For years scientists have been concerned about the effects of air pollution on the earth's natural conditions. Some believe the air inside many houses may be more dangerous than the air outside. It may be one hundred times worse.
Indoor air pollution can cause a person to feel tired,to suffer eye pain, headache and other problems.Some pollutants(污染物)can cause breathing disorders,diseases of blood and even cancer. Most scientists agree that every modern house has some kind of indoor pollution.People began to notice the problem in the early 1970s.It is said that when builders began making houses and offices they did not want to waste energy.To do this,they built buildings that limited the flow of air between inside and outside.They also began using man-made building materials.These materials are now known to let out harmful gases.As the problem became more serious, scientists began searching for a way to deal with it.They discovered a natural pollution control system for building－green plants.Scientists do not really know how plants control air pollution.They believe that a plant's leaves absorb or take in the pollutants.In exchange the plant lets out oxygen through its leaves and through its tiny organizations on its roots.Scientists suggest that all buildings should have one large plant or several small plants inside for every nine square metres of space.Studies of different plants show that each absorbs different chemicals.So the most effective way to clean the air is to use different kinds of plants.Having green plants inside your house can make it a prettier and healthier place.
77.What is the topic of the passage?
A.Air pollution.           
B.Green plants indoors.
C.Indoor air pollution.         
D.Environment protecting.
78.What makes indoor air pollution more harmful than that of the air outside?
A.The limited flow of air indoors.
B.Man-made building materials.
C.Fewer green plants inside houses.     
D.The energy-saving materials indoors.
79.The most effective way to clean the air is to use different kinds of plants because______.
A.they can make houses pettier and healthier
B.they may let out oxygen which people need
C.they can take in all kinds of indoor pollutants  
D.they can absorb different harmful indoor chemicals
80.Which of the following is implied but NOT stated?
A.keep windows open and let fresh air in.
B.Scientists have a clear idea how plants control air pollution.
C.Oxygen is let out through the leaves and roots of the plants.
D.Green plants are a natural pollution control system for building.

Botswana lies immediately to the north of South Africa. It is bordered on the north and west by Namibia, on the north and east by Zimbabwe, and is connected by a narrow strip of land on the northern border to Zambia. Its territory consists almost entirely of a broad, flat, arid subtropical plateau(高原), though there are hills in the eastern part of the country.
In the northwest, the Okavango River empties into the Kalahari sands, creating the largest inland river delta in the world. While the Okavango Delta is home to relatively few large animals in comparison to other areas of Botswana, its clear waters and countless small islands are home to a variety of birds, plants, and smaller species of animals.
Nearby is Chobe National Park, a beautiful grassland reserve(保护区) that has gained international fame for its large elephant population. Southeast of Chobe are Botswana's large Makgadikgadi salt pans, home to numbers of blue wildebeest, several antelope species, and those international lovers of salt pans, flamingos(a kind of birds).
Almost the entire remaining portion of the country is covered by the Kalahari Desert--a varied environment of sand and grassland. Although this area of Botswana is where few people live, it is one of the richest wildlife areas in all of Africa.
Botswana's two largest parks, the Central Kalahari Game reserve and Gemsbok National Park, are found in this region.
Botswana's climate can get rather cool, particularly during the dry winter months of June to August when night occasionally brings frost. The rainy summer months (December through March) are best avoided for those interested in enjoying the best game viewing conditions.
72.South Africa is to the______of Botswana.
A.east     B.north   C.south   D.west
73.In the Okavango Delta we can find______.
A.a lot of large animals         B.many small islands
C.salt pans             D.polluted waters
74.If we want to see flamingo, we should go to_______ .
A.salt pans             B.Chobe National Park
C.Kalahari Desert          D.Gemsbok National Park
75.It is suggested that tourists visit Botswana in______.
A.December   B.March  C.January       D.July
76.What is the passage mainly about Botswana?
A.Location, geography and climate.     B.Living conditions, politics and salt pans.
C.Parks, animals and population.  D.Animals, races and sightseeing places.

