Our bodies are wonderfully skillful at keeping balance．When the temperature jumps, we sweat to cool down．When our blood pressure falls, our hearts can do something．As it turns out, though, our natural state is always changing．Researchers are finding that everything from blood pressure to brain function changes regularly with the cycles of sun, moon and seasons．And their insights （洞察力） are getting new ways for keeping away such common killers as heart disease and cancer．Only one doctor in 20 has a good knowledge of the scientific use of time in medicine．But according to a new American Medical Association, three out of four are eager to change that．“The field is exploding,” says Michael Smolensky．“Doctors used to look at us like, What spaceship did you get off ? Now they're thirsty to know more．”
In medical school, most doctors learn that people with chronic conditions should take their medicine regularly．“It’s a terrible way to treat disease,” says Dr Richard Martin．For example, asthmatics （气喘患者） are most likely to suffer during the night．Yet most patients try to keep a constant level of medicine in their blood day and night, whether by breathing in on an inhaler （吸入器） four times a day or taking a pill each morning and evening．In recent studies, researchers have found that a large mid afternoon dose of a bronchodilator （支气管扩张剂） can be as safe as several small doses, and better for preventing nighttime attacks．
If the night belongs to asthma, the dawn belongs to high blood pressure and heart disease．Heart attacks are twice as common at 9 a．m．as at 11 p．m．Part of the reason is that our blood pressure falls at night, then rises as we start to work for the day．“Doctors know that,” says Dr．Henry Black of Chicago's Medical Center, “but until now, we haven't been able to do anything about it．” Most blood - pressure drugs provide 18 to 20 hours of relief （减缓）．But because they’re taken in the morning, they're least effective when most needed．“You take your pill at 7 and it's working by 9,” says Dr．William White of the University of Connecticut Health Center “But by that time you've gone through the worst four hours of the day with no protection．” Bedtime medicine would prevent high blood pressure, but it would also push blood pressure to dangerously low levels during the night．Researchers are finding that _________ ．
| A．heart disease and cancer are the most common killers of human beings |
| B．only blood pressure and brain function are decided by cycles of sun, moon and seasons |
| C．the functions of human bodies have much to do with nature |
| D．any change in human bodies goes with changes in the surroundings |
According to the author, it is best for asthmatics to
take their medicine _________ ．
| A．at certain time |
| B．each morning and evening |
| C．when the disease occurs |
| D．at midafternoon |
Which of the following statements is NOT true?
A．Doctors know more about illnesses than before．
B．Doctors in the U．S．used to be thirsty to know more about the new medical field．
C．The researchers' insights are providing new methods to prevent common killers．
D．The correct use of time in medicine attracts more attention in medical circle in the U．S．A．The suggested title for this passage might be _________．
| A．Medicine Is Everything | B．Treatment Is Everything |
| C．Timing Is Everything | D．Prevention Is Everything |
Going to school means learning new skills and facts in different subjects. Teachers teach and students learn, and many scientists are interested in finding ways to improve both teaching and learning processes.
Sian Beilock and Susan Leving, two psychologists at the University of Chicago, are trying to learn about learning. In a new study about the way kids learn math in elementary school, Beilock and Levine found a surprising relationship between what female teachers think and what female students learn: If a female teacher is uncomfortable with her own math skills, then her female students are more likely to believe that boys are better than girls at math. “If these girls keep getting math-anxious female teachers in later grades, it may create a snowball effect on their math achievement,” Levine told Science News. The study suggests that if these girls grow up believing that boys are better at math than girls are, then these girls may not do as well as they would have if they were more confident.
Just as students find certain subjects to be difficult, teachers can find certain subjects to be difficult to learn—and teach. The subject of math can be particularly difficult for everyone.
The new study involved 65 girls, 52 boys and 17 first-and second-grade teachers in elementary schools in the Midwest. The students took math achievement tests at the beginning and end of the school year, and the researchers compared the scores.
The researchers also gave the students tests to tell whether the students believed a math superstar had to be a boy. Then the researchers turned to the teachers: To find out which teachers were anxious about math, the researchers asked the teachers how they felt at times when they came across math, such as when reading a sales receipt. A teacher who got nervous looking at the numbers on a sales receipt, for example, was probably anxious about math.
