The Antarctic Icecap is the largest supply of fresh water，representing nearly 2％of the world’s total of fresh and salt water. As can be seen from the table below, the amount of water in our atmosphere is over 10 times as much as the water in all the rivers taken together. The fresh water actually available for human use in lakes and rivers and the accessible ground water amount to only about one-third of 1％of the world’s total water supply.
 
Surface area(sq mi)
Volume(cu mi)
Percentage of total
Salt water
The oceans
139,500,000
317,000,000
97.2％
Inland    seas    and
saline lakes
270,000
25,000
0.008
Fresh water
Freshwater lakes
330,000
30,000
0.009
All rivers(average level)
－
300
0.0001
Antarctic Icecap
6,000,000
6,300,000
1.9
Arctic Icecap and glaciers
900,000
680,000
0. 21
Water in the atmosphere
197,000,000
3,100
0. 001
Ground water within half
a mile from surface
a mile from surface
－
 
1,000,000
 
0. 31
Deep-lying ground water
－
1,000,000
0. 31
Total (rounded)
－
326,000,000
100.00
小題1:What’s the best title of this passage?
A．Fresh Water in the WorldB．Water Supply of the World
C．Salt Water of the EarthD．Protection of the Water in the World
小題2:It can be seen from the table______.
A．humans will have to use sea water in the future
B．there is enough fresh water for man to use
C．Water in the atmosphere is the least
D．the sea water takes up 98％of the water on earth
小題3:The fresh water that humans can use is _________.
A．a(chǎn)bout 1,086,700 cu miB．a(chǎn)bout 6,300,000 cu mi
C．a(chǎn)bout 680,000 cu miD．a(chǎn)bout 2,000,000 cu mi
小題4:Where does the majority of fresh water exists?
A．In Arctic Icecap and glaciers.B．In Deep ground.
C．In the Antarctic Icecap.D．In the atmosphere.
小題5:What are the two places where equal amount of fresh water is stored?
A．Freshwater lakes and all rivers(average level)
B．Antarctic Icecap and water in the atmosphere
C．Ground water within half a mile from surface and Deep-lying ground water.
D．Deep-lying ground water and Arctic Icecap and glaciers
BDACC
小題1:B
小題2:D
小題3:A
小題4:C
小題5:C

試題分析：本文本文講述了世界水資源的分布情況，以及淡水和海水的具體的百分比情況，并詳細(xì)說明了各種水資源所占的比例等數(shù)據(jù)。
小題1:B 主旨大意題。本文講述了世界水資源的分布情況，以及淡水和海水的具體的百分比情況，故本文是關(guān)于世界水供應(yīng)的話題，B項正確。
小題2:D 細(xì)節(jié)題。根據(jù)表格3，4行說明海里的海水和內(nèi)陸湖泊的水一共占據(jù)了世界水資源的百分之98，故D項正確。
小題3:A 計算題。根據(jù)第一段最后2行The fresh water actually available for human use in lakes and rivers and the accessible ground water amount to only about one-third of 1％of the world’s total water說明可以飲用的淡水只占全世界水含量的one-third of 1％而全世界水含量是326,000,000，故大約有1,086,700。A項正確。
小題4:C 細(xì)節(jié)題。根據(jù)文章1,2行The Antarctic Icecap is the largest supply of fresh water，representing nearly 2％of the world’s total of fresh and salt water說明The Antarctic Icecap才是最大的淡水存在的地方，故C正確。
小題5:C 細(xì)節(jié)題。根據(jù)表格倒數(shù)2,3行的Ground water within half a mile from surface and Deep-lying ground water.的水量基本相同，故C項正確。
點評：本文本文講述了世界水資源的分布情況，以及淡水和海水的具體的百分比情況，并詳細(xì)說明了各種水資源所占的比例等數(shù)據(jù)�？疾榧�(xì)節(jié)題和計算題較多，要求考生認(rèn)真審題，結(jié)合題目和選項以及課文內(nèi)容作出準(zhǔn)確的計算和推理。
練習(xí)冊系列答案
相關(guān)習(xí)題

