that roar day and night up to 90 or 100 decibels.
A.as loud as B.louder than C.higher than D.go up
53.It has been established that loud noises,…,cause loss of sleep,anger and many….
A.result from B.result C.because D.lead to
54.We do know how they build quieter machines,if the public wants them.
A.machines making people quieter B.calm machines
C.machines making less noise D.silent machines
55.Actually,it will take everybody’s efforts to keep city noises from increasing.
A.go on increasing B.prevent…from increasing
C.keep…increasing D.stop…o increase