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(拖拉機(jī)), 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(不斷的) loud noise can cause a loss of hearing.
Scientists use a unit of measure called decibel(分貝) 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(層次) causes the great hearing loss.
根據(jù)短文內(nèi)容，選擇正確的答案（每小題1分，共5分）
小題1:According to the passage, noise is      .
A．a(chǎn)ny kind of soundB．a(chǎn) loud or unwanted sound
C．a(chǎn)ll sounds that you can hearD．terrible sound
小題2:A decibel is a      .
A．unit that measures soundB．kind of noise
C．machine that makes loud noiseD．person who hates sound
小題3:According to the passage, loud noise can      .
A．help people to sleep betterB．stop machines
C．cause a loss of hearingD．kill people
小題4:We can conclude（推斷） 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
小題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 

小題1:B
小題2:A
小題3:C
小題4:A
小題5:B

試題分析：本文主要介紹了什么是噪音，產(chǎn)生噪音的環(huán)境以及噪音對(duì)人的危害，以引起我們的重視。
小題1:根據(jù)Noise is a loud or unwanted sound.可知選B。
小題2:根據(jù)Scientists use a unit of measure called decibel(分貝) to measure the loudness of a sound.可知選A。測(cè)量聲音的一個(gè)單位。
小題3:根據(jù)Noise at this high level(層次) causes the great hearing loss.可知選C。
小題4:通過(guò)短文的描述我們可以知道生活中可以產(chǎn)生噪音的環(huán)境很多，對(duì)人的危害也很大，故是一個(gè)嚴(yán)重的問(wèn)題，選A。
小題5:decibels是表示音量大小的一個(gè)單位，數(shù)值越小則聲音越小，故選B。
點(diǎn)評(píng)：這樣的說(shuō)明性文章一般都主旨鮮明,很容易在文中找到答案。做題時(shí)要注意文章的首段和每一段的首句或尾句，因?yàn)樗鼈兺褪俏恼碌闹黝}句。
練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：初中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解


1. Know the fire exit (消防通道) and plan two ways out.
2.If you hear the smoke alarm or smell smoke, Shout "Fire! Everyone out!" to awaken anyone
still asleep and to let others know there is a fire.
3. Feel the door with the back of your hand if there's a fire.
●If it's hot, use the window if possible. A warm door may mean there is a fire outside.
●If the door is cool, open it slowly, then crawl out of the building.
●If heat and smoke come in when you open the door, close it tightly, and find another way out.
4. Don’t hide! Go outside! Never hide under beds when there is a fire.
5. Stay low and crawl below the smoke to safety.  Smoke goes up with the warm air and the air below is fresher.
6. Don't stop to put on your clothes or look for valuables (財(cái)物).
7. Don’t go back into a burning house for any reason.
8.Wait for your family at a meeting place outside,such as a big tree or the entrance( 入口) of the housing estate（小區(qū)）, to know everyone is safe.
9. If you can’t escape from a room because of a fire outside, put wet clothing, towels, or blankets at the bottom of the door to keep the smoke out.  
10.Open your window and ask for help if you can’t escape through the door.
11. Stop, Drop and Roll if your hair or clothes are on fire. Shout for help, but don't run. Running makes fire burn faster.
Stop where you are.
Drop to the ground while covering your face with your hands to protect it.
Roll over and over until the fire is out.
小題1:Why do you shout "Fire! Everyone out!”?
A. To ask people to put on their clothes
B. To ask people to look for valuables.
C. To awaken anyone still asleep and to let others know there is a fire.
小題2:If the door is hot,______________
A. open it slowly, then crawl out of the building.
B. use the window if possible
C. open it and walk out of the buliding
小題3:From the passage, we know we should__________ if there is a fire.
A. plan two ways out
B. look for valuables first
C. hide under beds
小題4:If your hair or clothes are on fire，__________.
A. run quickly
B. stop, drop and roll
C. jump downstairs
小題5:The title of the passage is :________.
A. Stop, drop and roll
B. Fire safety rules
C. Fire is dangerous