Each cell in the human body contains about 25,000 to 35,000 genes, which carry information that determines your traits. Traits are characteristics you inherit from your parents; this means your parents pass some of their characteristics on to you through genes. For example, if both of your parents have green eyes, you might inherit the trait of green eyes from them. Or if your mom has freckles, you might inherit that trait and wind up with a freckled face. And genes aren’t just in humans — all animals and plants have genes, too.
Genes hang out all lined up on thread-like things called chromosomes. Chromosomes come in pairs, and there are hundreds, sometimes thousands of genes in one chromosome. The chromosomes and genes are made of DNA, which is short for deoxyribonucleic acid.
Chromosomes are found inside cells, the very small units that make up all living things. A cell is so tiny that you can only see it through the lens of a strong microscope, and there are billions of cells in your body. Most cells have one nucleus. The nucleus, which is sort of egg-shaped, is like the brain of the cell. It tells every part of the cell what to do. How does the nucleus know so much? It contains our chromosomes and genes. Tiny as it is, the nucleus has more information in it than the biggest dictionary you’ve ever seen.
71. What is the best title of this passage?
A. What Is a Gene?                    B. How Do Genes Work?
C. What Does A Gene Consist of?         D. How Do Nucleus Command Cells?
72. What does the underlined word “inherit” probably mean in the first paragraph?
A. carry          B. send        C. obtain           D. pass
73. Which of the following is NOT true according to the passage?
A. The parents pass some characteristics on to their children.
B. All living things receive traits from the old generations.
C. One’s green eyes might be passed on from the parents.
D.A mother’s freckled face might affect her young’s face.
74. From the passage we can know that______________.
A. genes can decide all your characteristics from parents.
B. genes exist inside cells that make up all living things.
C. genes tells every part of the cell what to do .
D. Chromosomes come in pairs containing genes.
75. From the passage we can conclude that ___________.
A. not all cells have one nucleus inside .
B. not all living things are made up of cells.
C. genes aren’t in humans but in animals and plants.
D. DNA is made of chromosomes and genes.

A turkey named Courage gave thanks to President Obama for saving his life on the day before Thanksgiving. Honouring a 62-year-old tradition, the President pardoned the bird on Thanksgiving eve.
The tradition of a turkey pardon at Thanksgiving began with President Truman in 1947. Courage comes from Ellsworth, Iowa. The name Courage was chosen by voters (投票人)who took part in a survey posted on the White House website. The lucky turkey walked on the lawn of the Rose Garden and posed for the cameras at the presidential podium(讲台).
The dinner that has become known as the First Thanksgiving was actually a harvest festival celebrated in December of 1621. That’s when English settlers in Plymouth, Massachusetts, gave thanks for the progress they had made after a hard winter in their new country. As America grew, Thanksgiving customs also spread and got bigger. George Washington declared that the first national Thanksgiving would be on November 26, 1789. In the decades to follow, however, people celebrated Thanksgiving locally, with no official date. President Abraham Lincoln declared the last Thursday in November 1863 a national day of Thanksgiving. It stayed that way until 1939, when President Franklin D. Roosevelt moved it one week earlier. He wanted to lengthen the shopping period before Christmas to encourage gift-buyers and to help businesses. So Congress（议会） ruled that, after 1941, Thanksgiving would be an official federal holiday falling on the fourth Thursday of November.
This year we celebrated Thanksgiving on Thursday, November. Millions of Americans got together to give thanks with friends and family. The lucky turkey, Courage, was one of them. After his pardon, Courage would be sent to Disneyland Resort in California, where he would be the grand assemble of Disney’s Thanksgiving Day Parade.
【小题1】That the turkey Courage was pardoned was decided by ________.

It is sometimes said that the English are polite people. This can make life difficult for foreigners. Suppose a foreign boy asks an English girl to go out with him and she says, “If I finish my work, I’ll meet you in the cafe at 7 o’clock.” Is she saying “yes” or “no” to his invitation?
In grammatical terms, she is using the conditional structure (表示条件的句式). By using the conditional, speakers of English can avoid giving a “yes” or “no” answer to a question. It enables people to be diplomatic (婉转的). If the girl doesn’t want to go out with the boy, she won’t turn up at the cafe. She will let him understand she is still working. If she wants to go out with him, but doesn’t want to appear too easy to catch, she has achieved that with her reply. But in this case, as she uses the first conditional which shows probability, she is quite likely to turn up at the cafe. Being polite can make life very difficult!
The conditional is often used by people in the news -- politicians, for example -- who wish to avoid speaking out their ideas. This is very important if they are on their way to discuss an agreement. No one wants to give away his or her points before he or she starts. A government spokesman might say to a group of workers, “If we could pay you more, we would.” The use of the conditional here makes room for argument although the speaker is using the second conditional form, which shows improbability. So it is unlikely the workers will get their rise.
“If ” is a small word, which appears often in the English language. It can show politeness, reported speech and conditionals such as the First -- probability -- if I can come to your party, I will; the Second -- improbability -- if I saw you tomorrow, I’d give you the book; and the Third -- impossibility (meaning it is too late to change something that has happened ) -- if you have told me, I would have helped you.
60. The using of the conditional can make a speech _________.
A. clearer        B. quicker             C. more polite        D.more exciting
61. Which of the following is true according to the passage?
A. Language used in the news should make room to argue.
B. Usually English girls are not easy to catch.
C. English people never speak out their ideas in public.
D. The word “ if ” can show different meanings.
62. In the passage, “If we could pay you more, we would.” probably means __________.
A. the workers will make more money
B. the spokesman doesn’t give any promise
C. the spokesman keeps his word
D. the workers’ problems aren’t difficult
63. This passage is mainly talking about _________.
A. the conditional in communication
B. how to invite a girl in Britain
C. British people and their life           
D. some language points in daily English