Boys, on average, were unaffected by a teacher’s anxiety. On average, girls with math-anxious teachers scored lower on the end-of-the-year math tests than other girls in the study did. Plus, on the test showing whether someone thought a math superstar had to be a boy, 20 girls showed feeling that boys would be better at math—and all of these girls had been taught by female teachers with math anxiety.
According to surveys done before this one, college students who want to become elementary school teachers have the highest levels of anxiety about math. Plus, nine of every 10 elementary teachers are women, Levine said. Sian Beilock and Susan Levine carried out the new research in order to ___________.
| A．know the effects of teaching on learning |
| B．study students’ ways of learning math |
| C．prove women teachers are unfit to teach math |
| D．find better teaching methods for teachers |
The underlined part in paragraph 2 most probably means that girls may ___________.
| A．end up learning math anxiety from their teachers |
| B．study the ways their female teachers behave |
| C．have an influence on their math-anxious female teachers |
| D．gain unexpected achievement in such subjects as math |
In the study, what were the teachers required to do?
| A．Prepare two math achievement tests for the students |
| B．Tell their feelings about math problems |
| C．Answer whether a math superstar had to be a boy |
| D．Compare the students’ scores after the math tests |
What is the finding of the new study?
| A．No male students were affected by their teachers’ anxiety |
| B．Almost all the girls got lower scores in the tests than the boys |
| C．About 30% of the girls thought boys are better at math than girls |
| D．Girls with math-anxious teachers all failed in the math tests |
Which of the following is TRUE according to the text?
| A．117 students and teachers took part in the new study |
| B．The researchers felt surprised at the findings of their study |
| C．Beilock and Levine are interested in teaching math |
| D．Men teachers are better at teaching math than women teachers |
A villa (别墅) designed to resist earthquakes with “self-healing” cracks in its walls, thanks to nanotechnology (纳米技术) applications with self-healing polymers (聚合物), is to be built on a Greek mountainside. The villa’s walls will include special particles that turn into a liquid when squeezed (压榨) under pressure, flow into cracks, and then harden to form a solid material.
The NanoManufacturing Institute (NMI), based in Leeds University, will play a key role in an EU project to construct the home by December 2010. The project, called “Intelligent Safe and Secure Buildings” (ISSB) is funded under the EU’s Sixth Framework program. This potentially life-saving scheme is led by German building manufacturer Knauf. The villa will be built in Amphilochia, in western Greece, where Knauf currently runs a manufacturing plant. If the experiment is successful, more tremor-resistant（防震）homes could be built in earthquake zones across the globe. NMI chief executive Professor Terry Wilkins said, “What we’re trying to achieve here is very exciting. We’re looking to use polymers in much tougher situations than ever before on a larger scale.” Monitors contained in the villa’s walls will be able to collect vast amounts of data about the building over time. Wireless sensors(传感器) will record any stresses and vibrations, as well as temperature, humidity and gas levels.
The walls are to be built from new load-bearing steel frames and high-strength gypsum（石膏）board. Prof Wilkins said, “If there are any problems, the intelligent sensor network will be able to alert residents immediately so they have time to escape. If whole groups of houses are so constructed, we could use a larger network of sensors to get even more information. If the house falls down, we have got hand-held devices that can be used over the ruins to pick out where the embedded（嵌入的）sensors are hidden to get some information about how the villa collapsed. Also, we can get information about anyone who may be around, so it potentially becomes a tool for rescue.” The aim of the passage is to ________.
| A．report a piece of interesting news |
| B．promote tremor-resistant homes |
| C．inform us of the nanotechnology development |
| D．tell us something about a tremor-resistant home |
The villa can resist earthquakes because _______.
| A．it will be built on a special place |
| B．the cracks in its walls can be healed by the polymers |
| C．the special particles can make its walls stronger |
| D．the intelligent sensor network can tell people where there is a crack |
If the tremor-resistant home falls down, _______.
| A．rescue work can be done more quickly and accurately |
| B．the intelligent sensor network will stop working |
| C．no one can be hurt in the earthquake |
| D．a warning signal will be given to other residents |
What Prof Wilkins said suggests that _______.
| A．he is doubtful about the project |
| B．he thinks the tremor-resistant home is perfectly designed |
| C．he is confident in the tremor-resistant home |
| D．the tremor-resistant home still needs to be tested in a real situation |
It can be inferred from the passage that tremor-resistant home _______.
| A．is still being tried out |
| B．is already under construction |
| C．has been in wide use |
| D．will be put into wide use soon |
Faced with a tough job market, fresh graduates are dreaming of running their own businesses instead. But a recent survey has showed that such ambitions lack the required support and remain just that — dreams.
