The World Health Organization says reducing salt or sodium use can reduce your risk of heart disease, kidney failure or stroke. But researchers say the risk would be reduced even more if the amount of dietary potassium was increased at the same time.
The World Health Organization says high blood pressure affects one billion people worldwide. It leads to many deaths or permanent disabilities. High blood pressure, also known as hypertension, is called the silent killer because there are few apparent signs. Many studies have shown that reducing salt or sodium in the diet can lower the risk of stroke and other health problems.
Graham MacGregor is with the Barts and London School of Medicine and Dentistry. He and other researchers have examined earlier studies and organized their own.
“When you’re on the high salt intake you always have some extra salt in you and a slightly greater volume of blood. And that’s what puts up the blood pressure. I mean, if you wanted, an analogous thing would be really a central heating system. If you put more water into a closed system, the pressure will go up.”
He says the body does need salt, about less than half a gram each day. However, people in developing countries are eating about eight to 10 grams a day. Professor MacGregor says lowering salt can do a lot to reduce hypertension, but increasing potassium in the diet also helps. People in industrial nations eat about three grams of potassium a day through diet. Professor MacGregor says experts believe eating about four grams a day is the best choice.
Health officials have expressed concern about developing countries with growing economies. Those nations are increasingly turning to a western diet with its salty, sugary and fatty foods. Officials are predicting a sharp rise in heart disease and related problems.
Which of following has nothing to do with having extra salt in you？
| A．heart disease | B．kidneyfailure | C．stroke | D．toothache |
The writer uses “a central heating system”to_________.
| A．give examples | B．introduce a new thing |
| C．compare the two things | D．contrast the two things |
According to the passage，which of the following statements is true？
| A．The body needs salt, about three grams each day. |
| B．Eating about four grams potassium a day is the best choice. |
| C．Lowering potassium can do a lot to reduce hypertension. |
| D．Reducing sodium in the diet canhigherthe risk of stroke. |
C
Among the more colorful characters of Leadville’s golden age were H.A.W. Tabor and his second wife, Elizabeth McCourt, better known as "Baby Doe". Their history is fast becoming one of the legends of the Old West. Horace Austin Warner Tabor was a school teacher in Vermont. With his first wife and two children he left Vermont by covered wagon in 1855 to homestead in Kansas. Perhaps he did not find farming to his liking, or perhaps he was attracted by rumors of fortunes to be made in Colorado mines. At any rate, a few years later he moved west to the small Colorado mining camp known as California Gulch, which he later renamed Leadville when he became its leading citizen. "A large amount of lead is sure to be found here." he said.
As it turned out, it was silver, not lead, that was to make Leadville’s fortune and wealth. Tabor knew little about mining himself, so he opened a general store, which sold everything from boots to salt, flour, and tobacco. It was his custom to "grubstake" prospective（预期的） miners, in other words, to supply them with food and supplies, or"grub", while they looked for ore（矿石）, in return for which he would get a share in the mine if one was discovered. He did this for a number of years, but no one that he aided ever found anything of value.
Finally one day in the year 1878, so the story goes, two miners came in and asked for "grub". Tabor had decided to quit supplying it because he had lost too much money that way. These were persistent（坚持的）, however, and Tabor was too busy to argue with them. "Oh help yourself. One more time won’t make any difference," He said and went on selling shoes and hats to other customers. The two miners took $17 worth of supplies, in return for which they gave Tabor a one-third interest in their findings. They picked a barren place on the mountainside and began to dig. After nine days they struck a rich vein of silver. Tabor bought the shares of the other two men, and so the mine belonged to him alone. This mine, known as the "Pittsburgh Mine," made $1,300, 000 for Tabor in return for his $17 investment.
Later Tabor bought the Matchless Mine on another barren hillside just outside the town for $117,000.This turned out to be even more abundant than the Pittsburgh, producing $35 000 worth of silver per day at one time. Leadville grew. Tabor became its first mayor, and later became the governor of the state.
49. The word "grubstake" in paragraph 2 means __________ .
A. to supply miners with food and supplies
B. to open a general store
C. to do one’s contribution to the development of the mine
D. to supply miners with food and supplies and in return get a share in the mine, if one was discovered
50.Tabor made his first fortune_________.
A. by supplying two prospective miners and getting in return a one-third interest in the findings
B. because he was persuaded by the two miners to quit supplying
C. by buying the shares of the other
D. as a land speculator（投机商）
51. The underlying（潜在的）reason for Tabor’s successful life career is __________.
A. purely accidental
B. based on the analysis of miner’s being very poor and their possibility of discovering
profitable mining site
C. through the help from his second wife
D. he planned well and accomplished targets step by step
52. If this passage is the first part of an article, who might be introduced in the following part?
A. Tabor’s life. B. Tabor’s second wife, Elizabeth McCourt.
C. Other colorful characters. D. Tabor’s other careers.
第二部分阅读理解（共20小题。每小题2分；满分40分）
第一节阅读下列短文，从每题所给的四个选项（ABC和D）中，选出最佳选项，并在答题卡上将该项涂黒。
A
Long after the 1998 World Cup was won, disappointed fans were still cursing thedisputed refereeing (裁判) decisions that denied victory to their team. A researcher was appointed to study the performance of some top referees.
