Since the gene, called DAF-16 in worms, was found in many animals and in humans,
题型：不详难度：来源：
“We wanted to find out how normal aging is being governed by genes and what effect these genes have on other traits, such as immunity,” said Robin May of the University of Birmingham, who led the study.
Populations across the world are aging at a surprising pace, bringing potentially big challenges for health and social care systems. A study by Danish scientists last year found that half of babies born in the rich world today will live to celebrate their 100th birthdays. Scientists are eager to find out how people age to try to develop drugs to help them stay healthier as their lives extend.
“What we have found is that things like resistance and aging tend to go hand in hand,” May said in an interview.
May’s team compared longevity, stress resistance and immunity in four related species of worm. They also looked for differences in the activity of DAF-16 in each of the four species, and found that they were all quite distinct.
May said DAF-16 was active in most cells in the body and was very similar to a group of human genes called FOXO genes, which scientists believe play a role in the aging process.
“The fact that subtle（微妙的）differences in DAF-16 between species seem to have such an impact on aging and health is very interesting and may explain how differences in lifespan and related traits have arisen during evolution,” May said.
71. In which section may the text appear in a newspaper?
A. Education. B. Science. C. Entertainment. D. Culture.
72. According to May_________,.
A. resistance has a lot to do with aging
B. FOXO genes can be found in worms
C. genes play the same role in different species
D. new drugs will change the genes in older people
73. What can we know from the third paragraph?
A. New ways have been found to affect aging.
B. Babies in the rich world will all live longer.
C. Present social care systems are poorly managed.
D. Aging populations are causing more challenges.
74. From the text we know that DAF-16.
A. is a gene that is only found in worms
B. can make people live longer
C. has an effect on aging and immunity
D. has been quite familiar to scientists
75. What can be the best title of the passage?
A. Scientists Find Gene Linked to Aging
B. Population Aging Faster than Expected
C. How to Make People Live Longer
D. Gene Determines How Long We Live
答案
解析
举一反三
British and Canadian experts say drugs could attack the parasite（寄生虫） causing the illness needs to survive. They say the drug could be ready for human medical test in about 18 months.
The disease, spread by the bite of a fly, is caused by a parasite attacking the central nervous system. It has similar symptoms（症状） to malaria（疟疾）, making it difficult to diagnose. Left untreated, it moves to the brain, resulting in mental confusion and final death
The "breakthrough" came at the University of Dundee in Scotland, where scientists were offered money to research diseases ignored by major drugs companies.
Professor Paul Wyatt, director of the programme, said: "This is one of the most significant findings made in recent years in terms of drug discovery and development for ignored diseases."
He said the research, published in the journal Nature, represented "significant progress" in the development of a full blown drug against the disease.
The World Health Organization said there are between 50,000 and 70,000 cases of the disease a year, with a further 60 million people at risk of infection.
The research in Dundee was backed by partners at the University of York in England and the Structural Genomics Consortium in Toronto, Canada. The two drugs currently available to treat sleeping sickness both have problems. One is with side effects that kill one in 20 patients and the other is costly, only partially effective and requires long-time hospital treatment, the scientists said.
小题1:The word backedin the last paragraph probably means_____.