The Shanghai MunicipalEmployment Promotion Center poll of 1,276 graduates in several universities and colleges in the city, released last Friday, showed 59.78 percent of respondents considered the possibility of setting up a company or at least a small store. "But they just stop at the 'thinking' stage," it stated.
Respondents put the top reasons for not going it alone down to a shortage of investment and a lack of business opportunity. They also listed lack of business experience and social networks, the need for advanced study and objections from family members as factors that stood in their way.
More than 90 percent of the interviewees said they would rather take up a job after graduating and then consider starting their own business two or three years down the road.
Guo Bing, a senior student in Shanghai International Studies University majoring in English, decided he wanted to be his own boss last year. But he is looking for a job first. "If I fail to find a satisfying job, I would like to establish a company in exhibition services," Guo said.
The Shanghai native has some relatives working in a local printing plant. With their help, Guo hopes to produce exhibition brochures at a relatively low price. He is also confident that his English language skills can help him do well in the industry.
"Social networking is an important factor leading to business success," Guo said.
Guo said that the shortage of graduate jobs is the main reason driving more university students to set up a business right after their graduation.
Jiang said the university sets up a business guide team made of government officials and professionals. They regularly give training courses to students who show an interest in having their own business. The parents of university graduates are more willing to help their children start up alone, the survey showed" Once you win the support of your family, you have won half the battle," Guo added.Which of the following can be the best title?
| A．A Tough Job Market |
| B．Graduates Who Can Only Dream of Being Boss |
| C．The Ambitious Fresh Graduates |
| D．The Story of Guo Bing |
Which of the following does NOT stop fresh graduates realizing their dreams of being bosses?
| A．The lack of business opportunity and investment. |
| B．The shortage of business experience. |
| C．Less skilled English language. |
| D．Their family members’ objections. |
In the view of Guo Bing, what is the key factor that makes fresh graduates dream of being boss soon after
graduation?
| A．Their family don’t support them. |
| B．Their social networking is not good. |
| C．There are not enough graduate jobs. |
| D．They want to achieve greater success. |
Which of the following statements is NOT true about Guo Bing?
| A．He has started his own business with the help of his relatives. |
| B．English is his major in the university. |
| C．He is trying to find a job which can satisfies him. |
| D．He is a Shanghai native. |
Who is this article mostly intended for?
| A．The parents whose child graduates from university soon. |
| B．Those who will graduate from university. |
| C．Those who want to be bosses. |
| D．The officials who work in the government. |
Brazil is a federation that consists of twenty-six states and one federal district. The biggest majority of Brazil’s population belongs to the Christian religion and almost all of them are Catholics. This is something Brazil inherited(继承) being Portugal’s colony(殖民地).
Historically, the country was a colony claimed by people from Portugal and this made Portuguese the official language. The Portuguese reached Brazil in 1500 and until that moment it was inhabited by semi-nomadic(半游牧的) people. The Portuguese changed Brazil into a country of slaves until 1800, when Maria I of Portugal came to live in Brazil. The Queen did not stay long in Brazil, but during the 20 years of royal presence a lot of changes occurred: commercial ports to United Kingdom were opened; Brazil stopped being isolated(孤立) from other countries. So at the moment of getting the independence on the 7th of September, 1822, Brazil already had the potential to develop. The Brazilian Empire, Pedro I, abolished slavery in 1888 in the face of Princess Isabel. A lot of European people started coming to Brazil and the industry of the country started working. In the 19th and the 20th century as it has been said above foreign people immigrated(移民) to Brazil and basically 5 million European and Japanese people became the residents of Brazil. The beginning of the 20th century was especially marked by the immigration of a lot of Asian people: Japanese, Korean and Chinese immigrants. As a matter of fact Japanese people do not immigrate a lot, and the fact that the Brazilian-Japanese people are the largest Japanese minority in the world does astonish greatly.