The researcher organized an experimental tournament (锦标赛) involving four youth teams. Each match lasted an hour, divided into three periods of 20 minutes during which different referees were in charge.
Observers noted down the referees' errors, of which there were 61 over the tournament. Converted to a standard match of 90 minutes, each referee made almost 23mistakes, a remarkably high number.
The researcher then studied the videotapes to analyze the matches in detail. Surprisingly, he found that errors were more likely when the referees were close to the incident. When the officials got it right, they were, on average, 17 meters away from the action. The average distance in the case of errors was 12 meters. The research shows the optimum (最佳的) distance is about 20 meters.
There also seemed to be an optimum speed. Correct decisions came when the referees were moving at a speed of about 2 meters per second. The average speed for errors was 4 meters per second.
If FIFA, football's international ruling body, wants to improve the standard ofrefereeing at the next World Cup, it should encourage referees to keep their eyes on the action from a distance, rather than rushing to keep up with the ball, the researcher argues.
He also says that FIFA's insistence that referees should retire at age 45 may be misguided. If keeping up with the action is not so important, their physical condition is less critical.
41. The number of refereeing errors in the experimental matches was _______.
A. slightly above average B. higher than in the 1998 World Cup
C. quite unexpected D. as high as in a standard match
42. The findings of the experiment show that _______.
A. errors are more likely when a referee keeps close to the ball
B. the farther the referee is from the incident, the fewer the errors
C. the more slowly the referee runs, the more likely will errors occur
D. errors are less likely when a referee stays in one spot
43. The word "officials" (Line 2, Para. 4) most probably refers to _______.
A. the researchers involved in the experiment
B. the inspectors of the football tournament
C. the referees of the football tournament
D. the observers at the site of the experiment
44. What is one of the possible conclusions of the experiment?
A. The ideal retirement age for an experienced football referee is 45.
B. Age should not be the chief consideration in choosing a football referee.
C. A football referee should be as young and energetic as possible.
D. An experienced football referee can do well even when in poor physical condition.
E
Psychologists take opposing views of how external rewards(外部奖赏), from warm praise to cold cash, affect motivation and creativity. Behaviorists, who study the relation between actions and their consequences, argue that rewards can improve performance at work and school. Cognitive (认知学派的) researchers, who study various aspects of mental life, believe that rewards often destroy creativity by encouraging dependence on approval and gifts from others.
The latter view has gained many supporters, especially among educators. But the careful use of small monetary (金钱的) rewards sparks creativity in grade-school children, suggesting that properly presented inducements (刺激) indeed aid inventiveness(创造力), according to a study in the June Journal of Personality and Social Psychology".
"If kids know they're working for a reward and can focus on a relatively challenging task, they show the most creativity," says Robert Eisenberger of the University of Delaware in Newark. "But it's easy to kill creativity by giving rewards for poor performance or creating too much desire for rewards." A teacher who continually draws attention to rewards or who hands out high grades for ordinary achievement ends up with uninspired students, Eisenberger holds. As an example of the latter point, he notes growing efforts at major universities to tighten grading standards and restore
failing grades.
In earlier grades, the use of so-called token economies, in which students handle challenging problems and receive performance-based points toward valued rewards, shows promise in raising effort and creativity, the Delaware psychologist claims.
71．Psychologists are divided with regard to their attitudes toward _____.
A．the choice between spiritual encouragement and monetary rewards
B．the amount of monetary rewards for students' creativity
C．the study of relationship between actions and their consequences
D．the effects of external rewards on students' performance
72．What is the response of many educators to external rewards for their students?
A．They have no doubts about them.
B．They have doubts about them.
C．They approve of them.
D．They avoid talking about them.
73．Which of the following can best raise students' creativity according to Robert Eisenberger?
A．Giving them tasks they have not dealt with before.
B．Giving them tasks which require inventiveness.
C．Giving them rewards they really deserve.
D．Giving them rewards they hope for.
74．.It can be inferred from the passage that major universities are trying to tighten their grading standards because they believe ______.
A．rewarding poor performance may kill the creativity of students
B．punishment is more effective than rewarding
C．failing uninspired students helps improve their overall academic standards
D．discouraging the students' anticipation for easy rewards is a matter of urgency
75．The phrase "token economies" (Sentence 1, Paragraph 5) probably refers to _____.
