Travel is exciting and summer is a busy period for holiday travel. Many people will travel great distances in airplanes, cars or other vehicles. Experts say people should know about other health problems that can strike when traveling by air.
One of these is a condition called hypoxia (缺氧癥). It results from a lack of oxygen to the brain. Experts say the body begins losing oxygen minutes after an airplane leaves the ground. The air pressure in a plane during flight is lower than at sea level. This makes it more difficult for the body to effectively use the same amount of oxygen as it would on the ground. Fewer oxygen molecules （分子） cross the tissues (組織) in the lungs and reach the bloodstream.
The result is a five to twenty percent drop in the amount of oxygen in the blood. This reduces the amount of oxygen that reaches the organs of the body.
One effect of this lack of oxygen to the brain is a headache. When this happens, the heart attempts to fix the situation by beating harder and faster. This can make the traveler feel tired.
These signs of hypoxia are not dangerous in a healthy person. But a drop in oxygen level can cause a health emergency in people with heart or lung problems. They might lose consciousness or even suffer a heart attack.
Experts say that smoking cigarettes and drinking alcoholic liquids also reduce the body’s ability to use oxygen. So they suggest that people not drink alcohol or smoke cigarettes either before or during a flight. They also say persons with heart or lung problems should seek advice from their doctors before flying.
小題1:The author writes the passage mainly to ___.
A．warn people in airplanes of possible dangers
B．offer some advice on avoiding health problems
C．explain the causes and effects of hypoxia
D．a(chǎn)dvise people not to smoke or drink alcohol
小題2:According to the passage, what leads to hypoxia?
A．The brain lacks enough oxygen.
B．The air pressure in a plane is too high
C．Our body needs less oxygen during takeoff.
D．The bloodstream contains no oxygen molecules.
小題3:The underlined part “fix the situation” means “___”.
A．use more oxygen it needs
B．increase the air pressure
C．reduce the amount of blood
D．bump more blood to the brain
小題4:Why should passengers not smoke or drink before flying?
A．They weaken the body’s ability to use oxygen.
B．Smoking may pollute the air inside the airplane.
C．Drinking alcohol may raise one’s blood pressure.
D．Drinking is forbidden at the airport.
小題5:Do you think which the following title is the best title for this passage?
A．Tralling
B．how to travel
C．some suggestions about on the plane while travelling
D．the causes and effects of hypoxia

小題1:C
小題2:A
小題3:D
小題4:A
小題5:D
文章講述的是關(guān)于坐飛機(jī)旅行時(shí)會(huì)出現(xiàn)的缺氧癥的原因和造成的后果。
小題1:推理判斷題，根據(jù)第一段的Experts say people should know about other health problems that can strike when traveling by air可知，文章是向讀者解釋缺氧癥的原因和后果。
小題2:事實(shí)細(xì)節(jié)題，根據(jù)第二段It results from a lack of oxygen to the brain可知，是由于大腦缺氧導(dǎo)致
小題3:推理判斷題，根據(jù)第三段內(nèi)容可知，解決這種情況指的是給大腦提供更多的血液。
小題4:事實(shí)細(xì)節(jié)題，根據(jù)最后一段Experts say that smoking cigarettes and drinking alcoholic liquids also reduce the body’s ability to use oxygen可知，
小題5:主旨大意題，文章講述的是關(guān)于坐飛機(jī)旅行時(shí)會(huì)出現(xiàn)的缺氧癥的原因和造成的后果
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

When the TV viewer turns on his set, what sort of programs does he have to choose from? You might think there would be more programs devoted to entertainment than to anything else, but that’s not the case. In most countries, fewer than 20% of broadcasting hours are devoted to entertainment. U.S. figures are high----34.8% , and the unloving Canadians are even higher with 44%. Except Canada and Italy, all countries give more broadcasting time to education than to either information (news , documentaries and so on) or entertainment programs. Of course, few educational broadcasts take place during peak viewing times. In Japan though , more than 60%of broadcasting time is taken up with education of one kind of anther----just another example of the businesslike Japanese philosophy. In the U.K., the figure is 56.4% . the Italians have fewer educational programs than anyone else. They don’t go in for entertainment either. Only about ten percent of viewing time is devoted to dramas and serials, quiz shows, music, sports etc. You will find more news information programs on Italian TV than anything else. That’s understandable in a country experiencing social and political changes. Italians rely on TV to tell them what’s going on---and events are happening almost too fast to follow. The percentage of time the U.S. devoted to news and documentary programs is much smaller. After education, most TV time is given to entertainment. Many of these programs are shown around the world.
小題1:Based on this passage, the greatest percentage of TV broadcasting hours to educational is in __.
A．JapanB．ItalyC．CanadaD．the United States
小題2:More news information programs are broadcast on Italian TV than anywhere else because the Italians ___.
A．a(chǎn)re interested in what is happening in the world.
B．Like to follow the changes that are going on in their social life
C．Prefer to learn news information on TV rather than in newspapers
D．Expect TV to tell them the latest news about what is going on in their country
小題3: So far as the broadcasting hours devoted to entertainment , which of the following is true?
A．The Japanese figure is the highest in the world.
B．The U.S. figure is smaller than the U. K. figure
C．The U.K. figure is second to the Japanese figure
D．The Canadian figure is higher than that of any other country.
小題4:In the United States, ____.
A．TV programs are shown for world audience to watch
B．Most of TV broadcasting hours are give to entertainment
C．Educational programs are shown during peak viewing times
D．TV broadcasting hours devoted to education are more than those devoted to entertainment

