The world is filled with many interesting sounds. Some are very pleasant to hear; others are unpleasant to our ears. In a day, you probably hear hundreds of different sounds.
All sounds are different. Some may be soft; others may be loud. Some sounds are high; others are low.
Some sounds are useful. Without sound we cannot talk or listen to one another. The ringing alarm clock (鬧鐘)makes people wake up. The hooting of a horn (喇叭聲) on the road warns careless people of danger.
We make sounds by making things move to and fro(來回地). This to-and-fro movement is called vibration (振動(dòng)). It means moving up and down or forwards(向前地) and backwards(向后的) very fast. This makes sound waves(波).
We can make sounds in many ways, for example, by shouting, clapping our hands and striking the table. We can make sounds only by making things vibrate. We can talk because we can make our vocal cords (聲帶) vibrate. Our vocal cords are in a sound box or voice box. Two vocal cords vibrate when our lungs(肺) force the air through them.
小題1:We can make sounds ______.
A．by making things still
B．by making things vibrate
C．by making things jump up and down
D．by changing the positions of things
小題2: Some sounds are useful because ______.
A．they can wake people up
B．they can warn people to be careful when they are crossing the road
C．they make it possible for people to talk or listen to each other
D．a(chǎn)ll of the above
小題3:When the air is through our vocal cords, it can make them ______.
A．vibrateB．breathe the air
C．talk to each otherD．move forward and backward
小題4:Sounds are different because ______.
A．different sounds have different vibrations
B．different sounds have different sound waves
C．different sounds have different vocal cords
D．both A and B

小題1:B
小題1:D
小題1:A
小題1:D
略
練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語 來源：不詳 題型：閱讀理解

DJs (disc jockeys) are the people who play and present music on the radio, or in nightclub. A VJ (video jockey) is a person who introduces music videos on television.
VJs were first seen on television in the early 1980s when MTV went on the air. As MTV caught on, and the audience for music videos expanded, a variety of other music video channels started broadcasting. In addition to rock music, there were channels for people who were into alternative kinds of music, such as country music, light rock, and R & B, and all of these channels needed VJs. By the 1990s, international music video channels like Channel V in Asia and VIVA in Europe had started.
The VJs for the new international stations had to be chosen carefully. Although some VJs did shows focused on small audiences and showed mostly local content, other VJs presented shows for international viewers. These VJs, and the material they presented, needed to be popular in several different cultures.
One successful international VJ in Asia is Asha Gill. She is from Malaysia, but parents and grandparents are from India, France, and England. She speaks three languages and has fans across Asia, from Japan to the United Arab Emirates.
Another VJ who has made a big hit in Asia is Lili. She is actually a computer-animated VJ on MTV Asia. An actress wearing special computer equipment makes Lili move like a puppet. The actress also talks for Lili, and her shows can be seen in five languages.
When asked what makes a good video jockey, many successful VJs have given similar answers. To be a good VJ you need to know a lot about music, you need to be funny, and you can’t be shy.
小題1:What is the reading mainly about?
A．how to become a VJB．the most popular VJ today
C．the differences between DJs and VJsD．some general information about VJs
小題2:What kind of music did the first VJ probably introduce?
A．classicalB．rhythm and blues C．rock and popD．country
小題3:What do Channel V and VIVA have in common?
A．They are both owned by MTV.
B．They are music video channels in Asia.
C．They do not use VJs to introduce the music.
D．They have viewers in more than one country.
小題4:Which is NOT true about Asha Gill?
A．She speaks more than one language.B．Her family were all born in Malaysia.
C．She’s popular in quite a lot of Asian countries.D．She is a successful VJ.
小題5: Which of the following does the passage NOT mention as being important for someone who wants to be a VJ?
A．speak many different languagesB．listen to a lot of music
C．talk easily with different peopleD．being able to make people laugh