Why do people buy art? To answer this question, ask yourself what your reasons are for thinking of getting a piece of art. An artwork can cost a large amount of money, but if it meets your needs, it’ s worth every penny. 
People buy art for many reasons. Many people buy an artwork simply because they like it, even if it is by an unknown artist. Art, as long as you enjoy it, is never a waste of money.
Art is for enjoyment. Art is meant to be shown. Don’t ever feel pressured into buying something you won’t enjoy looking at day after day, no matter what other people may say. Don’t buy something that doesn’t attract you just because it is trendy, or because the artist is famous, or because you have been advised that the artwork will make a good investment. If you don’t like the artwork at all, don’t buy it!
Art improves your environment. Have you ever noticed that all beautiful homes have art as an integral（必需的） part of the decoration? Art lends life and color to otherwise plain and ordinary walls. A well thought--out art collection will help create a unique atmosphere in your home and make it more attractive.
Art makes a statement. The kind of art you surround yourself with says much about your personality, tastes and values. Art truly is a mirror of the soul.
Art enriches your life. Love--even the love of a work of art--contributes to healthier living and a longer lifespan (寿命). Art should enrich your life. Otherwise, why do you spend precious time and resources on it?
Just remember to select something which will appeal to your tastes, and keep to a sensible budget. Good art needn’t cost an arm and a leg.
Happy art collecting!
64. What’s the purpose of the passage?
A. To advise us to buy an expensive artwork.
B. To remind us to be sensible when buying an artwork.
C. To teach us how to choose works of art.
D. To explain the benefit of art to people.
65. According to the author, what should you consider when buying a piece of art?
A. Whether it brings pleasure to you.
B. Whether it is fashionable at present.
C. Whether you can profit from it in the end.
D. Whether it is created by a famous artist.
66. Which of the following words best describes a work of art placed in a house?
A. Ordinary  B. Attractive  C. Necessary  D. Unique
67. The underlined sentence in Paragraph 5 means that ____.
A. art can show what you look like
B. art is an expression of yourself
C. a mirror has a feature similar to art
D. a mirror can be a piece of true art

It is hardly surprising that clothing manufacturers （生产商）follow certain uniform standards for various features（特征）of clothes. What seems strange, however, is that the standard adopted for women is the opposite of the one for men. Take a look at the way your clothes button. Men’s clothes tend to button from the right, and women’s from the left. Considering most of the world’s population---men and women---are right-handed, the men’s standard would appear to make more sense for women. So why do women’s clothes button from the left?
History really seems to matter here. Button first appeared only on the clothes of the rich in the 17th century, when rich women were dressed by servants. For the mostly right-handed servants, having women’s shirts button from the left would be easier. On the other hand, having men’s shirts button from the right made sense, too. Most men dressed themselves, and a sword drawn from the left with the right hand would be less likely to get caught in the shirt.
Today women are seldom dressed by servants, but buttoning from the left is still the standard for them. Is it interesting? Actually, a standard, once set, resists change. At a time when all women’s shirts buttoned from the left, it would have been risky for any single manufacture to offer women’s shirts that buttoned the right. After all, women had grown so used to shirts which buttoned from the left and would have to develop new habits and skills to switch. It would be weird for them to button from the right, since anyone who noticed that would believe they were wearing men’s shirts.
【小题1】What is surprising about the standard of the clothing industry?