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解

Someone says，“Time is money”，but I think time is  1 important than money．Why? Because when money is spent，we can get it back．However，when time is  2 ，it’ll never 3 ．That is  4 we mustn’t waste time．It goes without saying that the  5 is usually limited（有限的）．Even a second(秒) is very important．We should make full use of (充分利用)our time to do 6 useful．But it is a pity that there are a lot of people who do not know the importance of the time．They spent their limited time smoking，drinking and  7 ．They do not know that wasting time means wasting part of their own  8 ．
In a word，we should save time．We shouldn’t  9 today’s work for tomorrow．Remember we have no time to  10 ．
小題1:
A．muchB．lessC．mush less D．more
小題2:
A．costB．bought C．goneD．finished
小題3:
A．returnB．carryC．takeD．bring
小題4:
A．whatB．thatC．becauseD．why
小題5:
A．moneyB．timeC．dayD．food
小題6:
A．nothing B．somethingC．a(chǎn)nythingD．everything
小題7:
A．reading B．writing C．playingD．working
小題8:
A．timeB．foodC．money D．lives
小題9:
A．stopB．leaveC．letD．give
小題10:
A．loseB．saveC．spend D．take

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：不詳 題型：完形填空

完形填空 (共15小題；每小題1分，滿分15分)
閱讀下面短文，從每題所給的A、B、C、D四個(gè)選項(xiàng)中，選出最佳選項(xiàng)
What will you do to make sure you reach your goals? There are 1 main steps .
First, sit down and 　2 your dreams out. By writing them you will get a better idea of where you really want to go. Imagine yourself at the end of the year or maybe 3　 five years. What do you see? 4 do people see you? What are you doing? Are you 　5　?
Well, a dream is just that. It’s a vision (遠(yuǎn)見(jiàn)) of how you 　6　 yourself in the future. As long as you know the direction in which you want to go, you can begin 　7　 some goals.
8 come the goals. Goals are ‘wants’. So are dreams, but goals are more specific (具體的). If you want to be rich, tell how much 9 you need to be rich. If you want 　10 grades, tell what you mean by ‘good’. In fact, the more specific the goal is, the 　11　 it will be to get it. Give numbers and times. Don’t use words like ‘lots’ or ‘more’. 　12, I want a ‘B’ in each of my subjects.
Third are the objectives (目標(biāo)). They tell 　13　 what you will do and when you will do it. When you think about what you will do, don’t use words like ‘　14　’ or ‘maybe’. Be sure your objectives can be measured (估量). Every day or every week you can ask, ‘Did I 　15　 this?’ and you can answer with either a yes or a no. Don’t leave room for ‘maybes’.
小題1:
A．twoB．three C．four D．five
小題2:
A．work B．help C．write D．sell
小題3:
A．inB．forC．during D．before
小題4:
A．What B．WhoC．Which D．How
小題5:
A．energeticB．successful C．helpfulD．unfair
小題6:
A．seeB．forgetC．enjoyD．introduce
小題7:
A．breaking offB．looking upC．giving up D．working on
小題8:
A．First B．SecondC．Third D．Fourth
小題9:
A．waterB．a(chǎn)ttentionC．moneyD．knowledge
小題10:
A．poor B．low C．badD．good
小題11:
A．smaller B．biggerC．easier D．harder
小題12:
A．For exampleB．By the wayC．Of courseD．In fact
小題13:
A．normallyB．probablyC．exactlyD．shortly
小題14:
A．waitB．tryC．decideD．waste
小題15:
A．prefer B．need C．forget D．do