科目：高中英語 來源：不詳 題型：閱讀理解

Since the 1990s, education has been required for all South Africans from age seven to fifteen. Last December, the government announced that 70% of students passed their final examination to finish high school. In 2008, the pass rate was about 63%. There have been increases each year since then.
Professor Shireen Motala says basic education is no longer a problem in South Africa. Most children stay in school until they are about sixteen. The problem is that large numbers of them leave without completing high school.
Students take an examination known as the “matric”(高考) in Grade Twelve. Professor Motala says, “Less than half of the children who started school in 2000 sat for the matric last year. Many dropped out of school, so only around 45% took the matric. And the worry is where those students actually go.” Those who drop out have to compete with better educated people for jobs.
Educational researchers also point to another problem. South African schools do not produce enough students with the skills for higher education in maths and science. Many schools are not well-equipped. Children do not see laboratories, and, as a result, their science marks are not very good. They do not have libraries at school. Also, many teachers do not have the skills or training to do their jobs.
In South Africa, a number of teachers were poorly trained before. Secondly, teachers have been confused by the many educational reform efforts in the last fifteen years. Finally, language differences in the classroom have not got as much attention as they should, which is a huge problem. Subjects such as maths and science are taught in English starting at about the age of ten. But South Africa has eleven official languages.
South Africa’s minister of basic education promises a number of improvements. Angie Motshega says teacher development efforts will focus on subject and content knowledge, making sure that the correct teachers are in the correct jobs.
小題1:From the first paragraph we can learn that ______.
A．South Africans are badly in need of education
B．South African teenagers do very well at school
C．the South African government takes education seriously
D．South African teenagers have become more clever
小題2:What is the real concern of Shireen Motala?
A．Something is wrong with the country’s basic education system.
B．Most children have to find a job at an early age.
C．The final exam is too difficult for most children.
D．Most children cannot complete high school until they are 16.
小題3:South African students perform poorly in science for all of the following reasons, EXCEPT ______.
A．they don’t work hard enough
B．their schools do not have laboratories
C．they cannot get help from libraries
D．there are not enough skilled teachers
小題4:With which of the following would Shireen Motala most probably agree?
A．Schools should focus more on maths and science than any other subject.
B．More educational reforms should be carried out in South African schools.
C．The more teachers teach maths and science, the better marks students may get.
D．More attention should be paid to language differences in maths and science classes.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

In the computer age, most of us take a broadband（寬帶）Internet connection for granted. Whether cable or mobile broadband, today’s connections are many times faster than those in the early days. Videos play smoothly, complex websites load quickly, and files download much faster than ten years ago. And the files are much bigger too.
There’s a catch, of course: You have to live near enough to a major city to get broadband Internet. If you don’t, it’s slow dial-up access for you. And for those living really far out, there may be no Internet access at all.
Technology experts often talk about the “l(fā)ast mile” problem, which refers to the difficulty of bringing Internet access to remote locations. In cities and suburbs, it’s relatively easy to provide access for everyone. It is much more difficult to deliver access to those living far from cities, especially in developing countries. Internet service providers, for their part, have been reluctant to provide access to sparsely (稀疏地) populated areas. The handful of Internet users they would reach wouldn’t cover the expense.
But every year, technological advancements allow of more and more Internet users. Most broadband connections today run over existing cable TV and telephone lines although these technologies aren’t available everywhere.
Some companies have delivered the Internet over standard power lines. Advancements in cheaper, more efficient fiber optics cables (光纖電纜) promise to bring extremely fast Internet connections to more users.
Still, the “l(fā)ast mile” problem remains hard to deal with. There will always be somewhere that doesn’t have an affordable broadband connection. But someday that might not matter. If the rapid progress in cell phone technology is any indication (跡象), it may not be too long before an Internet connection simply follows you wherever you go.
小題1:The underlined part “a catch” (in Paragraph 2) probably means “_____”.
A．a(chǎn) rare challengeB．a(chǎn) desirable planC．a(chǎn)n efficient deviceD．a(chǎn) hidden problem
小題2:What can we know from the third paragraph?
A．Internet connection has not been popular in most cities.
B．Internet service providers care about rural（農(nóng)村的）customers.
C．Computer is popular in developing countries.
D．It is hard to bring Internet access to users in remote areas.
小題3:Paragraph 4 mainly tells us that technological advancements _____.
A．make TV and telephone available everywhere
B．bring great change to people’s everyday life
C．make it possible for more people to use the Internet
D．bring faster Internet connections to users
小題4:What may eventually settle the “l(fā)ast mile” problem?
A．The broadband connection’s getting faster.
B．More and more Internet users.
C．more and more Internet connections.
D．The rapid progress in cell phone technology.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Consult the page adapted from an English dictionary and do Questions 68～70.