A．ways to develop economy
B．systems of rewarding students
C．approaches to solving problems
D．methods of improving performance
D
A lot of us lose life’s tough battles by starting a frontal(正面的)attack—when a touch of humor might well enable us to win. Consider the case of a young friend of mine, who hit a traffic jam on his way to work shortly after receiving an ultimatum(最后通牒) about being late on the job. Although there was a good reason for Sam’s a being late—serious illness at home—he decided that this by-now-familiar excuse wouldn’t work any longer. His supervisor was probably already pacing up and down preparing a dismissal speech.
Yes, the boss was, Sam entered the office at 9:35. The place was as quiet as a locker room(更衣室); everyone was hard at work. Sam’s supervisor came up to him. Suddenly, Sam forced a grin and stretched out his hand. “How do you do!” he said. “I’m Sam Maynard. I’m applying for a job. Which, I understand, became available just 35 minutes ago. Does the early bird get the worm?”
The room exploded in laughter. The supervisor clamped off a smile and walked back to his office. Sam Maynard had saved his job—with the only tool that could win, a laugh.
Humor is a most effective, yet frequently neglected, means of handling the difficult situations in our lives. It can be used for patching up differences, apologizing, saying “no”, criticizing, getting the other fellow to do what you want without his losing face. For some jobs, it’s the only tool that can succeed. It is a way to discuss subjects so sensitive that serious dialog may start a quarrel. For example, many believe that comedians on television are doing more today for racial and religious tolerance(忍受力) than people in any other forum.
67．Why was Sam late for his job?
A．Because he was ill.B．Because he got up late.
C．Because he was caught in a traffic jam. D．He was busy applying for a new job.
68.the main idea of this passage is
A．They have no doubts about them. B．They have doubts about them.
C．They approve of them.D．They avoid talking about them.
69．the phrase “clamped off “in paragraph 3 probably means trying to
A．hold back B．set off C．leave behind D．gave out
70．Which of the following statements can we infer from the passage?
A．Many lose life’s battles for they start a frontal attack.
B．It wasn’t the first time that Sam came late for his work
C．Sam was supposed to come to his office at 8:30.
D．Humor is a very effective way of dealing with difficult situations.
C
Take Action for a Better World: Volunteers Needed
Six months’ preparation in Denmark: Africa studies, team work combined with social work with risk group teenagers.
Six months’ community work in Malawi in People to People Projects: Child Aid, HIV/ AIDS. Fights and Teacher Training.
Qualifications (条件): 18 years, hard working and social engagement.
Please contact us by email: takeaction@berrerworld.com
Part-time Work with Exchange Students
YOUYH International is a non-profit high school foreign exchange student organization. We welcome teenagers from over 80 countries worldwide and provide host families. The Community Representative is a part-time position designed for people with a strong desire to do something rewarding in the community and earn some extra money.
Applicants(申请人) best suited for this work should enjoy teenagers, have a strong interest in cross-cultural communication and feel comfortable networking. Full training and support will be provided through branch offices throughout the US. Positions available in most states.
If interested, please email staff@youth.org or call 888-123-9872.
International Summer Job
Hi, I’m an ESL student in China. I’m 20, quiet and polite, and I speak reasonable English. I’m looking for a summer job in an English-speaking country. I can teach Chinese or do house and garden work, and cook Chinese dishes. Can anybody offer me a job? I don’t need to earn much, just enough in 2 months (July- August) to pay for my return ticket to China. My goal is to improve my English and see a bit more of the world.
My email is: ram3462@hotmail.com
Call for Native Speakers of English
I am looking for native speakers of English to join in an experiment. This experiment is carried out over the Internet. You don’t need any specific knowledge other than understanding and speaking English at a native level. The first task will take you around 15 minutes. After this task, you can decide whether you want to continue the experiment. The tasks involve reading texts and designing questions and answers.
If you are willing to help me, then please email me: club3864@hotmail.com
63．Who is suitable to work as a Community Representative in YOUTH International?
A．One who enjoys working with teenagers from different countries.
B．One who hopes to take action in fighting against diseases.
C．One who has a strong desire to improve his or her English.
D．One who wants to earn some pocket money in the program.
64．Where will Jack, a volunteer, receive the training before he is sent to work in Malawi?
A．In some local offices in the U.S. B．In an ESL organization in China.
C．In a preparation program in Denmark. D．In an exchange student center in Africa.
65．If Mrs. Black in the U.S. hopes to learn some Chinese at home, she may contact _______.
A．takeaction@betterworld.com B．ram3462@hotmail.com
C．club3864@hotmail.comD．staff@youth.org
66．What are volunteers for an experiment over the Internet supposed to do?
A．To interview people online.B．To do some housework.
C．To offer advice on Child Aid. D．To provide language exercises.