题目内容

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 and 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.

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

2. A decibel is a .

A. unit that measures soundB. kind of noise

C. machine that makes loud noiseD. person who hates sound

3.According to the passage, loud noise can .

A. help people to sleep betterB. stop machines

C. cause a loss of hearing D. kill people

4. We can conclude from the passage that .

A. noise is a serious problemB. rock music isn’t noise

C. noise is only from trafficD. some people hate any sound

5.Study the diagram below. would be the quietest.

Room

Noise Level

A

40~65 decibels

B

35 decibels

C

120 decibels

D

130 decibels

A. Room AB. Room BC. Room C D. Room D

 

1.B

2.A

3.C

4.A

5.B

【解析】

试题分析:这篇短文主要介绍了噪音是大声的或人们不想听到的声音。科学家使用分贝来衡量声音的响度。强度的噪音会给人们带来许多的问题。

1.Noise is a loud or unwanted sound描述可知噪音是一种大声的或你不想听到的声音。故选B

2.Scientists use a unit of measure called decibel(分贝) to measure the loudness of a sound.描述,可知科学家使用一种称为分贝的度量单位来衡量声音的响度。故可知分贝是一种度量单位,故选A。

3.细节理解题。根据第三段constant(不断的) loud noise can cause a loss of hearing.持续的大声音会造成听力丧失。故选C。

4.归纳理解题。根据第四段可知噪音会给人们带来许多的严重问题,故选A

5.The sound of a quiet room, for example, measures 35 decibels.描述,可知安静的房间的分贝是35.,通过比较其他的选项,故选B。

考点:科普类短文阅读。

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In the past, man did not have to think about the protection of his environment. There were not many people on earth, and natural resources seemed to be unlimited.

Today, things are different. The world has become too crowded. We are using up our natural resources too quickly, and at the same time we are polluting our environment with dangerous chemicals. If we continue like this, human life on earth will not survive (继续生存).

Everyone realizes today that if too many fish are taken from the sea, there will soon be none left. Yet, with modern fishing methods, more and more fish are caught. We know that if too many trees are cut down, forests will disappear and nothing will grow on the land. Yet, we continue to use bigger and more powerful machines to cut down more and more trees.

We realize that if rivers are polluted with waste products from factories, we will die. However, in most countries waste products are still put into rivers or into the sea, and there are few laws to stop this.

We know, too, that if the population of the world continues to rise at the present rate, in a few years, there will not be enough food.

What can we do to solve these problems?

If we eat more vegetables and less meat, we will easily get more food. Land that is used to grow crops can feed five times more people than land where animals are kept.

The world population will not rise so quickly if people use modern methods of birth control.

Finally, if we educate people to think about the problems, we shall have a better and cleaner living place in the future.

1.. If we use up our natural resources and go on our environment, human beings will die out.

2. If we catch too many fishes from the sea, will be left.

3.. The world is becoming too , so we should use modern methods of

birth control to reduce the population.

4.. Educate people to think about the problems so that the earth will be better and .

5.. The passage mainly tells us the importance of protecting the environment and

to solve the environmental problems.

 

My life is always filled with sadness and little joy. However, no matter what happens, I can always face it bravely.

Last year, I couldnt believe the that I was allowed to enter the only key high school in my hometown. Then I rushed to my home and told my parents. But my father didnt seem as as I was. He just kept smoking without saying a word and my mother put her head down and couldnt help .

I knew very well what my family was . My mum had been ill in bed for2 years. We lived a hard life and I couldnt continue my schooling. I felt so upset but I could say to my parents. I decided to help my father with his work my family.

To my surprise, things completely changed the beginning of the new term. My head teacher came to my family with some money, which had been by my schoolmates. He encouraged me, Always have a dream. With tears in my eyes, I stepped into the key high school.

I have been studying hard since I entered the high school. Whenever I meet difficulties, I always my teacher and schoolmates. I have a college dream and I must work hard for it, no matter hard the life is. Just as a great man says, When one door shuts, another opens in life.

1.A. news B. story C. idea

2.A. nervousB. excited C. interested

3.A. sayingB. laughing C. crying

4.A. like B. before C. about

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