| A．conducted | B．supported | C．believed | D．managed |
| A．about 60000 people died of the disease each year |
| B．about 60000 people were cured of the disease each year |
| C．600 million people are likely to get infected |
| D．the disease is spreading fast in Africa |
| A．in the journal Nature |
| B．in a newspaper of the University of Dundee |
| C．in a book about flies |
| D．in a newspaper about medicine |
| A．big drug companies play an important role in the research of the new drug |
| B．people who get infected with the disease are mentally disturbed |
| C．among 200 people infected with the disease, 5 may die because of the old drug |
| D． Professor Paul Wyatt may be a professor at the University of York |
The research, from the University of Alberta in Canada, showed that when eggs come in contact with stomach enzymes(酶) they produce a protein that acts in the same way as Ace inhibitors, but more work is needed to show the effects outside a lab and in the human body．
Earlier this month, British researchers declared that, contrary to popular beliefs, it is healthy to go to work on an egg．They concluded that the type of cholesterol (胆固醇) found in eggs has little effect on increasing heart disease risks．
Researcher Professor Bruce Griffin, from the University of Surrey, said:“The wrong beliefs linking egg eating to high blood cholesterol and heart disease must be corrected ．The amount of fat in our diet has an effect on blood cholesterol that is several times greater than the relatively small amounts of cholesterol found in eggs．The UK public do not need to be limiting the number of eggs they eat．They can be encouraged to include them in a healthy diet as they are one of nature’s most nutritious foods．”
The British Heart Foundation dropped its three-egg-a-week limit in 2005．However, almost half of Britons believe the limit still applies．
小题1:From the text we know that Ace inhibitors are ．
| A．a kind of medicine | B．a kind of protein |
| C．a kind of illness | D．a kind of food |
| A．are the most nutritious food． |
| B．have no effect on blood cholesterol |
| C．can be included in a healthy diet |
| D．are forbidden to be eaten in the UK |
| A．drugs to lower blood pressure will be replaced by eating eggs |
| B．stomach enzymes mixed with eggs can cure heart diseases |
| C．most Britons agree the three-egg-a-week limit should be dropped |
| D．about 50% of Britons think eating an egg a day is bad for their health |
| A．to introduce scientific findings about eggs |
| B．to introduce a medicine made from eggs |
| C．to tell people how to lower their blood pressure |
D．to advise people to eat as ma ny eggs as possible |
C.
“An apple a day keeps the doctor away.” Similarly, if we drink a little more water ever day, we may find that we need to go to the doctor a lot less often. A healthy diet is made up of water and a great many different kinds of foods. We know that healthy foods like fruits, vegetables and fish, are important as they provide us with energy and fibre, without giving us too much fat and sugar. But why is water important?
The human body needs water to survive. Water is important as it carries poisons and waste out of our bodies. However, doctors advise us to drink plenty of water, much more than the small amount we need to stay alive.
Some doctors believe that water is important for our health in all kinds of ways. They believe that a great many illnesses and health problems stars as a result of dehydration—a lack(缺少) of water in the body. Most people are dehydrated (脱水)at least some of time, although they probably don’t know it. It is surprising to learn that if we feel thirsty, we are already in the first stages of dehydration. In fact, we are advised to drink water before we feel thirsty.
These doctors think that health problems such as headaches, high blood pressure and asthma could be helped if people drink more water. They also believe that drinking more water can help people who are overweight. Water contains no calories so it will not make us put on weight. If we drink water, we will probably drink less sugary soft drinks such as Coca-cola. Doctors also believe that drinking more water may stop people from overeating. They say that many people think that they are hungry when they are, in fact, thirsty. Doctors suggest, therefore, that we eat less food and drink more water.
There are still many health problems that cannot be solved by drinking water, so we should not stop going to seeing the doctor completely. However, if we make a decision to drink water every day, we may find that we need to go to the doctor a lot less often.
63. We need _____for a healthy diet.
A. fibre B. food C. water D. Water and different foods
64. From the text, we know water can carry_________.
A.energy and fibre in our bodies
B.fruit, vegetables and fish in our bodies
C.sugar and fat out of our bodies
D.poisons and waste out of our bodies
65. Lack of water caused people to put on weight too much because_______.
A.they think they are hungry and eat too much
B.they think they are thirsty and eat less
C.water has no calories
D.it makes them hungry
66. Which of the following isn’t mentioned in the passage?
A.Fruit provides us with energy and fibre.
B.Some healthy problems start because of a lack of water.
C.Drinking more water may stop people from overeating.
D.The amount of water a person should drink in a day.
A total of 606, 100 mainland tourists visited Taiwan in the past year, with each spending nearly $1, 800 on the island, including accommodation and shopping, Shao Qiwei, chairman of the Beijing-based Association for Tourism Exchange Across the Taiwan Straits, said on Friday.
“We see good cooperation between tourism industries across the Straits taking shape,” Shao said. Since July 2008, when Taiwan first opened to mainland tourists, about 660, 000 mainland tourists have visited the island and spent $1.13 billion there, benefiting local transportation as well as the retail, entertainment and health industries.
In four months starting August last year, mainland tourists spent $65.72 million through UnionPay payment cards, figures from mainland bankcard association China UnionPay showed.
