The best swimmers tend to be tall and thin with long arms, long legs, long feet, and long hands. The size of their hands gives them great “water grasp”, and only a very small hand movement keeps them afloat.
They also have great strength, endurance, insulation(隔绝) against heat loss while in water below body temperature, thus better energy conservation, low resistance(阻力) when in the water, and swimming stroke mechanics(动作技巧).
Part of the reason why some people are better swimmers than others has to do with body density. The average person’s body density is slightly less than that of water. Muscle has greater density than fat. Therefore, very muscular people tend to be poor at staying afloat. Bone has greater density than fat. Therefore, very skinny people tend to be poor at staying afloat.
Good buoyancy(浮力) is not necessarily the most important factor in good swimming, but it certainly helps. For example, great competitive swimmers—tall, thin, and usually more muscular than average—tend to have greater body density than average and less buoyancy. Many would not float very well if they remained motionless in the water. Their much greater “water grasp” makes up for it.
The average woman contains a higher proportion(比例) of fat in her body than the average man, and the average man contains a higher proportion of muscle in his body than the average woman. Therefore, in general, women are better floaters than men. Compared with other competitive sports, the performance of women is closer to that of men in competitive swimming.
66. The underlined word “afloat” in the first paragraph might most probably mean “ ”.
A. keeping quiet B. swimming faster C. floating on water D. never drowning
67. What can we learn from the passage about body density?
A. Higher body density reduces swimming ability.
B. A person’s body density decides one’s swimming ability.
C. Fat people can always swim faster than thin people.
D. People with a lower proportion of muscle can hardly swim.
68. “Buoyancy” is important because .
A. it helps people to be safer in water B. it can help people to swim better
C. it can never be trained to get better D. it increases swimming length
69. How is the whole passage organized?
A. By reasoning and explaining. B. By argument and debate.
C. By explaining one part after another. D. By examples and comments.
70. Which of the following can serve as the best title of the passage?
A. How to be a good swimmer B. Details about swimming
C. Facts about swimming D. Better ways, better swimmers
科目：高中英语 来源： 题型：阅读理解
Mr. Black and Mr. White were two very famous artists in the city. Their drawings were also very popular in the city. But they tried to see who could draw the best picture.
One day they asked an old man to be the judge. Mr. Black drew an apple tree. He put his picture in the field. Soon the birds came and tried to eat the apples. The old man saw it and said, “You have certainly won. Mr. White cannot draw so good a picture as yours. But we will go to see his picture.”
They went to Mr. White’s house. There were nothing but red beautiful curtains on the wall. The old man asked, “Where is your picture, Mr. White?” He said, “Lift the curtains, and you will find my picture.” The old man tried to lift the curtains but found that they were drawn there. They were Mr. White’s picture. The old man said, “Birds thought the apples were real. Men thought the curtains were real. So Mr. White won. His picture is the best one.”
Mr. Black drew .
A. an apple tree B. the best picture C. curtains D. birds
The old man thought Mr. Black’s picture was good because .
A. it was in the field B. it was an apple tree
C. the birds liked it D. the birds thought it was real
Mr. White’s picture was .
A. an apple tree B. curtains C. nothing D. an old man
Which of the following statements is TRUE?
A. The birds came and ate the apples up.
B. The old man said Mr. White’s picture was the best one at last.
C. The two pictures were not so good.
D. The curtains on the wall were real.
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科目：高中英语 来源： 题型：阅读理解
What do you want to be when you grow up? A teacher? A doctor? How about an ice-cream taster?
Yes, there really is a job where you can get paid to taste ice-cream. Just ask John Harrison, an “Official Taste Tester” for the past 21 years. Testing helps manufacturers to be sure of a product’s quality. During his career Harrison has been responsible for approving large quantities of the sweet ice cream — as well as for developing over 75 flavors (味道).
