题目内容
Listen! What can you hear? You may hear many different sounds．Some of those sounds may be noise．Noise is loud or unwanted sounds．
Noise call be caused by many kinds of machines，such as motor cycles，jet planes and tractors．And，to some people，rock bands can also brining noise．
What happens to people who live near noisy machines or use them for a long time? Doctors find that these people have trouble sleeping．But，most importantly，constant（持续的）loud noise can cause a loss of hearing．
Scientists use a unit of measure（度量）called decibel（分贝）to measure the loudness of a sound．The sound of a computer，for example，measures 35 decibels．Talking measures between 40 and 65 decibels．Sounds from traffic and from some rock bands can measures over 120 decibels．Noise at this high level causes the greatest hearing loss．
1．Noise can be caused by all the following except ________ according to the passage．
A．rock bands B．tractors C．jet planes D．computers
2．“Decibel” is a ________．
A．unit that measures sound B．kind of noise
C．machines that makes very loud noise D．person who hates noise
3．According to the passage，loud noise can ________．
A．help people sleep better B．make people work longer
C．make people deaf D．make people happy and excited
4．Which of the following is TRUE?
A．Going to a concert is bad for our cars．
B．Not all sounds are noise．
C．The loudest noise comes from traffic and rock bands．
5．What's the main idea of this passage?
A．Noise pollution can be a serious problem． B．Rock bands are noisy．
C．The way to measure noise． D．How to stop noise pollution．
试题答案
1、DACBA
Listen! What can you hear? You may hear many different sounds．Some of those sounds may be noise．Noise is loud or unwanted sounds．
Noise call be caused by many kinds of machines，such as motor cycles，jet planes and tractors．And，to some people，rock bands can also brining noise．
What happens to people who live near noisy machines or use them for a long time? Doctors find that these people have trouble sleeping．But，most importantly，constant（持续的）loud noise can cause a loss of hearing．
Scientists use a unit of measure（度量）called decibel（分贝）to measure the loudness of a sound．The sound of a computer，for example，measures 35 decibels．Talking measures between 40 and 65 decibels．Sounds from traffic and from some rock bands can measures over 120 decibels．Noise at this high level causes the greatest hearing loss．
1．Noise can be caused by all the following except ________ according to the passage．
A．rock bands B．tractors C．jet planes D．computers
2．“Decibel” is a ________．
A．unit that measures sound B．kind of noise
C．machines that makes very loud noise D．person who hates noise
3．According to the passage，loud noise can ________．
A．help people sleep better B．make people work longer
C．make people deaf D．make people happy and excited
4．Which of the following is TRUE?
A．Going to a concert is bad for our cars．
B．Not all sounds are noise．
C．The loudest noise comes from traffic and rock bands．
5．What's the main idea of this passage?
A．Noise pollution can be a serious problem． B．Rock bands are noisy．
C．The way to measure noise． D．How to stop noise pollution．
查看习题详情和答案>>Stop. Listen! What do you hear? You may hear many different sounds. Some of those sounds may be noise. Noise is a loud or unwanted sound.
Noise can be caused by many kinds of machines, such as motorcycles, jet planes, farm tractors(拖拉机), rock music is also noise.
What happens to people who live near noisy machines or use them over a period of time? Doctors have found that these people have trouble in sleeping. But, most important, constant(不断的) loud noise can cause a loss of hearing.
Scientists use a unit of measure called decibel(分贝) to measure the loudness of a sound. The sound of a quiet room, for example, measures 35 decibels. Talking measures between 40 and 65 decibels. Sounds from traffic and from some rock bands can measure over 120 decibels. Noise at this high level(层次) causes the great hearing loss.
根据短文内容，选择正确的答案（每小题1分，共5分）
小题1:According to the passage, noise is .
| A．any kind of sound | B．a loud or unwanted sound |
| C．all sounds that you can hear | D．terrible sound |
| A．unit that measures sound | B．kind of noise |
| C．machine that makes loud noise | D．person who hates sound |
| A．help people to sleep better | B．stop machines |
| C．cause a loss of hearing | D．kill people |
| A．noise is a serious problem | B．rock music isn’t noisy |
| C．noise is only from traffic | D．some people hate any sound |
| Room Noise Level A 40~65 decibels B 35 decibels C 120 decibels D 130 decibels |
Noise can be caused by many kinds of machines, such as motorcycles, jet planes, tractors and so on. And, to some people, rock bands are also noise.
What happened to people who live near noisy machines or use them over a period of time? Doctors find that these people have trouble in sleeping, But, most important, constant loud noise can cause a loss of hearing.
Scientists use a unit of measure called a decibel to measure the loudness of a sound. The sound of a quiet room, for example, measures 35 decibels. Talking measures between 40 and 65 decibels. Sounds from traffic and from some rock bands can measure over 120 decibels. Noise at this high level causes the greatest hearing loss.
【小题1】 From the article we know noise is ___________.
| A．wanted sound | B．loud and unwanted sound |
| C． all sounds that you can hear | D．comfortable sound |
| A．unit that measures sound | B．kind of noise |
| C．machine that makes very loud noise | D．person who hates noise |
| A．help people sleep better | B．stop machine |
| C． cause a loss of hearing | D．kill people |
| A．noise pollution can be a serious problem |
| B．rock bands are noisy |
| C．noise can cause people to be mad |
| D．some people hate noise deeply |