LONDON----Here’s a new warning from health experts: Sitting is deadly.

     Scientists are increasingly warning that sitting for prolonged periods — even if you also exercise regularly — could be bad for your health. And it doesn’t matter where the sitting takes place — at the office, at school, in the car or before a computer or TV — just the overall number of hours it occurs. Several studies suggest people who spend most of their days sitting are more likely to be fat, have a heart attack or even die.

　　In an editorial published this week in the British Journal of Sports Medicine, Elin EkblomBak of the Swedish School of Sport and Health Sciences suggested that authorities rethink how they define physical activity to highlight the dangers of sitting.

　　While health officials have issued guidelines recommending minimum amounts of physical activity, they haven’t suggested people try to limit how much time they spend in a seated position.

　　"After four hours of sitting, the body starts to send harmful signals," Ekblom-Bak said. She explained that genes regulating(调节) the amount of glucose（葡萄糖） and fat in the body start to shut down.

　　Even for people who exercise, spending long periods of time sitting at a desk is still harmful. Tim Armstrong, a physical activity expert at the World Health Organization, said people who exercise every day — but still spend a lot of time sitting — might get more benefit if that exercise were spread across the day, rather than in a single bout.（一回）

　　Still, in a study published last year that tracked more than 17,000 Canadians for about a dozen years, researchers found people who sat more had a higher death risk, independently of whether or not they exercised.

　　"We don’t have enough evidence yet to say how much sitting is bad," said Peter Katzmarzyk of the Pennington Biomedical Research Center in Baton Rouge, who led the Canadian study. "But it seems the more you can get up and interrupt this sedentary behavior, the better."

　　Figures from a U.S. survey in 2003-2004 found Americans spend more than half their time sitting, from working at their desks to sitting in cars.

　　Experts said more research is needed to figure out just how much sitting is dangerous, and what might be possible to offset those effects.

　　"People should keep exercising because that has a lot of benefits," Ekblom-Bak said. "But when they’re in the office, they should try to interrupt sitting as often as possible," she said.

1.What is the best title for the text?

A. Not Sitting Too Much While Working      B. How To Avoid Sitting Too Much

C. Sitting Too Much Could Be Deadly          D. More And More People Sit Too Much

2.According to the research,______________.

A. the more time you spend in exercising in a single bout, the healthier you will be.

B. those who often sit too much are sure to grow fat or suffer from a heart attack.

C. regular exercise is effective to get rid of the side effect of sitting too much.

D. you had better not sit for more than four hours in a single bout.

3.How does the danger of sitting too much affect the human body?

A. It results in a higher death risk.

B. It increases glucose and fat in the body.

C. It makes a person unable to exercise long enough in a day.

D. It causes the gene to fail to balance the glucose and fat in the body.

4.In the opinion of Ekblom-Bak, you’d better have a rest in the office by________.

A. sending your friends e-mails           

B. having a walk around your office

C. chatting online or playing computer games 

D. listening to music with your head on the desk.

（ 共5小题，每小题2分，满分10分 ）

Read the following text and choose the most suitable heading from A-F for each paragraph. There is one extra heading which you do not need.

A.　Goods for auction (拍卖) sales

　　B.　Definition of bidding

　　C.　Way to sell more goods by auction

　　D.　Auction sales in history

　　E.　Brief introduction to auctions

　　F.　Making a larger profit as an auctioneer

61. ______

Auctions are public sales of goods, conducted by an officially approved auctioneer. He asks the crowd assembled in the auction-room to make offers, or “bids”, for the various items on sale. He encourages buyers to bid higher figures, and finally names the highest bidder as the buyer of the goods. This is called “knocking down” the goods, for the bidding ends when the auctioneer strikes a small hammer on a table at which he stands.

62. ______

The ancient Roman probably invented sales by auction, and the English word comes from the Latin auction, meaning “increasing”. The Romans usually sold in this way the goods taken in war. In England in the eighteenth centuries, goods were often sold “by the candle”: a short candle was lit by the auctioneer, and bids could be made while it stayed alight.

63. ______

Practically all goods whose qualities vary are sold by auction. Among these are coffee, skins, wool, tea, furs, silk and wines. Auction sales are also usual for land and property, furniture, pictures, rare books, old china and similar works of art.