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Submission Guidelines
Before sending us a manuscript（稿件）, look through recent issues（刊物）of the Post to get an idea of the range and style of articles we publish. You will discover that our focus has broadened to include well-researched, timely and informative articles on finance, home improvement, travel, humor, and many other fields.
The Post’s goal is to remain unique, with content that provides additional understandings on the ever-evolving American scene.
In addition to feature-length（專題長(zhǎng)度的）articles, the Post buys anecdotes, cartoons, and photos. Payment ranges from $25 to $400.
Our nonfiction needs include how-to, useful articles on gardening, pet care and training, financial planning, and subjects of interest to a 45-plus, home-loving readership. For nonfiction articles, indicate any special qualifications you have for writing about the subject, especially scientific material. Include one or two published pieces with your article. We prefer typed articles between 1000 and 2000 words in length. We encourage you to send both printed and online versions.
We also welcome new fiction. A light, humorous touch is appreciated. We are always in need of straight humor articles. Make us laugh , and we’ll buy it.
Feature articles average about 1000 to 2000 words. We like positive, fresh angles to Post articles, and we ask that they be thoroughly researched.
We normally respond to article submissions within six weeks. You are free to submit the article elsewhere at the same time.
Please submit all articles to Features Editor, The Saturday Evening Post, 1100 Waterway Boulevard, Indianapolis, IN 46202, (317)634-1100.
小題1:
Before sending a manuscript to the Post, a contributor is advised to       .
A．get a better understanding of American issues
B．find out the range of the articles in the post
C．increase his knowledge in many fields
D．broaden his research focus
小題2:
to submit nonfiction articles，a contributor must_____.
A．provide his special qualification
B．be a regular reader of the post
C．produce printed version
D．be over 45 year old
小題3:
from the passage we can learn that the post
A．a(chǎn)llows article submission within six weeks
B．favor science articles within 2，000 words
C．have a huge demand for humorous works
D．prefers nonfiction to fiction article

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

There are many festivals in Argentina during the year. Therefore, you can enjoy the different interesting festivals when traveling there. First of all, we should talk about the Tango(探戈舞) Festival in Argentina, which is held in the capital of this country — Buenos Aires, from February to March. You ought to know that Argentina is the home of tango, so Argentineans admire this dance very much. Even if you cannot dance perfectly, you should join the people and try to perform this dance.
The next festival in Argentina is Open Polo(馬球) Tournament. You should go to Palermo to see this festival in Argentina. This festival is held every year and is the most important polo tournament in Argentina. This kind of sport is considered the most important in Argentina. Attending this festival in Argentina, you will be able to communicate with different people, admire the fascinating competition between the teams of different countries, such as Argentina, England, Australia, as well as the US. This festival in Argentina is usually held between November and December every year. So don’t miss the opportunity if you travel to Argentina at this time.
The other festival in Argentina is the Semana Musical Llao Llao. This is a festival of classical music. The festival was created in 1993 and is held at the Llao Llao Hotel, near Bariloche. The festival is held yearly in October. So if you admire this kind of music, you should travel to Argentina in October. There are also many carnivals in October. There are also many carnivals in Argentina in summer. Of course, it’s impossible to put everything about festivals in Argentina into just one article. We hope that you have found this article interesting and eye-catching.
小題1:.
What would be the best title for the passage?
A．Travel to ArgentinaB．Entertainments in Argentina
C．Festivals in ArgentinaD．A brief introduction to Argentina
小題2:.
From the passage, we know that the Tango Festival   .
A．is organized by the governmentB．is held in summer
C．welcomes everyone to take part inD．holds parties for different dances
小題3:.
Which of the following is a sport festival?
A．The Semana Musical Llao Llao.B．Open Polo Tournament.
C．The Tango Festival.D．Argentina Carnivals.
小題4:.
If Tom wants to enjoy a classical music event in Argentina, he should visit   .
A．Buenos Aires in springB．Palermo in April
C．Bariloche in OctoberD．Palermo in winter

