题目内容


C
Latest data shows an estimated 39.5 million people around the world are living with HIV, the virus that causes AIDS. According to the report, this means every eight seconds somebody in the world is infected with HIV, resulting in 11,000 people becoming newly infected every day.
The director of UNAIDS, Peter Piot, says most of the new infections, nearly two-thirds, are in Sub-Saharan Africa. But, the biggest increases are in Eastern Europe and Central Asia, where infection rates have risen by more than 50 percent since 2004. He says 2.9 million people died from AIDS-related illnesses this year, the highest number ever.
UNAIDS senior epidemiologist(流行病学家), Karen Stanecki, says infections are rising in countries where HIV prevention programs have not adapted to the changing nature of the epidemics(流行病).  Stanecki noted,"In Thailand, one of our past success stories, a large percentage of new HIV infections are occurring in people considered to be low risk. One third of new infections are among married women."
It says data shows increased use of condoms has resulted in drops in HIV prevalence(流行) among young people between 2000 and 2005 in a number of African countries, including Botswana, Kenya and Zimbabwe. Nevertheless, the report notes young people between the ages of 15 and 24 account for 40 percent of new HIV infections. It finds the risk behavior, such as injecting drug use, homosexuals, is a factor of concern in many regions of the world, especially in Asia, Eastern Europe and Latin America.
The report notes the emergence (出现) of injecting drug use as a factor of HIV in Kenya, Tanzania, Nigeria and South Africa is a recent development in Sub-Saharan Africa.
51. According to the news report, how many people are newly infected with HIV a year?
A. 39.5 million.            B. 2.9 million.             C. 3.5 million.              D. 4 million.
52.   The highest rate of new HIV infection is in ________.
A. Sub-Saharan Africa                                      B. Eastern Europe
C. Central Asia                                                 D. both A and B
53. The underlined word “noted” in the third paragraph mean?
A. specially mentioned                                     B. said angrily
C. fully noticed                                                D. uttered weakly
54.   Which of the following statements is Not True?
A. Most of new infections of HIV are among married women.
B. Two fifths of the new infections are among young people aged 15 to 24.
C. The risk behavior, such as injecting drug use and homosexuals, exists in many parts of the world.
D. Injecting drug use occurs in many African countries.
55.   What is the main idea of the new report?
A. More and more women in the world are getting new HIV infection.
B. The AIDS epidemic continues to grow in the world.
C. The AIDS epidemic has been reduced in the world.
D. No one can tell when the AIDS epidemic will be completely controlled.


【小题1】D
【小题2】A
【小题3】A
【小题4】A
【小题5】B

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The German shepherd runs off and noses around in the grass of Kenya’s Laikipia Plateau. “OK, Oakley,” the dog’s handler orders, “Find it!”

Oakley sniffs (嗅) until he comes to a bush, then stops, sits, and looks up at his handler. She bends to see what he has found: the waste of an endangered African wild dog. “Good dog!” she praises. The handler pulls a tennis ball from her pocket. Oakley jumps for his reward.

“He doesn’t actually want the waste,” says Aimee Hurt, a founding member of the U.S.-based group Working Dogs for Conservation. Hurt is in Kenya to train both Oakley and his handler. “He finds it so he can play with his ball. We’re the ones who want the waste.”

Detection dogs are sometimes taught to locate actual animals. Black-footed ferrets (雪貂) have been studied with their help. But more often the dogs learn to locate the waste of creatures such as bears, wolves and mountain lions.

What the dogs find provides scientists with data about a species. Scientists can use the DNA collected from animal waste to identify individuals, sex, and population sizes — all without ever seeing the animal itself. “It can take years to gather this kind of information if you have to trap animals,” Hurt explains.

Waste analysis might make a huge difference when wild species are accused of attacking domestic livestock (家畜). Hurt says, “A good detection dog will find the waste so we can see what the animal is actually eating.” This may help reduce problems between people and wildlife.

The underlined word “She” in Paragraph 2 refers to  “_____”.

    A. the German shepherd                B. an African wild dog

    C. Aimee Hurt                        D. the handler

Oakley is interested in finding the waste because _____.

    A. he wants to study endangered animals

    B. he can get a tennis ball to play with

    C. he wants to eat it   

    D. he wants to play with it

Which of the following is TRUE according to the passage?

    A. Trapping animals is not difficult.

    B. People are making efforts to protect the environment.

    C. Detection dogs attack domestic livestock frequently.

    D. Collecting animal waste is a good way to gather information.

What is the main idea of the passage?

    A. Detection dogs can help scientists study wildlife.

    B. Detection dogs can defend wildlife.

    C. Detection dogs can help the police catch the criminals.

    D. Detection dogs can help local people defend domestic livestock.

If it looks like a fish and swims like a fish, it usually is a fish. But not the new, lifelike robot fish developed by UK scientists, which have been swimming around the London Aquarium(水族馆) as they wait for their release off northern Spain in 2011.

Equipped with tiny chemical sensors(传感器),the fish will collect data on pollution in the port of Gijón and wirelessly send the information back to the control center.

“It’s a little lab onboard the fish,” said Rory Doyle, a scientist at BMT Group. The robots were designed, and are being built, by professor Huosheng Hu and his team at the University of Essex, UK.

The sensors will search for dangers such as chemical waste and will allow officials to map in real time the sources and effects of pollution, Doyle said. w_w w. k#s5_u.c o*m

He and his colleagues chose a fish design because hundreds of millions of years of evolution(进化) has created an energy-efficient creature, he said. “Nature has done it very, very well.” But copying such a successful design comes at a cost: nearly 29,000 u.s. dollars per robot. m

The fish, therefore, will be built “robust” enough to handle any possibilities, Doyle said. They can’t get caught in nets easily, for instance, and the tracking systems inside can help the robot fish avoid crashes with boats and other things in the way.