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Although the United States covers so much land and the land produces far more food than the present population needs，its people are by now almost entirely an urban society. Less than a tenth of the people are engaged in agriculture and forestry(林業(yè)), and most of the rest live in or around towns，small and large．Here the traditional picture is changing: every small town may still be very like other small towns，and the typical small town may represent a widely accepted view of the country，but most Americans do not live in small towns any more. Half the population now lives in some thirty metropolitan areas(1arge cities with their suburbs, of more than a million people each—a larger proportion than in Germany or England，let alone France). The statistics(統(tǒng)計(jì))of urban and rural population should be treated with caution because so many people who live in areas classified as rural travel by car to work in a nearby town each day. As the rush to live out of town continues，rural areas within reach of towns are gradually filled with houses, so that it is hard to say at what moment a piece of country becomes a suburb. But more and more the typical American lives in a metropolitan rather than a small town environment．
小題1:If now America has 250 million people．how many of them are engaged in agriculture and forestry? 
A．About 25 million
B．More than 25 million
C．Less than 25 million
D．Less than 225 million
小題2:Which of the following four countries has the smallest proportion of people living in metropolitan areas?
A．United StatesB．GermanyC．FranceD．England
小題3:What’s the meaning of the word“metropolitan”in the middle of the passage?
A．Of a large city with its suburbsB．Of small and large towns
C．Of urban areasD．Of rural areas

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Recently a Beijing father sent in a question at an Internet forum (論壇) asking what "PK" meant.
"My family has been watching the 'Super Girl' singing competition TV programme. My little daughter asked me what 'PK' meant, but I had no idea," explained the puzzled father.
To a lot of Chinese young people who have been playing games online, it is impossible not to know this term. In such Internet games, "PK" is short for "Player Kill", in which two players fight until one ends the life of the other.
In the case of the "Super Girl" singing competition, "PK" was used to refer to the stage where two singers have to compete with each other for only one chance to go up in competition ranking.
Like this father, Chinese teachers at high schools have also been finding their students' compositions using Internet jargons which are difficult to understand. A high school teacher from Tianjin asked her students to write compositions with simple language, but they came up with a lot of Internet jargons that she didn't understand.
"My 'GG' came back this summer from college. He told me I've grown up to be a 'PLMM'. I loved to 'FB' with him together; he always took me to the 'KPM'," went one composition.
"GG" means Ge Ge (Chinese pinyin for brother). "PLMM" refers to Piao Liang Mei Mei (beautiful girl). "FB" means Fu Bai (corruption). "KPM" is short for KFC, Pizza Hut and McDonald's.
Some specialists welcome Internet jargons as a new development in language.
If you do not even know what a Kong Long (dinosaur, referring to an ugly looking female) or a Qing Wa (frog, referring to an ugly looking male) is, you will possibly be regarded as a Cai Niao!
小題1:By writing the article, the writer tries to  ________ .
A．explain some Internet language
B．suggest common Internet language
C．laugh at the Beijing father
D．draw our attention to Internet language
小題2:What does the writer think about the term "PK"?
A．Fathers can't possibly know it.
B．The daughter should understand it.
C．Online game players may know it.
D．"Super Girl" shouldn't have used it.
小題3:The examples of the Beijing father and the Tianjin teacher are used to show that Internet jargons ________ .
A．a(chǎn)re used not only online
B．can be understood very well
C．a(chǎn)re welcomed by all the people
D．cause trouble to our mother tongue
小題4:The underlined word "jargons" means " ________ " in Chinese.
A．行話B．粗口C．歌詞D．趨勢