小題1:Fill in the blank in the sentence “I can’t believe this is Daniel—he’s ______ since we last met! Much taller than the other boys of his age!”
A．shot upB．shot outC．shot throughD．shot down
小題2:When you are talking about unimportant things, we say you are ______.
A．shooting yourself in the foot
B．shooting your mouth off
C．shooting the breeze
D．shooting questions at somebody
小題3:Choose a word to complete the sentence “The ______, which killed a policeman and wounded a passer-by(路人), was reported to have lasted only 13 seconds.”
A．shooterB．shootC．shotD．shooting

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Throughout seafaring history, ships and sailors have been lost to storms, accidents and war. Until recently, most of these ships were weak wooden sailing vessel (船只), their skeletons(骨架) quickly eaten away by sea creatures. Now, large vessels made of steel float on the seas. Thousands of these huge ships have been lost in times of war and in times of peace.
The bones of great metal ships, unlike the wooden vessels of old, survive the destruction of the sea long enough to become home and harbor for underwater life of all kinds. Shipwrecks(殘骸) often provide the only hard surface and structure at the sandy bottom of the sea, something many sea creatures need.
The ship has been underwater for only five days. Its surface is still clean. Six weeks later, the wreck is covered with a slimy layer of algae(海藻), but it is still recognizable as a ship. Soon, animals that need to attach themselves to a hard surface, like the feather duster worms, make the wreck their home.
In warm waters, coral polyps(珊瑚蟲) settle on the wreck and begin the process of building a rock-like crust on the ship. Small fish are attracted on all of these creatures. Larger fish come to feed on these small fish that hide in the wreckage. Eventually, the largest animals are attracted to the rich life on the shipwreck.
Shipwrecks give us valuable information about how sea plants and animals develop. We know exactly how long this wreck has been under water and how long sea life has been growing on it. Yet even the strongest steel shipwreck will finally be destroyed by the flows of water. But long after this wreck has been broken apart, it will still act as a reef (礁石). Layer upon layer of sea life has formed a structure that is now more natural than artificial, and will remain an island of life under the sea.
小題1:Which of the following is NOT TRUE about shipwrecks?
A．Most ships in ancient times sank easily and become shipwrecks.
B．Shipwrecks, for scientists, are worth researching to get valuable information.
C．The skeletons of old wooden shipwrecks will exist for quite a long time.
D．Some sea animals tend to seek food on the shipwrecks.
小題2:The writer’s purpose in writing the article is to tell us_____.
A．the differences between the ancient vessels and the modern ones
B．how the ships become shipwrecks at sea
C．how coral polyps live on the wreck in warm waters
D．the value of studying shipwrecks at the bottom of the sea
小題3:Which of the following is closer to the underlined “crust”?
A．a(chǎn) hard outer coveringB．the skin of a rock
C．a(chǎn) hole in a shipD．a(chǎn) small house
小題4:What will happen to shipwrecks in the end?
A．They will be pulled out of the sea for research.
B．They are likely to disappear and form reefs.
C．They will become an island under the sea.
D．They will be like works of art.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Every year, British newspapers report on the stranger questions asked in Oxbridge (Oxford & Cambridge) interviews. Often, though, these questions are not as strange as they first seem. And they are all designed to give applicants (申請者) a chance to think.
Arriving for her first Oxford interview, my sister Jen saw that there was only one chair in the waiting room. On the chair was a large fork. Jen had heard about the strange things in Oxbridge interviews, and believed that this was a test. “What if they’re watching me?” she thought. “If I move the fork, it will show initiative (主動性); if I don’t move it, it will show that I can easily fit into new situations.” In the end, she sat uncomfortably on the edge of the chair!
Applicants must be prepared for the unexpected. Now it was Jen’s turn. She was handed a monkey skull (顱骨) and asked to talk about it. At first, this seemed unfair --- what could she say? But she soon calmed down, started thinking, and found that there was plenty to talk about.
Oxbridge interviews are designed to find out how you think, not just what you think. And there are no wrong answers. Jen learnt that, and she passed the interview. What advice does she give? “ Don’t be nervous, and be prepared for the unexpected!”
小題1:According to British newspapers, questions for Oxbridge applicants are very _____. 
A．unfairB．normalC．easyD．strange
小題2:On her first interview, Jen ____ after she entered the waiting room.
A．moved the forkB．sat down on the fork
C．sat down on the chairD．moved the chair
小題3:Jen learned that it was very important to _____ in order to pass the Oxbridge interviews.
A．make up new situationB．show how one thinks
C．describe what one hearsD．talk about various monkeys
小題4:The writer uses a(n) ____ to introduce how Oxbridge applicants are interviewed.
A．exampleB．guessC．experimentD．survey