Can storms in Africa cause asthma(哮喘) in the Caribbean(加勒比)? Islanders point to the desert insects that land on beaches after a 5,000-kilometer flight across the Atlantic. If they can use winds to get from one continent to another, so can clouds of dust that carry disease.
Scientists think that as Africa becomes drier, dust from expanding deserts is being blown away into Caribbean islands. A study in Barbados shows that asthma has increased 17 times since Africa’s drought(干旱) began in 1973.
Other forms of life are suffering, too. Among them are the Caribbean’s famous coral reefs( 珊瑚礁), which began dying in large numbers in the 1900s. Eugene Shinn of the U.S. Geiological Sudrvey(USGS) in Florida went to the virgin Islands to study the reefs. The tests he and his colleagues carried out showed that the coral was dying of disease caused by Africa microbes(微生物) from across the ocean.
William Sprigg of the University of Arizona is studying the problem as part of a major UN project. He says that dust is causing problems in the U.S., too.
“We are just beginning to collect the evidence of airborne(空气传播的) dust influences on human health,” he told The Washington Post.
【小题1】Which of the following can be the best title for this passage?

Wilderness activity week, Finland
Set off on a really wild adventure to Finland, where night is a distant memory during the endless days of summer.
From your cottage, set high in the hills above Koli National Park, you can explore a perfect wilderness, and pull over at a lakeside beach whenever you like a dip（游泳）.
Seven-night breaks cost from ￡899 per adult, ￡699 per child, including flights, accommodation, some meals and a guide.  The Adventure Company (0845 450 5311; www.adventurecompany. co. uk).
Horseriding in the Tarn France
Learn to ride, or perfect your horse-riding skills at Les Juliannes in the Tarn Valley.  Activities include everything from show-jumping to hacking（骑马）through the rolling hills and medieval（中世纪的）villages.  Between sessions, you can relax by the pool, cycle along the country lanes or roam the grounds.  Guests stay at a rural 17th-century farmhouse.
Seven-night breaks cost from ￡658 per adult, ￡628 per child aged 12-15 years. ￡553 for 10 to 11-year-olds and ￡423 for under-nines.  Price includes return flights, transfers, half-board accommodation and ten hours’ riding, Inntravel（01653 617906；www. inntravel. co. uk）.
Learn to sail in Greece
Sunvil Sailing has live-aboard learn-to-sail breaks off the island of Lefkas that are designed for both the complete novice（新手）as well as those with a degree of sailing.
Seven-night breaks cost from ￡721pp in peak season, including return flights, transfers, live-aboard accommodation and tuition.  Meals and dinner ashore are not included.  Sunvil Sailing  (020 8758 4780; www. sunvil. co. uk).
【小题1】If you want to have some experiences of country life in the past, you’d better go to        .

President Barack Obama nominated (提名) Utah governor Jon Huntsman as ambassador (大使) to China on May 16.
Huntsman, 49, is the son of a Utah multimillionaire (千万富翁). He served as ambassador to Singapore under former president George H.W. Bush. In 2004, he became the governor of Utah and was elected for a second term in 2008.
The governor has strong ties to China: He lived in Taiwan when he was a teenager and speaks fluent Chinese. One of his daughters was adopted (收养) from China. His family also has business ties with China through Huntsman Corp, a chemical company. It has operations (动作) in the country including a factory in Shanghai.
Huntsman’s nomination has been met with praise in both countries.
“Jon Huntsman is a well-regarded politician (政治家) in the US…… his experience as ambassador to Singapore and his knowledge of China, plus his wonderful Chinese language skills singled him out from the large number of candidates,” Dai Min, president of the US-based Center for America-China Partnership (中美合作中心), told China Daily.
Obama appointed Huntsman “in order to seek China’s help and cooperation” on several international and regional issues, said Yuan Peng, professor of American Studies at the China Institute of Contemporary International Relations (中国现代国际关系研究院).
Some people say that President Obama’s decision to name John Huntsman is a well thought out political strategy. Huntsman is a big player in the Republican Party, and a possible presidential candidate for 2012. If he really has joined the Obama administration, he has lost that possibility. Now, when Obama kicks off his re-election campaign, “ambassador” Huntsman won’t be a threat.
64.The nomination of Huntsman won praise on both sides for the following reasons EXCEPT that _________.
A. he has business ties with China
B. he can speak Chinese fluently
C. he is a very experienced politician
D. he knows China very well
65.Which of the following facts about Huntsman is NOT true ?
A. He was once ambassador to Singapore.
B. He was elected governor of Utah twice.
C. He has served two presidents as governor.
D. He spent part of his youth in Taiwan.
66.From the last two paragraphs, we can conclude that ____________.
A. Obama considers China America’s top trade partner.
B. By choosing Huntsman, Obama kills two birds with one stone.
C. Huntsman will probably run for president in 2012.
D. Huntsman will settle several international and regional issues.