题目
题型：不详难度：来源：
A study by a team at Johns Hopkins University in Baltimore, Maryland, involving squirrel monkeys and baboons (狒狒) found that both species suffered permanent damage to key cells, which are lost in Parkinson’s, after receiving three low doses（剂量）of Ecstasy at three-hour periods.
The study is particularly important because baboons are one of the best animal models for the human brain. George Ricaurte, who led the research, said that the widespread abuse of drug might have caused severe damage. “The most troubling result is that young adults using Ecstasy may be increasing their risk of developing Parkinsonism as they get older.”
Alan Leshner, a former director of the US National Institute on Drug Abuse, said, “This study emphasizes the multi-aspect damage that Ecstasy causes to users. We’ve long known that repeated use damages brain cells. But this study shows that even very occasional use can have long-lasting effects on many different brain systems. It sends an important message to young people: don’t experiment with your own brain.”
Janet Betts, a mother whose teenage daughter Leah died after a single Ecstasy tablet in 1995, said, “This comes as no surprise. But people can’t see the effects at first, and they say it won’t happen to them. We’ll see the symptoms later, just as we have with s
moking.”小题1: The article is intended to ______.
| A．explain the bad effects of drugs on people’s health |
| B．warn young people of the risk of taking the drug Ecstasy |
| C．persuade people out of such bad habits as smoking and using drugs |
| D．tell us the links between the drug Ecstasy and Parkinson’s disease |
| A．won’t cause serious brain damage |
| B．can permanently destroy one’s brain cells |
| C．will result in immediate symptoms |
| D．may bring on Parkinson’s at once |
| A．Because their brain is similar to human being’s. |
| B．Because these animals usually take drugs. |
| C．Because these animals will soon get well after the experiment. |
D．Because there is a  model in the animals’ brains. |
| A．Leah died after a single Ecstasy tablet in 1995 |
| B．taking drug has the same symptoms as smoking |
| C．occasional use of the drug can have long-lasting effects on the brain systems |
D．people have long known that re peated use of the drug damages brain cells |
答案
解析
核心考点
试题【A single night of taking the drug Ecstasy (摇头丸) can cause serious brain damage a】；主要考察你对题材分类等知识点的理解。[详细]
举一反三
If a person isn"t sensitive to another"s feelings, there is no way he or she can be tactful．Yesterday, my 5-year-old brother proudly announced that he had cleaned the screen on our television set．Unfortunately, he used furniture polish, which produced an oily film on the television screen．My mother smiled arid thanked him for his efforts—and then showed how to clean the screen properly．Her sensitivity enables my brother to keep his self-respect．Yet, sensitivity alone does not make tact．
"Tactfulness" also requires "truthfulness"．Doctors, for example must be truthful．If a patient has just been disabled in an accident, a tactful doctor will tell the truth—but express it with sensi
tivity．The doctor may try to give the patient hope by telling them curing techniques under study or about advanced equipment now available．Doctors must use tact with patients" relatives as well．Instead of bluntly saying, "Your husband is disabled," a doctor might say, "I"m sorry, but your husband has lost feeling in his legs and．．．"Tact should not be confused with trickery．Trickery occurs when a nurse is about to give a patient an injection（注射） and says, "This won"t hurt a bit．" Instead of trickery, the nurse might guarantee the patient that the discomfort of the injection is a small thing compared to the benefits of it．It would also be thoughtful for the nurse to tell the patients about some of these benefits．
Tact is a wonderful skill to have, and tactful people are usually admired and respected．Without tact our society would become an intolerable place to live in．
小题1:The underlined word "crushed" in the first paragraph probably means____．
| A．surprised | B．cheated | C．regretful | D．painful |
| A．sensitive and tactful | B．sensitive but not tactful enough |
| C．truthful but not tactful enough | D．sensitive but trickish |
（The numbers stand for the paragraphs）
We know what our vacation costs us. But do we know what it might cost someone else? It"s true that many poorer countries now depend on tourism for foreign income. Unfortunately, though, tourism often harms the local people more than it helps them.
It might cost their homes and lands. In Myanmar, 5,200 people were forced to leave their homes among the pagodas(佛塔)in Bagan so that tourists could visit the pagodas.
Tourism might also cost the local people their livelihood and dignity. Local workers often find only menial(卑微的)jobs in the tourist industry. And most of the profits do not help the local economy. Instead, profits return to the tour operators in wealthier countries, When the Maasai people in Tanzania were driven from their lands, some moved to city slums. Others now make a little money selling souvenirs or posing for photos.
Problems like these were observed more than 20 years ago. But now some non-government organizations, tour operators and local governments are working together to begin correcting them. Tourists, too, are putting on the pressure.