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解


I have had thousands of classes since I started school nine years ago. But only one   36 was the most important.
It happened last term just after I had got a   37 result in an exam. I was sad and had lost my confidence. I decided to go to a class which can tell me how to be  38 .
The speaker walked into the room. But he did not start talking  39 a teacher. In­stead, he held up a twenty yuan note(鈔票) !
“Who wants this?” he asked. Unsurprisingly,   40 of us in the class held up our hands.
The speaker smiled. Then he put up the note on the blackboard and asked the same question. Again, we all put up our hands. The speaker smiled again, but   41 nothing. Suddenly, he threw the note onto the floor! Then he asked the same  42 a third time.
I didn’t   43 what the speaker was doing. Why was he asking the same question again and again? I didn't know what to do. I wanted the note,   44 I put my hand up again. After a while, he  45 the note and started to laugh. “You have all just told me how to be­come successful,”   46 said to us with the note in his hand.
“The note is worth twenty yuan. It is   47 worth twenty yuan, even though I throw it on the floor. You are like the note. No matter  48 happens to you, you still have your worth.”
When I heard those words, I was deeply moved. Suddenly, I  49 I was worth a lot. I may have done badly in an exam, but it doesn't   50 I can’ t do well in the future. If I believe in myself, I will be successful!
小題1:
A．classroomB．subjectC．classD．school
小題2:
A．sameB．goodC．luckyD．bad
小題3:
A．comfortableB．successfulC．famousD．rich
小題4:
A．likeB．forC．a(chǎn)boutD．by
小題5:
A．bothB．neitherC．a(chǎn)llD．none
小題6:
A．saidB．boughtC．sawD．wanted
小題7:
A．studentB．teacherC．questionD．way
小題8:
A．rememberB．understandC．noticeD．find
小題9:
A．soB．thoughC．ifD．or
小題10:
A．took outB．threw awayC．picked upD．put down
小題11:
A．youB．heC．sheD．they
小題12:
A．neverB．sometimesC．hardlyD．a(chǎn)lways
小題13:
A．whenB．whoC．whatD．how
小題14:
A．realizedB．forgotC．dreamedD．decided
小題15:
A．knowB．meanC．thinkD．complain

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解


Have you ever wondered?
1.      Why do airplanes take longer to fly west than east?
It can take five hours to go west-east from New York (NY) to London but seven hours to travel east-west from London to NY. The reason for the difference is an atmospheric phenomenon (大氣現(xiàn)象) known as the jet stream (氣流). The jet stream is a very high altitude (=" above" sea level) wind which always blows from the west to the east across the Atlantic. So the planes moving at a constant air speed go faster from the west to the east when they are moving with the wind than in the opposite.
2.      What would happen if the gravity on Earth was suddenly turned off?
Supposing we could magically turn off gravity. Would buildings and other structures（建筑物）float away? What happened would depend on (依靠) how strongly the things were attached (吸附) to the earth. The earth is moving at quite a speed, moving at over a thousand miles per hour. If you turn something around your head on a string, it goes around in a circle until you let go of the string. Then it flies off in a straight line. ‘Turning off’ gravity would be like letting go of the string. Things not attached to the earth would fly off in a straight line. People in buildings would suddenly shoot upwards at a great speed until they hit the ceiling (=" top" surface of a room). Most things outside would fly off into space.
小題1:What information can we get from the first passage?
A．It is the jet stream that affects how fast airplanes fly.
B．Planes go slower when they are moving with the wind.
C．It takes more time to fly from NY to London than from London to NY.
D．The jet stream always blows from the east to the west across the Atlantic.
小題2:The underlined word “shoot” in the 2nd paragraph means “_________”.
A．send for B．move quicklyC．come out D．grow quickly
小題3:It can be known that without gravity _________.
A．buildings and other structures would float away
B．trees and buildings would not so easily fly off
C．something around your head would not float away
D．everything outside buildings would fly off into space
小題4:Where can we read this passage?
A．In a research paper. B．In a short story.
C．In a travel magazine.D．In a student’s book

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：不詳 題型：完形填空


We are all busy talking about using the Internet, but how many of us know the history of the Internet?
Many people are ___36___ when they find that the Internet was set up in the 1960s. At that time, computers ___37___ large and expensive. Computer networks didn’t work well. If one computer in the network ___38___ down, the whole network stopped. ___39___ a new network system（系統(tǒng)）had to be set up. It should be ___40___ to be used by many different computers. If part of the network was not working, ___41___ could be sent through another part. In this way computer network system would keep on ___42___ all the time.
At first the Internet was only used by the government, but in the early 1970s, universities, hospitals and banks were allowed to use it too. However, computers were still very expensive and the Internet was difficult to use. By the start of the 1990s, computers became cheaper and ___43___ to use. Scientists had also developed software that made “surfing”（瀏覽）the Internet more convenient.
Today it is easy to get on-line and it is said that millions of people use the Internet every day. ___44___ e-mail is more and more popular among students. The Internet has now become one of ___45___ parts of people’s life.
小題1:
A．surpriseB．surprisingC．surprisedD．surprises
小題2:
A．isB．a(chǎn)reC．wasD．were
小題3:
A．breakB．breaksC．brokeD．would break
小題4:
A．BecauseB．SoC．ButD．However
小題5:
A．good enoughB．well enoughC．enough goodD．enough well
小題6:
A．informationB．informationsC．a(chǎn)n informationD．the informations
小題7:
A．workB．to workC．workingD．worked
小題8:
A．easyB．easilyC．more easilyD．easier
小題9:
A．SendB．SendingC．To be sentD．Sent
小題10:
A．importantB．more importantC．most importantD．the most important

