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An experimental treatment that causes AIDS patients to develop a dangerously high fever has shown promise as a way of prolonging and improving the patients’ life.Called the Biologic-HT System, the new treatment lets doctors extract the blood of a patient and heat it before circulating it back into the body. The heated blood causes the patient’s body temperature to rise above 42 degrees Celsius. In people with AIDS, that increase in temperature kills some heat-sensitive HIV, the virus, most doctors say, causes AIDS.
Heating the blood of AIDS patients has been tried before, say doctors. But during previous attempts, the treatment induced deadly chemical changes in the blood. The Biologic-HT System prevents those changes from happening, allowing the heat to kill viruses with few ill side effects.
The new heat treatment cannot be considered a cure for Aids, says president of the company that makes the system. He says the treatment doesn’t kill all traces of the virus. However, it kills enough virus particles to give a patient’s immune system a reprieve in its deadly duel with HIV.
Tests of the Biologic-HT treatment began on 36 patients earlier this year. The treatment takes about four hours, and the patient normally feels well enough to leave the hospital or clinic the following morning.
So far, the patients who have had the treatment say they feel better and have developed no new opportunistic infections—disease that strike people with damaged immune systems. The patients also have experienced about a 50 percent increase in the number of T cells in their bodies. T cells are key disease-fighting cells of the immune system and the main target of HIV.
1.This passage is mainly concerned with ____________.
A． a way for treating AIDS
B． a heat-sensitive virus
C． the immune system of the human body
D． the function of high temperature
2.The blood of the patient___________.
A． is heated with a single injection
B． is heated by being circulated at a higher rate
C． is taken out from the body and then circulated through a heating system.
D．is taken out from the body, heated outside and then put back into the body.
3.The previous attempts to use high temperature for treating AIDS failed because they_________.
A．caused chemical changes
B．could not kill HIV effectively
C．resulted in deaths
D．killed both HIV and healthy cells
4.According to the passage, the new treatment___________.
A．can kill all the HIV viruses
B．cannot eliminate the viruses completely
C． can double the number of disease-fighting cells
D．can reconstruct the patient’s immune system.
5.The result of the experiment seems to be ___________.
A．disappointing B．incomplete C．successful D．surprising
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Labor force is defined as being the total number of people who are available to work and earn income. This definition includes everyone who is employed or seeking paid employment, so it includes employers and the self-employed. Labor is one of the country's resources which can be combined with other resources to produce the goods and services wanted by the community.
Although the size of the workforce depends a great deal on the size of the total population, there are several other influences which also affect it. The age distribution (分布) of the total population has a very marked effect on the available workforce. If the population has a high proportion of very young people or of those too old to work, then the available workforce would be lower than if there were a balanced spread age distribution. If the population naturally grows rapidly, the number of births greatly exceeds (超出) the number of deaths then as a total population increases proportion of the workforce declines.
Sometimes a population is described as aging which means that the birth rate is either falling or growing very slowly, and as people retire from the workforce there are insufficient numbers of young people entering it to replace those who are leaving it. In that situation the population is top-heavy with older people. So the percentage of the population in the workforce declines when there is either a rapid increase in births or a falling birth rate.
The age distribution of the population has several important effects on the economy. If the population is aging and there is an increase in the number of people retiring without a corresponding increase in the number entering the workforce, this raises the problem of the ability of the economy to provide a reasonable level of social services to the retired group. If the aged are to be cared for in special homes, finance must be available for that purpose. If the size of the workforce is small relative to the total population, then the government tax revenue (税收) is relatively low and either the government has less money available to it or the workforce members have to be taxed more heavily.
In the passage “labor force” is defined as ___________.
A．people who are available to work and earn income
B．self-employed people only
C．people who are looking for an employment
D．employers who create job opportunities
The conclusion which can be drawn from the second paragraph is that___________.
A．a natural growth of population leads to a balanced workforce
B．a large population does not necessarily mean a higher proportion of workforce
C．the larger the population, the higher the proportion of the workforce
D．the workforce will be lower, if the population has a balanced age distribution，
When a population is said to be aging，___________.
A．there are more people retiring than those entering the workforce
B．the birth rate must be growing
C．there should be an oversupply of workforce
D．There are more people entering the workforce than those retiring
The population which is top-heavy with older people ___________ of a country.
A．leads to the high rate of unemployment
B．results in low tax on the workforce members
C．affects employees’ incomes
D．places pressure on the economy
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Teenagers who drink alcohol are at higher risk of becoming victims of violence, a Cardiff University study has found.
A team from the School of Dentistry' s Violence Research Group studied drinking habits in
children aged | 1-16 in England. They found not only a link between drink and violence but also
that children who drank were more likely to be hit, even if they weren' t violent themselves.