Some people think that it would be easy to do this job, after all, you just have to like ice cream, right? No — there’s more to the job than that, says Harrison, who has a degree in chemistry. He points out that a dairy or food-science degree would be very useful to someone wanting a career in this “cool” field.
In a typical morning on the job, Harrison tastes and assesses 60 ice-cream samples. He lets the ice cream warm up to about 12℉. Harrison explains, “You get more flavor from warmer ice cream, which is why some kids like to stir it, creating ice-cream soup.”
While the ice cream warms up, Harrison looks over the samples and grades each one on its appearance. “Tasting begins with the eyes,” he explains. He checks to see if the ice cream is attractive and asks himself, “Does the product have the color expected from that flavor?” Next it’s time to taste!
Continuing to think up new ideas, try out new flavors, and test samples from so many kinds of ice cream each day keeps Harrison busy but happy — working at one cool job.
What is John Harrison’s job?
A. An official. B. An ice-cream taster.
C. A chemist. D. An ice-cream manufacturer.
According to John Harrison, to be qualified in the “cool field”, it is helpful to ______.
A. keep a diary of work B. have a degree in related subjects
C. have new ideas every day D. find out new flavors each day
What does Harrison do first when testing ice cream?
A. He stirs the ice cream.
B. He examines the color of the ice cream.
C. He tastes the flavor of the ice cream.
D. He lets the ice cream warm up.
Which of the following is probably the best title of the passage?
A. Tasting with Eyes B. Flavors of Ice Cream
C. John Harrison’s Life D. One Cool Job
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科目：高中英语 来源： 题型：阅读理解
Cancer Research UK has launched an online chat forum for cancer patients to swap stories or share experiences on how to cope with such a disastrous disease．
But Cancer Chat is a forum with a difference：it has an information safety net．
This means that a Cancer Research UK team will keep a watching brief to ensure that patients are not subjected to rogue “cancer cures’’ or scientifically unreasonable information．
Anyone can have access to the messages posted on Cancer Chat but if people wish to post a message they will need to register．
And Rebekah Gibbs，a cancer patient and star e f TV’S Casualty has voiced her support for the new project．“I think Cancer Chat is a brilliant idea，’’she said．“I have written a public diary about what I went through with breast cancer and I have had such a heart-warming response from other people going through the same thing．
“The idea of a Cancer Chat forum means you can share information about treatment and side effects and you can really open up about your feelings online in a way that can be difficult when talking to close friends and family．And with Cancer Research UK．monitoring the forum people can be guaranteed the quality of information being exchanged．”
Cancer Chat will also encourage its users to check out any cancer questions on its CancerHelp UK website which is specially designed to give patients and their families 6,000 pages of up-to-date information that is easy to understand and explains a wide range of treatments for different types of cancer and give details of clinical trials．There is also a UK database of cancer clinical trials．
The award-winning website attracts around one million visitors a month and Cancer Research UK hopes that some of these visitors will also want to post comments on the Cancer Chat forum．
For those who do not have access to computers and have questions about cancer, the charity's team of cancer information nurses are available during office hours to talk over patients’ concerns on the phone．
Cancer Chat is quite different from other forums in that ．
A．it has the support of a famous TV actress
B．it is a source of reliable information
C．it provides a huge amount of cancer information
D．it attracts a great number of visitors from all over the world each month
The underlined word “swap’’ in the first paragraph most probably means ．
A．invent B．write C．print D．exchange
Which of the following is NOT true according to the passage?
A．Rebekah Gibbs has written a private diary about her breast cancer．
B．CancerHelp UK offers information on cancer treatment and clinical trials．k+s-5#u
C．The messages posted on this forum are available to all visitors．
D．People with no computers available can also receive help．
Which of the following can be the best title for this passage?