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Researchers have found more evidence that suggests a relationship between races and rates(率) of lung cancer among smokers. A new study shows that black people and Native Hawaiians are more likely to develop lung cancer from smoking. It compared their risk to whites, Japanese-Americans and Latinos.
Researchers at the University of Southern California and the University of Hawaii did the new study. The New England Journal of Medicine published the findings. The eight-year research studied more than 180,000 people. They included present and former smokers and people who never smoked. Almost 2.000 people in the study developed lung cancer.
Researchers say genetics(遺傳學(xué)) might help explain the racial and ethnic（種族的） differences. There could be differences in how people's bodies react to smoke. But environmental influences, including the way people smoke, could also make a difference.
African-Americans and Latinos in the study are reported smoking the fewest cigarettes per day. Whites are the heaviest smokers. But the scientists point out that blacks have been reported to breathe cigarette smoke more deeply than white smokers. This could fill their lungs with more of the chemicals in tobacco that cause cancer.
Scientists know that some diseases effect different groups differently. And some drug companies have begun to develop racially targeted(針對(duì)) medicines. Last June, the United States Food and Drug Administration approved a drug designed to treat heart failure in black patients. The name is BiDil. The agency called it "a step toward the promise of personalized medicine."
小題1:Which of the following orders is from higher to lower risk of having lung cancer?
A．Whites—Native HawaiiansB．Africans—Americans—Latinos
C．Asians—Native HawaiiansD．Africans—Americans—Native Hawaiians
小題2:Researchers agree that it is      that may probably determine black people’s risk of lung cancer.
A．the larger amount of smoking than white people
B．the living style or habit of the blacks
C．the depth of cigarette smoke into their lungs
D．the physical strength to react to cigarette smoke
小題3:People in the new study are made up of          .
A．heavy smokers in AmericaB．the black and white people
C．the Asians and HawaiiansD．smokers and non-smokers
小題4:The production of BiDil referred to in the last paragraph is to      .
A．explain different races react to some diseases differently
B．tell the readers that racial differences exist in smokers
C．show a big step people have taken in the medicine area
D．support the idea that it is easy for blacks to have cancers
小題5:Which of the following statements is TRUE according to the author?
A．The way of smoking may increase the risk of lung cancer.
B．Race has nothing to do with the risk of having a lung cancer.
C．The research was started by the New England Journal of Medicine.
D．The risk of lung cancer lies I how much a person smokes.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

A town in Oxfordshire has become the first in the UK to have biomethane(生物甲烷)gas from human waste piped to their homes for gas central heating and cooking．
Up to 200 families in Didcot now receive the gas via the national gas power system. Head of energy and technology at British Gas，Martin Orrill，said customers wouldn’t notice any difference as the gas is purified to the highest standard and has no smell．The gas is produced at a sewage(污物) treatment works in Didcot．
The entire process takes only less than three weeks, with the sewage being collected and sent first to settlement tanks．The solid waste material is then fed into digesters, where anaerobic bacteria(厭氧菌)digest the sewage，with the aid of enzymes(酶)to speed up the process．The digestion process produces methane，which can be burned to drive machines(甲烷)to produce electricity，or can be purified and fed into the gas network and piped to homes and businesses. British Gas says supplying the gas rather than electricity is far more efficient since around two-thirds of the energy is lost in producing electricity.
Partners in the Didcot project，British Gas，Scotia Gas Network，and Thames Water，all hope to expand the process to other towns，and other companies such as Ecotricity and United Utilities have also announced biomethane projects being planned．One of these projects in Manchester could be supplying 500 homes with biomethane by mid next year. Another British Gas project in Suffolk will provide gas from digestion of brewery(啤酒廠)waste to around 235 families．
The Didcot project cost￡25 million and was influenced by promises of government aids aimed at encouraging companies to develop renewable technologies．An EU directive means the UK must ensure at least 15 percent of its energy is from renewable sources by 2020．
The UK produces about 1.73 million tons of sewage annually．If all sewage treatment works in the UK were fitted with the technology，they could supply gas for up to 350, 000 families.
小題1:.  Which of the following is TRUE of the biomethane gas?
A．it’s mainly made from rotting plantsB．It’s an environmentally friendly gas
C．Its production process is too longD．It’s easily recognized by customers
小題2:.  What is the function of the enzymes?   
A．To digest the solid waste materialB．To help get rid of anaerobic bacteria
C．To help purify the biomethane．D．To speed up the digestion process．
小題3:.  According to the passage，the biomethane gas had better be used        .
A．a(chǎn)s the power for vehiclesB．for heating and cooking
C．to produce electricityD．to drive a variety of machines
小題4:.  The last three paragraphs mainly show that        .
A．the UK government supports the biomethane projects
B．the biomethane projects are very costly
C．the biomethane projects still face many barriers
D．the biomethane projects are promising
小題5:. . What should the text belong to?
A．Computer scienceB．EngineeringC．EnergyD．Business