The researchers are now calling for measures to prevent alcohol misuse to reduce injury
risk. Current policy focuses on reducing aggression but this research shows that there should be
equal effort to reduce victimization(受害).
More than 4,000 children were surveyed at 13 schools at four local authorities in the North, the Midlands, London, and the South. The study found that 25% of 1 l-year-olds were drinking
monthly and 3.6% daily, with 12.8% admitting to getting drunk 3 to 5 times a year. By the age
of 16, 40% were drinking weekly and 6.2% were drinking every day. The research also showed
22.6% of 16-year-olds were getting drunk more than 21 times a year.
The study, which has just been published in the Journal of Adolescence, found a strong
link between frequency of drinking and frequency of hitting other people.
However, children who reported drinking monthly were also three times more likely to be
hit. Adolescents(青少年) who drank but didn't get into fights were more likely to be hit than
those who did fight.
Professor Jonathan Shepherd, who led the research, said a lot of previous alcohol-related
violence work had focused on the offenders rather than the victims. His team is calling for more pre-vention work from parents and teachers in the first two years of secondary school by taking advantage of the "teachable moment", that is, immediately after a student has missed school because of drunkenness.
Previous work by Professor Jonathan Shepherd has shown drinkers may be more at risk of vio-lence because of reduced physical co-ordinatlon ( 配合), poor decision-making in threatening situa-tions and isolation while out late at night.
He said,"This new study seems to be the first to show a direct link between alcohol misuses and victimization. There now needs to be much more effort put into reducing alcohol misuse in order to reduce injury. "
58. The underlined word "aggression" in the third paragraph probably means_____
A. violence B. sad feelings C. bad manners D. drunkenness
59. Drinkers may be more at risk of violence because of all the following EXCEPT __
A. reduced the physical co-ordination
B. isolation while out late at night
C. a higher frequency of hitting other people
D. poor decision-making in threatening situations
60. Which of the following statements is NOT true according to Professor Shepherd' s research?
A. The frequency of children getting drunk increases with age.
B. His previous alcohol-related violence work had focused on the offendersl
C. Some children missed school because of drunkenness.
D. This new study shows a direct link between alcohol misuse and victimization.
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阅读下面短文，从短文后所给各题的四个选项（A、B、C和D）中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
Many parents expect their children to be perfect. By giving up this myth (神话，不可能的事), we may gain something better—the good childhood. Tameka Watkins, ___36__, seems to have a natural skill for___37__. She sits with her ten-year-old ___38___ Cornelious—nicknamed C.D.— each night as he sets about doing his homework, but she doesn’t do it for him. ___39__ he tells her what he is learning, she listens with___40___. An investigation of the National Assessment of Educational Progress found that students like C.D. who __41___ their studies at home have __42__ average reading scores. The opportunity to talk about and to reflect on (思考) what he knows will ___43__ this honor student well through his school years.
While C.D. helps his mother clear the table, they talk about what’s on his__44__. Sometimes it’s his dream of being a police officer. Tameka encourages her son’s “what if” thinking, asks about his idea for the __45__, and ties it to his current (当前的) achievements. “You know, the police __46__solve problems,” she might tell him, “just like you did in ___47__.” And when he visits his mom, who works as an exercise technician, his mother’s liking for her job___48___an example of satisfaction in a self-chosen task.
Takema is___49__ Robert Brooks call “a charismatic (有魅力的) ___50__”, one who helps the child learn about himself. “Children gather ___51___ strength and a resilient (适应能力强的) mind from this loving notice,” he says.
Not overpraised, not __52__ , not constantly rescued—__53___listened to, understood, and supported, C.D. is ___54__ the best possible gift of childhood from his __55___. It is the chance to be himself.
A. that is B. in other words C. for example D. such as
A. parenting B. working C. teaching D. exercising
A. daughter B. son C. student D. granddaughter
A. Whether B. Unless C. Though D. When
A. doubt B. satisfaction C. interest D. surprise
A. analyze B. discuss C. like D. write
A. higher B. lower C. less D. fewer
A. benefit B. make C. do D. trust
A. study B. brain C. mind D. thought
A. homework B. teacher C. future D. family
A. can B. might C. shall D. have to
A. your play B. science class C. language class D. the room
A. takes B. makes C. sets D. gets
A. what B. that C. which D. who
A. teacher B. technician C. adult D. friend
A. inner B. outside C. strong D. full
A. overworked B. overweighted C. overslept D. overprotected
A. nor B. but C. and D. also
A. receiving B. refusing C. giving D. buying
A. class B. school C. society D. mom
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