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解


American Classroom Rules
1. If the teacher asks a question, you should give an answer. If you do not understand the question, you should put up your hand and ask the teacher to repeat the question. If you don’t know the answer , it’s all right to tell the teacher that you don’t know . Then he or she knows what you need to learn.
2. There is no excuse for not doing your homework. If you can not go to school, you should call your teacher or your classmate and ask for the homework. It is your responsibility to find out what homework you have missed. It is not the teacher’s job to remind you of missed homework.
3. You must not be absent(缺席) on a test day. If you are badly ill, call and let the teacher know you will not be there for the test. If your teacher allows you to take a makeup , you should take the test within one or two days after you return to class. Bad illness is the only reason for missing a test.
4. Be on time! It’s not polite to be late. Also, it bothers other students. If you must come in late, be sure to do it quietly. Have your books out of your bag before you come into the classroom. Then go to your seat and sit quietly. In the US, it is not necessary to knock at the door before you come into the classroom.
小題1: If you can not go to school,          .
A． the teacher will remind you of the homework
B． the teacher will call you what your homework is
C． you should find out what your homework is
D． you don’t have to do your homework
小題2:. If you are badly ill,          .
A．you can’t be absent on a test day
B．you should take the test within one or two days
C．you should let your teacher know that you will be there for the test
D．you can miss the test
小題3:. In the US ,           if you are late.
A． it’s all right to come into the classroom within knocking at the door
B． take your books out of your bag after you come into the classroom
C． it’s not necessary to keep quiet when you enter the classroom
D． it’s not polite to knock at the door
小題4: The underline word “makeup” in the 3rd paragraph means          .
A．化妝B．編造C．組成D．補(bǔ)考
小題5:. The main idea of the passage is          .
A．that you should answer the teacher’s questions in class
B．that you have the responsibility to do your homework
C．the rules you should follow as an American student
D．that it’s polite to be on time for class

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解

Now, there is a new-type school in New York, which has no everyday lessons, no class teachers and even no school buildings. It is called “City-as-School”. The name just means the city itself is the place where students learn their lessons. They are from the age of 15 to 18. The students choose areas of work which interest them. Then they help to do that work. One girl spends her week in a government office helping the public with problems like housing. Then she goes to help in a theatre for a day and she spends a week for first-year courses at college.
Well, students have to pass Maths and science exams before they enter the “school”. These subjects are not easy to provide in“City-as-School”. Teachers watch the progress of the students. The success rate (比率) is high. 80% of the students go to college after the “City-as-School”.
The students like the duty of their work. They have the sense of purpose. They know a lot about different kinds of work in the city. One of the students, Lizette Martinez, writes “ I want to say that I do not know where I would be right now if I had never become part of City-as-School. Leaving my regular high school and going to City-as-School was the best decision I have ever made. The way the school works to get you to go out there and learn different fields instead of sitting in a classroom is wonderful. For all those who are in between school and dropping out, go to CAS and it will change your life forever.”
City-as-School High School is the nation’s leading (引導(dǎo)) external (外部地) learning or experiential (來(lái)自經(jīng)驗(yàn)的) learning model for high school students.
小題1:What can we learn about“City-as-School”?
A．It has no teachers.
B．It has no school buildings.
C．It has only girl students.
D．It is the only school in the city.
小題2:What do students do in“City-as-School”most of the time?
A．They do whatever they like.
B．They learn Maths and Science.
C．They help with work in a certain area.
D．They learn all the college courses.
小題3:According to the passage,“City-as–School” can help _________.
A．a(chǎn)ll the students go to college
B．students forget the duty of their work
C．students earn much money while studying
D．students learn a lot about different kinds of work
小題4:What is the best title for the passage?
A．A New CityB．A New School
C．A New-type SchoolD．A Girl in New York

查看答案和解析>>

同步練習(xí)冊(cè)答案