So far, it also seems unlikely the robot fish will be mistaken: At the London Aquarium, sharks swim away from the fake fish, possibly because they find the robots electromagnetic fields(电磁场) unpleasant, Doyle said. w_w w. k#s5_u.c o*m

At the same time, scientists are working to ensure that the sounds of the robots and other factors don’t disturb the natural environment, he added.

The robot fish was developed in order to_______. w. k#s5_u.c o*m

A.be displayed on a robot exhibition in Spain

B.be sent to London Aquarium as a gift

C.get information of ocean pollution

D.collect data on the fishes in deep sea

According to Doyle, the robot was designed into fish shape in order to_______.

A.cut the cost of the robot

B.make the robot beautiful

C.reduce the sounds of the robot

D.make the robot work better with less energy

We can infer from the passage that the robot fish______. k#s5_u.c o*m

A.would send pictures of sea life back

B.would not be looked on as a real fish by fishes

C.could swim much faster than fishes like sharks

D.could help find new forms of energy in the sea

The underlined word “robust” in Paragraph 6 probably means_____.

A.small and light    B.big and heavy

C.smooth and soft    D.strong and smart

While still in its early stages, welfare reform has already been judged a great success in many states-at least in getting people off welfare. It’s estimated that more than 2 million people have left the rolls since 1994.

In the past four years, welfare rolls in Athens County have been cut in half. But 15 percents of the people who left in the past two years took jobs that paid less than $6 an hour. The resuit: The Athens County poverty rate still remains at more than 30 percent-twice the national average.

 For advocates (代言人) for the poor, that’s an indication that much more needs to be done.

“More people are getting jobs, but it’s not making their lives any better,” says Kathy Lairn,a policy analyst at the Center on Budget and policy Priorities in Washington.

A center analysis of US Census data nationwide found that between 1995 and 1996, a greater percentage of single, female-headed households were earning money on their own, but that average income for these households actually went down.

But for many, the fact that poor people are able to support themselves almost as well without government aid as they did with it is in itself a huge victory.  

“Welfare was a poison. It was a toxin(毒素) that was poisoning the family,” says Robert Rector, a welfare?reform policy analyst. “The reform is changing the moral climate in low?income communities. It’s beginning to rebuild the work ethic(道德观), which is much more important.”

Mr. Rector and others argued that once “the habit of dependency is cracked, ”then the country can make other policy changes aimed at improving living standards.

13.From the passage, it can be seen that the auther .      

A.believes the reform has reduced the government’s burden

B.insists that welfare reform is doing little good for the poor

C.is overenthusiastic about the success of welfare reform

D.considers welfare reform to be fundamentally successful

14.Why aren’t people enjoying better lives when they have jobs?

A.Because many families are divorced.        B.Because government aid is now rare.

C.Because their wages are low.               D.Because the cost of living is rising.

15.What is worth noting from the example of Athens County is that .      

A.greater efforts should be made to improve people’s living standards

B.15 percent of the people there have been employed for two years

C.50 percent of the population no longer relies on welfare

D.the living standards of most people are going down

16.From the passage we know that welfare reform aims at_______ .

A.saving welfare funds                       B.rebuilding the work ethics(观念)

C.providing more jobs                        D.cutting government expenses

Fear may be felt in the heart as well as in the head, according to a study that has found a link between the cycles of a beating heart and the chance of someone feeling fear.

Tests on healthy volunteers found that they were more likely to feel a sense of fear at the moment when their hearts are contracting(收缩) and pumping blood around their bodies, compared with the point when the heartbeat is relaxed. Scientists say the results suggest that the heart is able to influence how the brain responds to a fearful event, depending on which point it is at in its regular cycle of contraction and relaxation.

Sarah Garfinkel at the Brighton and Sussex Medical School said: "Our study shows for the first time that the way in which we deal with fear is different depending on when we see fearful pictures in relation to our heart."

The study tested 20 healthy volunteers on their reactions to fear as they were shown pictures of fearful faces. Dr Garfinkel said, "The study showed that fearful faces are better noticed when the heart is pumping than when it is relaxed. Thus our hearts can also affect what we see and what we don't see - and guide whether we see fear."

To further understand this relationship, the scientists also used a brain scanner(扫描仪) to show how the brain influences the way the heart changes a person's feeling of fear. “We have found an important mechanism by which the heart and brain ‘speak’to each other to change our feelings and reduce fear," Dr Garfinkel said.

"We hope that by increasing our understanding about how fear is dealt with and ways that it could be reduced, we may be able to develop more successful treatments for anxiety disorders, and also for those for those who may be suffering from serious stress disorder."

1.What is the finding of the study?

A.One's heart affects how he feels fear.

B.fear is a result of one's relaxed heartbeat.

C.fear has something to do with one's health.

D.Ones fast heartbeats are likely to cause fear.

2.The study was carried out by analyzing _______.

A.volunteers' heartbeats when they saw terrible pictures

B.the time volunteers saw fearful pictures and their health conditions

C.volunteers' reactions to horrible pictures and data from their brain scans

D.different pictures shown to volunteers and their heart-brain communication

3.Which of the following is closest in meaning to "mechanism" in Paragraph 6?

A.Order.            B.system.           C.machine.          D.treatment.

4.This study may contribute to _______.

A.treating anxiety and stress better

B.explaining the cycle of fear and anxiety

C.finding the sky to the heart-brain communication

D.understanding different fears in our hearts and heads

 

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