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

閱讀下面短文并回答問題（請注意問題后的詞數(shù)要求）。
When your toothbrush is at the end of its days, don’t just throw it away, as a survey has revealed many other uses for an old toothbrush.
The survey was carried out by the Dental Health Foundation to promote National Smile Month and more than 1, 000 people participated in the survey. It found that more than four in every five people re-use their toothbrush for another purpose.
Four in ten people use an old toothbrush to brush bathroom tiles (瓷磚), and almost a third use it to clean kitchen appliances. More than a quarter of those questioned use old toothbrushes to clean jewellery, and roughly one in every five use them for shining shoes. Some other uses for toothbrushes include cleaning bikes, computer keyboards, toilet seats, fish tanks and finger nails.
The survey also found that the age of the owner can determine what happens to a toothbrush after it is not suitable to be used to brush teeth any more. People over 75 are three times more likely to re-use their toothbrush for a different purpose than those between the ages of 16 and 34 and twice more likely than those between 35 and 44.
Additionally,           to reuse their toothbrush for chores (日�，嵤�) and other uses than their male counterparts. Some women admitted to using their toothbrush to apply hair dye (染料)while some men said they used an old toothbrush to clean their dog’s teeth.
Chief Executive of the British Dental Health Foundation, Dr Nigel Carter, said, “We all should get through around four toothbrushes every year if we are to keep our oral health in great condition. Generally people don’t change their toothbrushes often enough, but there are still plenty of toothbrushes
lying around the house. Our survey has shown that people have realized that a toothbrush is of great value and has a role to play beyond its normal use.”
小題1:What would be the best title for the passage? (no more than 10 words)
                                                                                    
小題2:What does the underlined word “It” in Paragraph 2 probably refer to? (no more than 2 words)
                                                                                  
小題3:What percentage of people use old toothbrushes to shine their shoes? (no more than 4 words)
                                                                                   
小題4:Complete the following statement with proper words. (no more than 3 words)
The results of the survey also showed that whether a toothbrush is reused after it’s replaced can be determined by       the owner is.
小題5:Fill in the blank in Paragraph 5 with proper words. (no more than 5 words)
                                                                              