64. ______

An auction is usually advertised beforehand with full particulars of the articles to be sold and where and when they can be viewed by potential buyers. If the advertisement cannot give full details, catalogues are printed, and each group of goods to be sold together, called a “lot”, is usually given a number. The auctioneer need not begin with Lot 1 and continue in the order of numbers: he may wait until he notices the fact that certain buyers are in the room and then produce the lots they are likely to be interested in.

65. ______

The auctioneer’s services are paid for in the form of a percentage of the price the goods are sold for. The auctioneer therefore has a direct interest in pushing up the bidding as high as possible. He will not waste time by starting the bidding too low. He will also play on the opponents among his buyers and succeed in getting a high price by encouraging two business competitors to bid against each other.

We now think of chocolate as sweet, but once it was bitter. We think of it as a candy, but once it was a medicine. Today, chocolate can be a hot drink, a frozen dessert, or just a snack. Sometimes it’s an ingredient(配料) in the main course of a meal. Mexicans make a hot chocolate sauce called mole and pour it over chicken. The Mexicans also eat chocolate with spices(香料) like chili peppers.

Chocolate is a product of the tropical cacao tree. The beans taste so bitter that even the monkeys say “Ugh!” and run away. Workers must first dry and then roast the beans. This removes the bitter taste.

The word “chocolate” comes from a Mayan word. The Mayas were an ancient people who once lived in Mexico. They valued the cacao tree. Some used the beans for money, while others crushed them to make a drink.

When the Spaniards came to Mexico in the sixteenth century, they started drinking cacao too.Because the drink was strong and bitter, they thought it was a medicine. No one had the idea of adding sugar. The Spaniards took some beans back to Europe and opened cafes. Wealthy people drank cacao and said it was good for the digestion.

In the 1800s, the owner of a chocolate factory in England discovered that sugar removed the bitter taste of cacao. It quickly became a cheap and popular drink. Soon afterwards, a factory made the first solid block of sweetened chocolate. Later on, another factory mixed milk and chocolate together. People liked the taste of milk chocolate even better.

Besides the chocolate candy bar, one of the most popular American snacks is the chocolate chip cookie. Favorite desserts are chocolate cream pie and, of course, an ice cream sundae with hot fudge sauce.  

1. It was ________that discovered sugar could remove the bitter taste of cacao.

A. The workers in the chocolate factory       B. The Spaniards

C. The people in England                  D. The owner of a chocolate factory

2. According to the passage which of the following statements is true?

A. Nobody had the idea of adding sugar until the sixteenth century.

B. The word “chocolate” comes from a Mexican word.

C. The beans taste so bitter that even the monkeys like them.

D. Workers must dry and roast the beans to remove the bitter taste.

3. The Spaniards think that cacao was a medicine because________

A. it was strong and bitter.    B. it was good for digestion.

C. it cured man’s diseases.     D. it was a kind of drink for good health.

4. Which is the right time order of the events regarding chocolate?

a. Chocolate became a cheap and popular drink in England.

b. A factory made the first solid block of sweetened chocolate.

c. The Spaniards started drinking cacao.

d. It was found that sugar removed the bitter taste of cacao.

e. A factory mixed milk and chocolate together.  