The result is responsible tourism, or “ethical tourism.” Ethical tourism has people at its heart. New international agreements and codes of conduct can help protect the people"s lands, homes, economies and cultures. The beginnings are small, though, and the problems are complex.
But take heart. The good news is that everyone, including us, can play a part to help the local people in the places we visit. Tour operators and companies can help by making sure that local people work in good conditions and earn reasonable wages.
They can make it a point to use only locally owned hotel, restaurants and guide services. They can share profits fairly to help the local economy. And they can involve the local people in planning and managing tourism.
What can tourists do? First, we can ask tour companies to provide information about the conditions of local citizens. We can then make our choices and tell them why. And while we"re abroad, we can:
Buy local foods and products, not imported ones.
Pay a fair price for goods and services and not bargain for the cheapest price.
Avoid flaunting wealth.
Ask before taking photographs of people.
They are not just part of the landscape!
Let"s enjoy our vacation and make sure others do, too.
小题1: What is probably the best title for the article?
| A．Tourism Causes Bad Effects. | B．Tourism Calls for Good Behavior. |
| C．Vacations Bring a Lot of Fun. | D．Vacations Cost More Than You Think |
| A．Local people were well paid to leave their lands. |
| B．Tourists may stay in hotels opened by local people. |
| C．Local people are mainly provided with low-paying work. |
| D．Tourists could bargain with local people for a reasonable price. |
| A．pay attention | B．take care | C．cheer up | D．calm down |
| A．tourism is not a promising industry |
| B．dream vacations should be spent abroad |
| C．the problems caused by tourism are easy to settle |
| D．tourists should respect local customs and culture |
Across the developing world, around 45% of families had a TV in 1995; by 2005 the number had climbed above 60%. That is some way behind the U.S. , where are more TVs than people, and where people now easily get access to the Internet. Five million more families in sub-Saharan Africa will get a TV over the next five years. In 2005 , after the fall of the Taliban（塔利班）,which had outlawed TV, 1 in 5 Afghans had one. The global total is another 150 million by 2013——pushing the numbers to well beyond two thirds of families.
Television’s most powerful effect will be on the lives of women. In India, researchers Robert Jensen and Emily Oster found that when TVs reached villages, women were more likely to go to the market without their husbands’ approval and less likely to want a boy rather than a girl. They were more likely to make decisions over child health care. TV is also a powerful medium for adult education. In the Indian state of Gujarat, Chitrageet is a popular show that plays Bollywood songs with words in Gujarati on the screen. Within six months, viewers had made a small but significant improvement in their reading skills.
Too much TV has been associated with violence, overweight and loneliness. However, TV is having a positive influence on the lives of billions worldwide.
小题1: The underlined word “outlawed” in paragraph 2 probably means “ ”.
| A．allowed | B．forbidden | C．offered | D．refused |
| A．Americans used to get access to the Internet easily. |
| B．The world’s TV sets will total 150 million by 2013. |
| C．45% of families in the developing countries had a TV in 2005. |
| D．Over two thirds of families in the world will have a TV by 2013. |
| A．stress the advantages of TV to people’s lives |
| B．persuade women to become more independent |
| C．encourage people to improve their reading skills |
| D．introduce the readers some websites such as Google |
| A．TV Will Rule the World | B．TV Will Disturb the World |
| C．TV Will Better the World | D．TV Will Remain in World |
| A．It is impossible for women in India to get access to TVs now. |
| B．Robert Jensen and Emily Oster are Indian women. |
| C．Women in India are more likely to want a girl than a boy because of the arrival of TV. |
| D．Viewers of a popular TV show can improve their reading skills greatly in half a year. |
Sample inspections conducted on Tuesday found low levels of radioactive iodine in spinach( a kind of green vegetables) planted in Beijing, Tianjin and Henan province --- about 1-3 becquerels per kilogram (Bq/kg), the statement said.
"The contamination level detected is too low to be harmful to public health," it said.
According to health experts, radioactive iodine can accumulate in humans once ingested in high concentrations and increases the risk of thyroid cancer. But it decays naturally within weeks.
Leafy vegetables grown in the open like spinach, lettuce and leek are among the first foods to be tainted by radioactive deposits.
Raw milk is also susceptible to radioactive contamination as livestock feed on grass.
Tests carried out in March showed spinach and milk taken from farms near Japan"s nuclear-stricken area had exceeded(go beyond) government-set safety limits for radiation.
No cases of tainted water or milk have been reported in China but the ministry vowed to further strengthen monitoring.
Wang Zhongwen, a researcher at the China Institute of Atomic Energy"s radiation safety department, told China Daily on Wednesday that currently China only had the means to conduct food radiation tests in a few regions.