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

It was a cold evening and my daughter and I were walking up Broadway. I didn’t notice a guy sitting inside a cardboard box. But Nora did. She wasn’t even four, but she  36  at my coat and said, “That man’s cold. Daddy,  37  we take him home?”
I don’t remember my reply. But I do remember a sudden  38  feeling inside me. I had always been delighted at how much my daughter noticed in her  39 , whether it was  40  in flight or children playing. But now she was noticing  41  and beggary.
A few days later, I saw an article in the newspaper about volunteers who picked up a food package from a nearby school on a Sunday morning and  42  it to an elderly person. It was quick and easy. I  43  us up. Nora was  44  about it. She could understand the importance of food, so she could easily see how  45  our job was. When Sunday came, she was ready, but I had to  46  myself to leave the house. On the way to the school, I fought an urge to turn  47 . The Sunday paper and coffee were waiting at home. Why do this?  48 , we phoned the elderly person we’d been appointed. She  49  us right over.
The building was in a sad state. Facing us was a silver-haired woman in an old dress. She took the package and asked us to come in. Nora ran inside. I unwillingly followed. 50  inside, I saw that the department belonged to someone poor. Our hostess showed us some photos. Nora played and when it came time to say goodbye, we three hugged, I walked home in tears.
Professionals call such a(n)  51  “a volunteer opportunity”. They are opportunities, I’ve come to see. Where else but as volunteers do you have opportunity to do something  52  that’s good for others as well as for yourself? Nora and I regularly serve to needy people and  53  clothes for the homeless. Yet, as I’ve  54  her grow over these past four years, I still wonder—which of us has  55  more?
小題1:
A．pulledB．glancedC．wavedD．a(chǎn)imed
小題2:
A．would B．canC．needD．must
小題3:
A．general B．trueC．heavyD．curious
小題4:
A．a(chǎn)reaB．partC．eyesightD．world
小題5:
A．insects B．dogsC．a(chǎn)nimalsD．birds
小題6:
A．coldness B．illnessC．sufferingD．ignorance
小題7:
A．delivered B．returnedC．devotedD．posted
小題8:
A．held B．hurriedC．signedD．lined
小題9:
A．casual B．sorryC．a(chǎn)stonishedD．excited
小題10:
A．creativeB．valuableC．shockingD．simple
小題11:
A．warn B．stopC．a(chǎn)llowD．push
小題12:
A．backB．a(chǎn)wayC．upD．out
小題13:
A．ThereforeB．ObviouslyC．StillD．Also
小題14:
A．called B．promisedC．invitedD．helped
小題15:
A．AsB．OnceC．BecauseD．Though
小題16:
A．stayB．visitC．a(chǎn)dventureD．challenge
小題17:
A．fairB．famous C．difficultD．enjoyable
小題18:
A．collectB．make C．orderD．wear
小題19:
A．letB．madeC．watchedD．noticed
小題20:
A．improvedB．benefited C．triedD．seized

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

A new study says one part of the human brain may become smaller as the result of a condition known as jet lag. Jet lag results from flying long distances in an airplane. People with jet lag may feel extremely tired for several days. They may also have problems thinking clearly and remembering.
Recently a researcher at the University of Bristol in Britain reported the findings of his jet lag study, which involved twenty young women who worked for international airlines. They had served passengers on airplanes for five years. These flight attendants flew across many countries and at least seven time zones. In the study, the flight attendants had different amounts of time to recover from jet lag. Half the women spent five days or fewer in their home areas between long flights. The other half spent more than fourteen days in their home areas.
The researcher took some saliva from the women”s mouths to measure levels of a hormone(荷爾蒙) that increases during stress(緊張). He tested them to see if they could remember where black spots appeared on a computer screen. And he took pictures of their brains to measure the size of the brain”s temporal lobes(腦葉).
It was found that the women who had less time between flights had smaller right temporal lobes. This area of the brain deals with recognizing and remembering what is seen. The same group performed worse and had slower reaction times on the visual memory test. And their saliva samples showed higher levels of stress hormones.
The researcher believes the brain needs at least ten days to recover after a long trip. He says airline workers told him their ability to remember got worse after working on planes for about four years. Other studies have shown that increased feelings of stress can cause a loss of cells in the part of the brain that controls memory.
Scientists say more tests are needed to study the effects of jet lag on the brain. They want to find out if too much jet lag could permanently (永久性的) affect memory.
小題1:According to the text, jet lag .
  1. can cause difficulties in speaking
  2. can make people feel tired for a few weeks
  3. can be only found in flight attendants
  4. can be caused by flying over several time zones
小題2:It can be inferred from the text that .
  1. the conclusion is refused by many scientists
  2. scientists fear that this research is not done properly
  3. the scientific conclusion needs the support from many tests
  4. every women who were examined in the research were mot healthy
小題3:From the result of the research we can see that .
  1. the women who have longer rest at home show better memory
  2. the women who fly in short time have smaller right temporal lobes
  3. the women who have longer flights fail the memory test
  4. the women who rest more than 14 days produce less hormones
小題4:What is the subject discussed in the text?
  1. The cause of jet lag.
  2. A story of a group of flight attendants.
  3. The importance of having enough rest after flights.
  4. A research about the effects of jet lag on the brain.

查看答案和解析>>

同步練習(xí)冊答案