“Years of isolation between the two sides have made Taiwan an attractive place for mainland tourists,” said Zheng Lijuan, deputy (副的) general manager of CITS International MICE Co. Ltd.
But under the impact of H1N1 flu since May, the number of mainland tourists to Taiwan had also dropped sharply, leading to industry insiders（内部的人）casting doubt as to whether the goal of attracting 600, 000 mainland tourists to Taiwan in 2009 could be achieved.
Despite the unfavorable conditions, a string of relaxed rules last year have spurred (刺激) the interest of mainland tourists in visiting Taiwan.
In the past year, Taiwan has opened to mainland residents in 25 provinces, up from the initial 13 provinces. Relaxed rules have also allowed five tourists to form a group to visit Taiwan, instead of the initial requirement of at least 10 tourists. Mainland tourists can also stay in Taiwan for a maximum of 15 days, instead of the initial 10 days.
Combined with mainland business groups, more than 900, 000 mainland travelers visited Taiwan in 2009, Christine Lai, director of the Taiwan Strait Tourism Association, told China Daily.
Without releasing the goal for this year, Lai expressed hopes that mainland tourists would head to Taiwan on second or even third visits.
66. Why do mainlanders like to visit Taiwan?
A. Taiwan is a very beautiful island.
B. There are many shops, malls and bookstores in Taiwan.
C. The accommodation and transportation are very good in Taiwan.
D. Years of isolation between Taiwan and mainland makes it an attractive place.
67. What was the original goal of mainland tourists to Taiwan in 2009?
A. 660, 000 B. 606, 100 C. 600, 000 D. 900, 000
68. The number of mainland tourists to Taiwan in 2009 was fulfilled because .
A. the residents of 25 provinces could visit Taiwan
B. mainland tourists could stay in Taiwan for 15 days
C. the Chinese government made a string of relaxed rules
D. there were no impacts of H1N1 flu in Taiwan and mainland
69. We can infer from the text that .
A. there may be a goal for Mainland tourists visiting Taiwan in 2010
B. Chinese mainland tourists can stay in Taiwan for a maximum of 10 days
C. the global economic downturn had not influnced Taiwan’s travel industry
D. H1N1 flu had not made the number of the mainland tourists to Taiwan drop
70. Which of the following would be the best title for the text?
A. Visitors to Taiwan will slowdown
B. Mainland tourists to Taiwan hit mark
C. More and more mainland tourists visit Taiwan
D. H1N1 and global economic influence Taiwan’s travel industry
During the past ten years or so, I have been suffering from terrible headache. It seems to be getting from bad to worse these days . Last night I got a sudden pain in my head. It was so terrible that I could hardly bear(忍受)it. Although I swallowed all kinds of pain-killers(止痛药), I didn’t feel any better, It seemed that there was nothing I could do but phone for a doctor.
One of our neighbours happened to be with us. He was not a doctor, but he timidly(胆怯地) offered his help, saying “Do you mind if I tried acupuncture on you? These needles may possibly do you some good.” I agreed. In a moment, he had taken out a few needles from his purse. Without a moment’s delay, he fixed a few needles into the skin on my head here and there, Before long, I felt thoroughly relieved(缓解疼痛).
Just then, the doctor sped through my house and said, “Where is our patient?”
“Sorry, Doctor, You are too late, It’s killed!” I answered in delight.
It’s miracle , isn’t it?
小题1:The underlined phrase from bad to worse in the second paragraph refers to the man’s .
| A．character | B．life | C．headache | D．health |
| A．the neighbour fixed needles on his own head |
| B．The neighbour is a kind-hearted person. |
| C．The man’s pain was killed before the doctor arrived |
| D．Soon after the acupuncture, the man was completely recovered. |
A．t he pain was killed because the doctor came late |
| B．the man was killed because the doctor came too late |
| C．before the doctor came the man’s headache was already cured |
| D．it was too late and the man had gone away |
| A．everyone knows that acupuncture is a miracle |
| B．the neighbour wanted to use acupuncture on every patient |
| C．the effect of acupuncture on the man was unbelievable |
| D．the patient did not believe in acupuncture |
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