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    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．

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    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．

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    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 soundB．a loud or unwanted sound
    C．all sounds that you can hearD．terrible sound
    小题2:A decibel is a      .
    A．unit that measures soundB．kind of noise
    C．machine that makes loud noiseD．person who hates sound
    小题3:According to the passage, loud noise can      .
    A．help people to sleep betterB．stop machines
    C．cause a loss of hearingD．kill people
    小题4:We can conclude（推断） from the passage that      .
    A．noise is a serious problemB．rock music isn’t noisy
    C．noise is only from trafficD．some people hate any sound
    小题5:Study that diagram below.       would be the quietest.
     Room   Noise Level
    A      40~65 decibels
    B      35 decibels
    C      120 decibels
    D      130 decibels
          A. Room A        B. Room B           C. Room C           D. Room D 

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    Stop! Listen! What do you hear? You may hear many different sounds. Some of those sounds may be noisy. Noise is loud and unwanted sound.
    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 soundB．loud and unwanted sound
    C． all sounds that you can hearD．comfortable sound
    【小题2】  A “decibel” is a _________
    A．unit that measures soundB．kind of noise
    C．machine that makes very loud noiseD．person who hates noise
    【小题3】According to the passage, loud noise can ________.
    A．help people sleep betterB．stop machine
    C． cause a loss of hearingD．kill people
    【小题4】The main idea of this passage is that __________
    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
    【小题5】 Study the chart below, Which room would be the quietest?
    Room
    		Noise Level
    A
    		35 decibels
    B
    		120 decibels
    C
    		130 decibels
    D
    		40 decibels
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    Stop! Listen! What do you hear? You may hear many different sounds. Some of those sounds may be noisy. Noise is loud and unwanted sound.
    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 ___________.
    wanted sound               B. loud and unwanted sound
    C.  all sounds that you can hear    D. comfortable sound
    【小题2】  A “decibel” is a _________

    A．unit that measures soundB．kind of noise
    C．machine that makes very loud noiseD．person who hates noise
    【小题3】According to the passage, loud noise can ________.
    help people sleep better         B. stop machine
    C.  cause a loss of hearing         D. kill people
    【小题4】The main idea of this passage is that __________
    noise pollution can be a serious problem
    rock bands are noisy
    noise can cause people to be mad
    some people hate noise deeply
    【小题5】 Study the chart below, Which room would be the quietest?
    Room
    		Noise Level
    A
    		35 decibels
    B
    		120 decibels
    C
    		130 decibels
    D
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    A.  Room A                   B.  Room B
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    Stop! Listen! What do you hear? You may hear many different sounds. Some of those sounds may be noisy. Noise is loud and unwanted sound.
    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 ___________.
    wanted sound               B. loud and unwanted sound
    C.  all sounds that you can hear    D. comfortable sound
    小题2:  A “decibel” is a _________
    A．unit that measures soundB．kind of noise
    C．machine that makes very loud noiseD．person who hates noise
    小题3:According to the passage, loud noise can ________.
    help people sleep better         B. stop machine
    C.  cause a loss of hearing         D. kill people
    小题4:The main idea of this passage is that __________
    noise pollution can be a serious problem
    rock bands are noisy
    noise can cause people to be mad
    some people hate noise deeply
    小题5: Study the chart below, Which room would be the quietest?
    Room
    		Noise Level
    A
    		35 decibels
    B
    		120 decibels
    C
    		130 decibels
    D
    		40 decibels
    A.  Room A                   B.  Room B
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    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 soundB．a loud or unwanted sound
    C．all sounds that you can hearD．terrible sound
    【小题2】A decibel is a      .
    A．unit that measures soundB．kind of noise
    C．machine that makes loud noiseD．person who hates sound
    【小题3】According to the passage, loud noise can      .
    A．help people to sleep betterB．stop machines
    C．cause a loss of hearingD．kill people
    【小题4】We can conclude（推断） from the passage that      .
    A．noise is a serious problemB．rock music isn’t noisy
    C．noise is only from trafficD．some people hate any sound
    【小题5】Study that diagram below.       would be the quietest.
     Room   Noise Level
    A      40~65 decibels
    B      35 decibels
    C      120 decibels
    D      130 decibels
          A. Room A        B. Room B           C. Room C           D. Room D 

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