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

You may know your mother, but how well do you really know Mother’s Day? Cards, flowers, sales, TV specials, and a day off for someone who really deserves it ---- those are what probably come to mind for many people when they think of Mother’s Day. But there’s more to the story.
The earliest Mother’s Day celebrations were held during spring in ancient Greece. The celebrations honored Rhea, the Mother of the gods. During the 1600’s, England celebrated a day called Mothering Sunday. On this day even servants were given the day off to spend with their families. A mothering cake was even served with the family meal.
In the US, Mother’s Day began in 1872 when Julia Ward Howe, who wrote the words to the famous song The Battle Hymn of the Republic, suggested it as a day devoted to peace. But it didn’t really become popular until 1907 when Anna Jarvis stared a campaign to honor mothers. She believed that mothers could help people get over the pain they experienced during the Civil
War. The US isn’t alone in devoting a day to mothers. Many other countries including Denmark, Finland, Italy, Turkey, Australia, Japan, and Belgium also honor their mothers in May. Other countries honor their mothers at different times of the year.
Learning more about Mother’s Day and celebrating Mother’s Day are important, but probably not as important as understanding what your own mother, or grandmother, or aunt has really done for you. And that will certainly be appreciated more than one day in a year.
小題1:What is the passage mainly about?
A．The reason why people celebrate Mother’s Day.B．The ways people honor mothers.
C．The history of Mother’s Day.D．The great contribution of mothers.
小題2:Where was the earliest Mother’s Day celebrated?
A．In ancient Greece. B．In the US.C．In England. D．In Italy.
小題3:We can learn from the passage that _____.
A．Rhea is the mother of a king in ancient Greece
B．not all the countries celebrate Mother’s Day in May
C．only mothers were given a day off on Mothering Sunday
D．it was in 1872 that Mother’s Day really came into being
小題4:The last paragraph tells us that _____.
A．a(chǎn)ll the people should celebrate Mother’s Day
B．only mothers are honored on Mother’s Day
C．understanding mothers’ work is more important than just celebrating Mother’s Day
D．people should celebrate Mother’s Day every day