A．A wonderful website CancerHelp UK
B．Come on．Turn to Cancer Research UK
C．Online Cancer Chat with a Safety Net
D．A Major Breakthrough in Cancer
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科目：高中英语 来源： 题型：阅读理解
When people in the U.S. have company or when they're invited to (formal or informal)get-together, they usually make a point of trying to make others feel comfortable and relaxed.On the whole, they tend to be informal. Men shake hands, but usually only when they're introduced. Male friends and business associate who haven't seen each other in a while may shake hands when they say hello. Women usually don't shake hands when being introduced to each other. When a woman and man are introduced, shaking hands is up to the woman. Americans rarely shake hands to say goodbye, except on business occasions. American women are used to being independent. They are used to going to places by themselves, making their own money, and often living alone. Sometimes they will ask men for help, but they usually don't want to be protected. Since the women's movement started, it's not always clear whether women expect men to open doors or help them into their coats. American women may start conversations with men or even ask them to dance.
There are a lot of Americans who don't smoke or drink, and many who don't want people to do those things in their houses. It's always best to ask for permission before you,bring alcohol to a dinner or before you light up a cigarette, if you are with people you don't ,know very well. Non-smokers have become more militant (好战的) about smoking in public places. Many restaurants, for example, have set up special areas for smokers.
House guests may bring gifts when they come to visit, and they often offer to help in some way. As a guest, you may want to ask your host or hostess if there's anything you can do to help in the kitchen. In many cases, the gesture is more important than actually helping.
"…the gesture is more important than actually helping." Here "gesture" means_________.
A. 态度 B. 话题 C.姿态 D. 言行
When American people are introduced to each other, ____________.
A. men seldom shake hands B. women often shake hands
C. a woman decides if she will shake hands with a man
D. a man decides if he will shake hands with a woman
___________is not mentioned in the passage.
A. How to visit an American family B. When American women's movement started
C. American women are independentD Non-smokers hate smoking in public places.
Which one is NOT right? ________________.
A None of Americans want people to smoke or drink in their houses
B Many Americans don’t smoke or drink
C Many special areas for smokers have been set up in the US
D It’s best to ask before you smoke in America
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科目：高中英语 来源： 题型：阅读理解
It’s a goal for millions and millions of families every year——keep the Christmas spending within a certain amount, but can still afford the gifts that your loved ones will enjoy. Never has this concern been greater in recent years than right now. Even so, there are several things that you can do to help.
Hit the sales.
No one wants to get up at four o’clock in the morning and fight to get the best deal on Black Friday, and it’s surely very tough to pick up the courage and get out there in the cold for a good deal, but sometimes——it can be well worth. Many retailers(零售商) offer specials all through the day——and some even offer online Black Friday specials, so you may still be able to get a great deal on Black Friday.
Pay close attention to advertisements.
Once the Christmas shopping season is coming, retailers hungry for business will do just about whatever to get you in the store. Pay very close attention to weekly advertisements of sales among the major retailers and you may be lucky enough to find different prices for the same thing in different shops.
Shop online.
Some of us don’t like running from store to store in order to get the best price on the perfect gift, and some of us don’t like to go out in the cold at all——thankfully for us, we can do online shopping.
The world of online shopping lets people visit all the major retailers as well as some specialty stores that could only be found on the Internet. Customers can find exactly what they are looking for, at the best possible price without ever having to leave the house. With traditional Christmas shopping consumers are sometimes limited to what’s left in stock if they wait too long to get to a particular store.
The first paragraph implies that ______.
A. nowadays not many people can afford expensive gifts
B. recently many people don’t want to spend money on gifts
C. Christmas is a time to make our loved ones enjoy their gifts
D. Christmas is a time to make us feel free to buy our loved ones gifts
In the writer’s opinion, it is rewarding on Black Friday _____.
A. if the weather is not very cold B. if we don’t have to fight for the best deals
C. if we don’t have to get up early D. If we get what we want at a good price
The underlined word “specials” means_______.
A. some experts in shopping
B. certain things for especially low price
C. some kind of help for a certain customer
D. things that can only be found on Friday
We can have more choices _____.
A. on Black Friday B. in a particular store
C. on the Internet D. from retailers
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