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

A camera and a computer can “see” something that perhaps millions of pairs of eyes failed to see for 480 years: the Mona Lisa’s necklace. The discovery about the famous painting was made by an American physicist.
The Mona Lisa, painted by the Italian, Leonardo da Vinci, has been on show for many years in Paris. Now a row of white spots on the neck have been “seen”. They are said to be the remains (痕跡) of a necklace which the artist later painted over.
The painting will be examined further by using infrared scanning (紅外線掃描) techniques. Laser (激光) technology can be used to show what lies directly under the surface of the finished work, too. This will help us to understand how the artist drew the picture: Did he begin with a quick-made drawing or have second thoughts as he painted the picture?
This kind of knowledge will show us the famous artist at work. It may also help to explain Mona Lisa’s smile, which has puzzled art lovers for centuries.
小題1:This passage is mainly about ______.
A．the famous artist Leonardo da Vinci
B．a(chǎn)n American physicist’s discovery
C．further researches on the Mona Lisa
D．The uses of modern technology
小題2:The Mona Lisa is ______.
A．a(chǎn) famous artist B．a(chǎn) famous painting
C．a(chǎn) smiling woman D．a(chǎn) lost necklace
小題3:In this passage, “the Mona Lisa’s lost necklace” suggests that ______.
A．Mona Lisa once wore a necklace
B．someone stole the necklace from the Mona Lisa
C．the artist did not keep the necklace he had painted on the neck
D．the artist had a necklace stolen while working on the painting
小題4:According to the passage, the white spots on Mona Lisa’s neck ______.
A．a(chǎn)re still invisible to visitors
B．have turned into a necklace
C．have already appeared before visitors
D．a(chǎn)re looking more and more like a necklace
小題5:The painting will be examined further so that people may know more about ______.
A．Mona Lisa and her smile
B．the time when it was finished
C．infrared scanning and laser
D．this art work and the artist

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

URBANA, ILL. (AP)--Mike dropped out of college to support his pregnant(懷孕的) girlfriend and now works as a manager of a trucking company, Lynn graduated with honors from Harvard University and was hired as a lawyer with a top law firm in a major city. What do these two people have in common? Ten years ago they were both high school valedictorians (致告別辭者).
A University of Illinois study follows the lives of 81 valedictorians and salutatorians (致詞的學(xué)生代表) who graduated a decade ago from public and private high schools in the state.
Tales of Success and Failure
The study found tales of success and failure. The research on 46 women and 35 men found that some were doctors and scientists, one was a drug addict, another was a waitress with emotional problems.
"There is a popular idea about people who do well in school doing well in life," said Terry Denny, professor of education. Denny conducted the study with Karen Arnold, a former graduate student of Denny' s who is now a professor at Boston College. Denny and Arnold contacted the 81 students before graduation, and then followed up with interviews nearly every other year. They also sent them questionnaires in the mail.
Varied Careers
One-third of the students are lawyers, or have a doctorate. Nineteen are in business and 15 are engineers or computer scientists. Others include a farmer, a stock broker, and an aerobics instructor.
Arnold says many of the students have only average positions in the work world and that "most are not headed for greatness in their careers." Denny, however, says that it is too early to make such predictions. "Who expects someone to be on the Supreme Court at the age of 28 or to be the discoverer of an important scientific invention right after college?" he said. "These students are just getting started in life. They are just beginning to find out what life is all about."
小題1:What can we conclude from Paragraph 1?
A．Mike got married before he went to college.
B．Lynn was honored by a law firm in the city.
C．Mike was not so lucky as Lynn after graduating from college.
D．Mike and Lynn both graduated first in their high school class.
小題2:According to the article Denny is probably older than Arnold because      .
A．Denny was her professor
B．Arnold did well at school.
C．Denny interviewed some students
D．Arnold helped Denny in the research
小題3:What is probably the best title for the article?
A．Successful Careers for College Graduates
B．Success in Education Predicts Success in Later Life
C．High School Honors Not Always Key to Life Success
D．A study on Successful Jobs and College Graduates
小題4:Who probably wrote this article?
A．College graduatesB．Reporters
C．Professors and researchers D．Teachers