A. a-b-c-d-e　           B. c-d-e-b-a　　   C. c-d-a-b-e　　         D. c-d-b-e-a

5. It can be inferred from the passage that ________.

A. chocolate can be a hot drink, a frozen dessert, or a candy bar

B. Mexicans like chocolate very much

C. chocolate is a product of the cacao tree

D. people liked the taste of chocolate mixed with milk

　
E　　
As a result of pollution , Lake Erie , on the borders of the USA and Canada, is now without any living things.　　
Pollution in water is not simply a matter of “poisons” killing large numbers of fish overnight. Very often the effects of pollution are not noticed for many months or years because the first organism(生物体 ) to be affected are either plants or plankton. But these organisms are the food of fish and birds and other creatures. When this food disappears, the fish and birds die too. In this way a whole food chain can be wiped out, and it is not until dead fish and water birds are seen at the river’s edge or on the sea shore that people realize what is happening.　　
Where do the substances which pollute the water come form? There are two main sources sewage (污水) and industrial waste. As more detergent (洗涤剂 ) is used in the home, so more of it is finally put into our rivers. lakes and seas. Detergents harm water birds dissolving the natural substances which keep their feathers waterproof. Sewage itself, if not properly treated, makes the water dirty and prevents all forms of life in rivers and the sea from receiving the oxygen they need. Industrial waste is even more harmful since there are many highly poisonous things in it, such as copper and lead(铅 ).　　
So , if we want or stop this pollution , the answer is simple: sewage and industrial waste must be made clean before flowing into the water. It may already be too late to save some rivers and lakes, but others can still be saved if the correct action is taken at once.　　
72. Pollution in water is noticed _____. 　　
A. when the first organisms are affected    B. when a good many fish and birds die 　　
C. when poisonous things are poured into water      　　
D. as soon as the balance of nature is destroyed 　　
73. The living things die because there is no ____ in the lake or river.  　　
A. water          B. fish               C. poison           D. oxygen 　　
74. Which of the following is harmful according to the passage? 　　
A. Organisms                             B. Plants and plankton in the water     　　
C. Waste water from cleaning   D. Industrial waste made clear before flowing into the water 　　
75.The way to stop water pollution is _______.　　
A. realize the serious situation clearly 　　
B. put oxygen into the river 　　
C. make the waste material harmless before flowing into the water 　　
D. make special room in the sea for our rubbish　　

E
　　About ten years ago, a young and very successful businessman named Josh was traveling down a Chicago neighborhood street. He was going a bit too fast in his shiny, black, 12 cylinder Jaguar XKE, which was only two months old.
　　He was watching for kids rushing out from between parked cars and slowed down when he thought he saw something. As his car passed, no child came out, but a brick sailed out and-WHUMP!-it hit the Jag’s shiny black side door! SCREECH…!!!! Immediately Josh stopped the car, jumped out, seized the kid and pushed him up against a parked car. He shouted at the kid, “What was that all about and who are you? Just what the heck are you doing?!” Building up a head of steam, he went on. “That’s my new Jag, that brick you threw is going to cost you a lot of money. Why did you throw it?”
　　“Please, mister, please… I’m sorry! I didn’t know what else to do!” begged the youngster. “I threw the brick because no one else would stop!” tears were streaming down the boy’s face as he pointed around the parked car. “It’s my brother, mister,” he said. “He rolled of the curb(路沿) and fell out of his wheelchair and I can’t lift him up.” Sobbing, the boy asked the businessman, “Would you please help me get him back into his wheelchair? He’s hurt and he’s too heavy for me.”
　　Moved beyond words, the young businessman tried hard to swallow the rapidly swelling lump in his throat. Straining, he lifted the young man back into the wheelchair and took out his handkerchief and wiped the scrapers and cuts, checking to see that everything was going to be OK. He then watched the younger brother push him down the sidewalk toward their home.
　　It was a long walk back to the black, shining 12 cylinder Jaguar XKE-a long and slow walk. Josh never did fix the side door of his Jaguar. He kept the dent(凹痕) to remind him not to go through life so fast that someone has to throw a brick at him to get his attention. Feel for the bricks of life coming at you.
67．The boy threw a brick at the businessman’s car because ________.
A．he wanted to ask for some money
B．he envied the brand-new car very much
C．the businessman drove at a high speed
D．he wanted to get help from the driver
68．Which of the following is the right order of the story?
a．The younger brother threw a brick at Josh’s car.
b．The elder brother fell out of his wheelchair.
c．The younger brother begged Josh for help.
d．Josh lifted the elder brother back into his wheelchair.
e．Josh shouted at the younger brother.
A．b，a，c，e，d        B．a，c，d，b，e
C．b，a，e，c，d        D．a，c，b，e，d
69．What can we learn from the passage?
A．Josh was a kind-hearted man.
B．The two kids were Josh’s neighbors.
C．Josh would accept the money from the kids.
D．Josh’s new car broke down easily.
70．According to the passage, we must ________.
A．try to be more understanding seeing others in trouble
B．drive fast in a neighborhood street that is dangerous
C．try to get ready for the trouble in your future life
D．protect oneself from being hurt