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

A green house is a building made of glass which is used for keeping warm when the outside temperature is low. In a similar way there are several gases in the atmosphere (mixture of gases that surround the earth) which trap the heat produced by the sun and prevent it from escaping. These gases are known as “greenhouse gases”. and the way in which they trap heat in the atmosphere is called the “greenhouse effect”. This is not simply air pollution. Most of the main greenhouse gases exist naturally in small amounts in our atmosphere, and without them the earth would be 30 degrees colder and human life would not exist. In other words, the greenhouse effect is a natural course which is to some degree helpful to us.
The problem is that in the last century and a half, we have been putting too many of these gases into the earth’s atmosphere by burning large quantities of coal and oil and by cutting down forest. The rapid increase in greenhouse gases is making the world warmer. The world’s temperature has already gone up by half a degree this century, and the sea level has risen by 10 centimetres. If the amount of carbon dioxide in the atmosphere doubles, there will probably be a rise in the earth’s temperature of between I and 4℃;. This may seem a small increase, but it would be enough to cause major changes in geography and agriculture. Large areas of the world would be flooded, and some areas would become dry and unable to produce crops. It is important, too, to consider that there may be a delay of about 30 years in the greenhouse effect. This means that we are probably experiencing only now the effect of the gases put into the atmosphere before the 1960s. Since then, our use of these gases has greatly increased.
小題1: According to the passage, we can know “greenhouse effect” means_______.  
A．the way in which gases are used for keeping plants warm
B．a(chǎn) natural course that is to a certain degree useful to us
C．the way “greenhouse gases” trap heat on the earth
D．the whole course in which greenhouse gases prevent heat
小題2: If there were no greenhouse effect,_______.
A．a(chǎn)ll plants would not grow on our planetB．soil would reduce the temperature by 30 degrees
C．man would breathe the cleaner airD．people couldn’t live in the earth
小題3: Which of the following is not true?
A．Burning too much coal and oil produces lots of greenhouse gases.
B．It has become warm on the earth now than in the past.
C．Gases put into the atmosphere now will affect the earth years later.
D．The temperature in a greenhouse is as high as that in the atmosphere.
小題4: Suppose the earth’s temperature rose by 3 degrees, _______. 
A．great harm will be done to mankindB．the sea level would go up by 10 centimeters
C．a(chǎn)ll the land in the world would be floodedD．crops would be unable to grow on the earth
小題5: This passage mainly deals with ________.
A．the concept (概念) and the harm of the greenhouseB．the relation between greenhouse gases and man
C．the concept and change of greenhouse effectD．the effect of the rise of the earth’s temperature

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

When you are curious about something, and want to know more about it, you can use the way of asking questions. Asking questions is the first step to make discoveries and find interesting answers. The steps below can guide you during the research.

Step 1 On a note card or piece of paper, write down the subject that you are interested in. Just get the main idea down. For example, you might write:

Discover more about dinosaurs.

Step 2 Next, stop and think for a moment about what you already know about your subject. List what you already know like the sentences below:

1. Dinosaurs lived long before human beings appeared.
2. Dinosaurs lived on the earth for more than 150 million years.
3. Some dinosaurs fed on plants, some on meat.

Step 3 What can you do with what you want to learn? By asking questions. On your paper, start writing down questions about the dinosaurs as you think of them:

1. What’s the best weather for dinosaurs to live in?
2. How many kinds of dinosaurs are there?
3. Have dinosaurs really disappeared?

Step 4 Armed with your list of questions, you can now go to the nearest library or computer to begin your research. As you learn more about your subject, you’ll probably discover some new questions.

For example, you might discover that dinosaurs disappeared about 65 million years ago. Why? What happened? Asking new questions can help you research your subject more widely.
The next time you find something interesting to research, take time to organize your thinking by asking good questions. And remember—learning more always bring more questions.
小題1:When you do some research, you should take the following steps:                .
①list what you want to know      ②choose a research subject
③list what you already know      ④discover new problems
A．①④③②B．②③①④C．③②④①D．④③①②
小題2:What does the underlined sentence “Armed with your list of questions” mean?
A．Putting your list of questions under your arm.
B．Discussing your questions with your classmates.
C．Writing down your list of questions.
D．Taking your list of questions with you.
小題3:According to the passage, which of the following is TRUE?
A．You can find all the answers online.
B．Learn more, and you’ll have no questions.
C．During the research, you may keep finding new questions.
D．Asking questions is the only way for research.
小題4:. The best title for this passage is              .
A．Discovering DinosaursB．Asking Good Questions
C．Finding SubjectsD．Having Interesting Answers

查看答案和解析>>

同步練習(xí)冊(cè)答案