The statement also said that recent rain in Beijing and Tianjin meant radioactive substances could have fallen on vegetables.
Chen Jicang, a vegetable dealer in Beijing, said on Wednesday that concerns are growing among consumers, businesses and governments across the world.
"We have yet to see any impact on our business from the radiation, but we will keep a close eye on how the issue develops," he said.
He added that most vegetables consumed in Beijing are produced locally, and he might switch to other varieties if spinach sales suffer.
Yang Guoshan, a researcher of radiation medical science at the Academy of Military Medical Sciences, said people could safely eat products that contain low levels of Iodine-131.
"The radiation level is so low that residents don"t need to spend any extra effort on cleaning them," he said.
Gao Jie, a 52-year-old resident in Tianjin said she is deeply worried because spinach is a staple part of her family"s diet.
"If spinach is radioactive, is there any possibility that other types of vegetables are safe?"
Trace levels of radioactive isotope cesium-137 and -134 were detected in the air in 21 provinces and regions on Wednesday, up from 17 on Tuesday, according to China"s National Nuclear Emergency Coordination Committee.
小题1: What does the underlined word mean in para 1?
| A．protected | B．contained | C．polluted by dangerous substances | D．tested |
| A．Because tests have been carried out there. |
| B．Raw milk is sensitive to radioactive contamination as livestock（家畜）feed on grass. |
| C．The amount of radioactive substances goes beyond the safe limits for radiation. |
| D．Japan is a nuclear-stricken area. |
| A．a magazine | B．CCTV news | C．a journal | D．a novel |
| A．Consumers became concerned about the safety of vegetables. |
| B．People need to clean vegetables completely before cooking because of radiation. |
| C．Food and water have to be tested since the end of March in 14 mainland regions |
| D．Low levels of radioactive iodine has been found in spinach in Tianjin |
| A．How the radioactivity came into being |
| B．What we should do in face of radioactivity. |
| C．Radioactivity has no side effect on human being. |
| D．Home-grown food has been affected by radioactivity. |
This was the conclusion of a team of scientists from China"s State Forestry Administration and the World Nature Fund．
The South China tiger, also known as the Chinese tiger, is native to southern China．In the 1950"s, there were over 4000 tigers found in mountain forests in the country．But due to the destruction of their natural habitat and uncontrolled hunting, it has been pushed on to the list of the world"s top ten most endangered species．
Sixty-six of the big cats can be found in the cages of a dozen zoos around China．But they are nothing like their wild cousins．They have lost their natural skills such as hunting and killing．If they were set free they could not look after themselves．
"Breeding has damaged the quality of the species", said Pei Enle, deputy director of the Shanghai Zoo．
To reintroduce the species into the wild, the country started a programme to send five to ten young tigers to South Africa．Four of them have already arrived．Progress has been made as two elder tigers have recovered some of their instincts（本能）and can hunt wild animals by themselves at the African base．
" South Africans are very experienced in reintroducing big animals to the wild．The country has very good natural conditions for the tigers to learn in", said Lu Jun, office director of the National Wildlife Research and Development Center．" We tried in Fujian Province, but it was not successful as there was not a complete eco-chain（生物链） and there was a lack of space．"
The tigers should return to China in 2007 when the reservations in Fujian are ready．
1．What is the main reason for the South China tiger becoming one of the world"s top ten most endangered species?
A．Because it has lost its n
atural instincts． B．Because there is not a complete eco-chain．C．Because there is no space for it． D．Because uncontrolled hunting has destroyed its natural living conditions．
2．How is the programme of sending several tigers to South Africa getting on?
A．Its effect still remains to be seen．
B．Two tigers can already compete with their wild cousins．
C．Some of the tigers are already on the road to recovering their natural skills．
D．The tigers should be able to recover their instincts completely by 2007．
3．By saying " but they are nothing like their wild cousins", the writer means that ______．
A．they are no longer feared by other wild animals
B．they don"t know how to hunt or kill
C．a complete change has resulted in the species because of breeding
D．to reintroduce them into the wild has become an urgent task
4．What is the purpose of sending young tigers to South Africa?
A．To help the tigers recover their ability to live in the wild．
B．To provide them with a better environment．
C．To get the tigers to go on a tour．
D．To find a complete eco-chain for them．
5．Which one is not the reason for South Africa being chosen as the training place?
A．Because the tigers can hunt wild animals by themselves at the African base．
B．Because South Africans are skilled at dealing with the tigers．
C．Because there is a complete eco-chain and enough space there．
D．Because the country has good natural conditions for the tigers to learn in．
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