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解


How much do you want to pay for a CD by your favorite singer Jay Chou? Five Yuan for a pirated(盜版的) one, or more for a real one? Wang Ye, 14, said she would like the real one although the pirated one is cheaper.” A real one is worth keeping for years.” said the girl from No.1 middle school in Wu Han, Anhui. “Real CDs always sound better to me.”
What can we do? People want to do more to help those like Wang to get real CDs.
This week the International Federation of the Phonographic Industry asked many countries to act against piracy(盜版行為).
In many places in China, the government is checking audio and video products. Pirated ones are broken into pieces.
Piracy is in your daily life. Don’t believe it? A study by 21st Century Teens found that more than 75 percent of juniors had listened to pirated music. They say this is because pirated products are usually much cheaper than the real ones.
Why are real CDs so expensive? When a music company makes music, it needs to pay the song writers and singers. It costs a lot of money! This makes the price of the CDs go up. Piracy like stealing. People who make pirated copies of CDs take away the writers’ and singers’ work without paying them. They even don’t ask them if they can.
So next time you’d better keep your eyes brightened when you see cheap CDs. Remember you’re helping someone to do something wrong if you buy them.
How do you know what’s real.
Already made up your mind to buy real ones? Well, you should get to know what real CDs look like. A real CD has the name and trademark(商標(biāo)) of the music company on the cover. The company’s address, telephone number and fax number are on it.
If you open the CD box you'll see the singer's name and the album title. Most important of all, a real CD has a number from the IFPI on it.
But people who make pirated CDs only need the real CD and disks to copy them. That’s why some CDs are only five Yuan, but some many sell for 150 Yuan.
小題1:Real CDs are more expensive because ______.
A．it takes longer to make them
B．more people are needed to make them
C．a(chǎn) lot of money is paid to singers and writers.
D．better ways are used to make them
小題2:Buying pirated CDs is just like _______.
A．stealing
B．robbing
C．helping someone to do something wrong
D．helping someone
小題3:From the passage we get to know that some pirated company are_______.
A．moved away B．doing something wrong C．broken D．made smaller

查看答案和解析>>

科目：高中英語 來源：不詳 題型：完形填空


You are mistaken if you think all Chinese people speak in the same way. Have you ever seen a person from Shanghai try talking to 1________ from Guangzhou? It is quite likely 2________ both of them may feel puzzled! The Chinese language, 3________ a whole, uses the same set of characters, but even the same characters can have 4________ pronunciations. That is 5_______ it is difficult for people to understand each other. Luckily, the widespread use of Putonghua in China has made a great contribution 6________ people’s communication, though people from different areas tend to speak with various accents.
People in Northern Europe are much luckier. Even though people from Sweden, Denmark and Norway have their own official languages, it is very convenient for them to communicate with one another. Do you know 7______? That is because their languages are quite similar, though not 8________ small distinctions. Thus, they can communicate easily in their mother tongues.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Australia －a huge island continent that lies to the south of Asia．Australia－more than two hundred years old, a nation that is still growing．
Its big cities lie on the southeast coast, this is where most Australians live．Australians prefer to own their own houses, though some live in apartments．Australians are a suburban people．The suburbs surround the cities for many miles, and so efficient transport is of great importance．As the economy grows, so do its industries- a higher level of production, a wider range of products．
The Australian works hard, but he likes his leisure．The climate makes outdoor activities the most popular．
Canberra, the capital of Australia, is a planned modem city located inland．Australia is governed by a parliamentary democracy．The representatives of other countries have their embassies here．Australia wants to strengthen relations with her neighbors．
Australia is a strange land, a land of vast expanses- fertile valleys, snow fields and deserts- also a land with unique animal, many that can not be found on any other continent in the world today．
Much of the continent is dry, but man has utilized the land, made it productive, with its tools, with its technology．This is the driest continent of all, and water is a precious possession, more precious than all other natural resources．Large dams are built to collect the water, there to irrigate the fields of pastures and crops． But Australia is changing．The land of wool and wheat is now a land of large-scale industry and mining．The costs of developing the new mineral discoveries are enormous, but the rewards are great too．
Australia — a young and developing nation．Australia — a nation that wants to communicate with its neighbors．
小題1:Australia is an island located ______ of Asia and its big cities lie ____ of the coast．
A．to the south; on the southeast
B．to the north; on the southwest
C．to the east; on the northeast
D．to the east; on the southwest
小題2:We can infer from the passage that the Australian likes outdoor activities for the _____ climate．
A．dull and wet
B．fine and shiny
C．gloomy and rainy
D．wet and cold
小題3:____ is the most precious source in Australia．
A．Mineral resourceB．AnimalC．DesertD．Water
小題4:Which of the following statements about Australia is wrong?
A．Australians are a suburban people
B．Australia is governed by a parliamentary democracy．
C．Australia prefers to live in the downtown of big cities．
D．Wool and wheat used to be the main products of Australia．

查看答案和解析>>

同步練習(xí)冊(cè)答案