The majority of the cultural inherits of Brazil are actually Portuguese, due to the fact that Brazil was Portugal’s colony for a very long time. The southern states mainly consist of European population and the north and the northeast consist of a mixed population including Africans, Amerindians and Europeans. Most of this population is Roman Catholic. No other country in the world has the same amount of Catholics. The modern tendency of Brazil is the growing number of people calling themselves Protestants. Around 7.4% of the population don’t believe any god. Some Brazilians, especially in the northern states are mixed Africans who prefer following the traditional African religions. Only 1.8% of the population chose Buddhism, Islam or Judaism.
Though Brazil always tried to maintain democracy, it was failed several times by the dictatorship（独裁） of Getulo Vargas. This fact could not affect the political situation in the country.Brazil was ruled by Portuguese about ______.
| A．22 years | B．300 years | C．322 years | D．328 years |
Who might block the development of Brazil?
| A．Maria I | B．Pedro I | C．immigrants | D．Getulo Vargas |
The writer mainly tells us the ______ of Brazil in the passage.
| A．religion | B．history | C．culture | D．political situation |
Which of the following statements is NOT true?
| A．Brazil was isolated from other countries when Maria I stayed there. |
| B．The industry of the country started working in 1888. |
| C．Brazil has the largest population of Catholics in the world. |
| D．Some people in Brazil don’t believe any god. |
It can be inferred that Brazil is a country with ________.
| A．western culture | B．modern culture |
| C．traditional culture | D．mixed culture |
Toyota Motor Corp, Japan’s biggest carmaker, said on Friday it will recall 1,489 Lexus sedans (高级轿车) sold in China. "It will take us some time to ship the fuel tanks and vent pipes to China to change those in these Lexus sedans for customers free of charge, if problems are found," said Yang Hongjian, a spokes- woman of Toyota’s China representative office.
The expected recall will affect Lexus LS430 sedans made in Japan from July 29, 2003 to January 14, 2004, the representative office said in a statement. Toyota has not received complaints from Chinese customers, according to the statement. The move will be part of Toyota’s global recall of 18,200 Lexus LS430s. It will be the third car recall in China in two weeks. Although automobile recall is a common practice in developed markets, it remains new to Chinese customers. The Chinese government published long-awaited automobile recall rules on March 15, which will be officially carried out at the beginning of October.
China’s auto market is forecast to reach 10 million units by 2010. Automakers, especially Chinese producers, will face greater pressure from automobile recalls, which could be very costly sometimes, and should be in full preparations, according to the expert. The Japanese carmaker sold 1, 549 Lexus vehicles on the Chinese mainland during the first five months of this year, according to Yang. Lexus sales on the mainland reached 4,000 units last year, up from 1,600 units in 2002. (China Daily July 3, 2004)What can we learn from the text?
| A．Chinese customers are not satisfied with Toyota Lexus LS430 sedans. |
| B．Chinese car market has seen car recalls three times so far. |
| C．Toyota will have a worldwide recall of Lexus LS430 sedans. |
| D．Toyota Motor start to recall Lexus Sedans due to the problems with fuel tanks. |
The carmakers were unwilling to recall their cars in the past mainly because ______.
| A．they were not fully prepared |
| B．they couldn’t afford the cost for their car recalls |
| C．their products could not meet the required standard |
| D．there were no related rules and little pressure |
It is implied in the passage that ______.
| A．sales of homemade automobiles will grow even faster |
| B．automobile recalls will take place in China more frequently |
| C．China’s car market is forecast to be the biggest by 2010 in the world |
| D．Toyota is likely to sell the most Lexus Sedans in China in the future |
Which of the following is the best tide of this passage?
| A．Toyota to Recall Its Lexus Sedans Sold in China |
| B．China Prepares to Recall Cars |
| C．The Problems in China’s Car Market |
| D．Costly Japanese Car Recalls |