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Life has changed in Mexico City．Streets normally filled with people are empty．One of the most popular professional soccer teams recently played a game in an empty stadium that can seat more than100,000 people．It's swine （猪）flu that has made life in Mexico City grind to a halt （慢慢停了下来）．
Seemingly out of nowhere, swine flu has caused confirmed deaths in 12 countries as of April 30．It has sent a wave of alarm around the world．Governments are trying to find ways to prevent further out-breaks．The World Health Organization has raised its swine flu global threat level to five out of six．
People may be familiar with bird flu, but they know little about swine flu．Swine flu is a contagious（传染性） respiratory（呼吸的）disease in pigs．It is caused by a type-A influenza virus．
Humans can also catch swine flu．The virus causes regular outbreaks in pigs, but people usually do not catch it．However, there have been cases of the virus spreading to people, and then from one person to another．
The symptoms of swine flu are similar to the common flu．They include fever, lethargy （无精打采）, lack of appetite, coughing, runny nose, sore throat, nausea（恶心）, and vomiting （呕吐）．The high proportion of young adults among the deaths is one of several mysteries about this virus．Most of the dead had lung damage．What caused it is not yet known．
The virus spreads the same way the common flu does．When an infected person coughs or sneezes around another person, the latter is put at risk．People can get the disease by touching something with the flu virus on it and then touching their mouth, nose or eyes．
There are medicines to treat swine flu．Doctors suggest using anti - viral drugs．They keep the virus from reproducing inside the body．
And there are vaccines for it now, several everyday steps can also help prevent the spread of the virus: washing hands frequently; avoiding close contact with people who are sick; and avoiding touching surfaces that might have the virus on it．
People may worry that they will get swine flu from eating or preparing pork．In fact, you cannot catch the virus from pork products if they have been properly prepared and cooked．Cooking food at temperatures of 71℃ kills the virus．
69．What is the main idea of the passage?
A．It mainly tells us how swine flu broke out in Mexico City．
B．It presents the reader with some information concerning swine flu．
C．It tells us the differences between swine flu and bird flu．
D．It mainly tells readers the dangers caused by swine flu．
70．The following tips can protect us from swine flu EXCEPT _________．
A．keeping us away from other people
B．washing hands frequently
C．avoiding close contact with sick people
D．avoiding touching surfaces that might have the virus on them
71．What's the main idea of the first paragraph?
A．Mexico City is really a place of horror now．
B．People in Mexico City like staying at home．
C．People in Mexico City don't like soccer．
D．Swine flu has seriously affected people's life in Mexico City．
72．What can we infer from the passage?
A．At present there still aren't effective vaccines for swine flu．
B．Swine flu is preventable，controllable and curable．
C．From now on, people can't eat pork if they want to be safe．
D．All of the dead killed by swine flu had lung damage．
查看习题详情和答案>>A story from the Bible tells of old Babylon, where the men decided to build a tower that would touch the sky．But God was unhappy, and he made them speak different languages．They couldn’t understand each other, so their dream never came true．
Yet the dream remains alive: if all men speak the same language, they can do anything．L．L．Zamenhof from Poland was among the men who pursue this dream．He developed Esperanto（世界语）between 1877 and 1885．
As the most successful man-made world language, it is spoken by over two million people around the world．Last month, the World Esperanto Congress（大会）, dealing with language rights, ended in Sweden．The 2004 conference will be held in Beijing．Most Esperanto speakers are in Central and Eastern Europe and in East Asia, particularly Chinese mainland．
Esperanto has two advantages．First, it’s easy．Each letter has exactly one sound and there are just 16 basic grammar rules．The second advantage is that it belongs to no one country．But Esperanto has only reached a small number of people compared with natural languages widely used around the world-such as English or Chinese．While these languages are deeply connected with their nations and cultures, Esperanto doesn’t have this background．
Will Esperanto really become a global language? It remains a question．
The writer tells us a story at the beginning to ．
A．explain why men have been making the effort to create a language shared by all
B．explain why men now speak different languages
C．show the relationship between man and God
D．prove that language is very important
What does the underlined word “pursue” in the second paragraph mean?
A．“Realize”． B．“Work for”． C．“Be against”． D．“Follow”．
What is the basic difference between Esperanto and English?
A．More people speak English than Esperanto．
B．Esperanto words are easier to spell．
C．Esperanto has fewer grammar rules．
D．Esperanto is not supported by any country or culture．
What does the story mainly talk about?
A．Advantages and disadvantages of Esperanto．
B．Men’s dream of sharing the same language．
C．The most successful planned language-Esperanto．
D．Comparison of Esperanto and other languages like English and Chinese．
查看习题详情和答案>>A new study warns that about thirty percent of the world's people may not have enough water by the year 2025.
A private American organization called Population Action International did the new study. It says more than three-hundred-thirty-five-million people lack enough water now. The people live in twenty-eight countries. Most of the countries are in Africa or the Middle East.
P-A-I researcher Robert Engelman says by the year 2025, about three-thousand-million people may lack water. At least 18 more countries are expected to have severe water problems. The demand for water keeps increasing. Yet the amount of water on Earth stays the same.
Mr. Engelman says the population in countries that lack water is growing faster than in other parts of the world. He says population growth in these countries will continue to increase.
The report says lack of water in the future may result in several problems. It may increase health problems. Lack of water often means drinking waters are not safe. Mr. Engelman says there are problems all over the world because of diseases, such as cholera, which are carried in water. Lack of water may also result in more international conflict. Countries may have to compete for water in the future. Some countries now get sixty percent of their fresh water from other countries. This is true of Egypt, the Netherlands, Cambodia, Syria, Sudan, and Iraq. And the report says lack of water would affect the ability of developing to improve their economies. This is because new industries often need a large amount of water when they are beginning.
The Population Action International study gives several solutions to the water problem. One way, it says, is to find ways to use water for more than one purpose. Another way is to teach people to be careful not to waste water. A third way is to use less water of agriculture.
The report also says long-term solutions to the water problem must include controls on population growth. It says countries cannot provide clean water unless they slow population growth by limiting the number of children people have.
are expected to have severe water problems by the year 2025.
A. 18 countries B. No countries
C. 46 countries D. 28 countries
All the following are true except .
A. New industries need a lot of water
B. There are solutions to the water problem
C. Egypt now has enough fresh water
D. Lack of water may cause conflict between countries
It can be learned that .
A. The ability of developing has nothing to do with lack of water.
B. . It is not known whether diseases have something to do with lack of water
C. Lack of water may also result from international conflict
D There is connection between providing clean water and slowing population growth
The best title of the passage would be .
A. World Water Shortage B. Population and Water
C. World Conflict D. Diseases and Water
查看习题详情和答案>>A characteristic of American culture that has become almost a tradition is to respect the self-made man — the man who has risen to the top through his own efforts, usually beginning by working with his hands. While the leader in business or industry or the college professor occupies a higher social position and commands greater respect in the community than the common laborer or even the skilled factory worker, he may take pains to point out that his father started life in America as a farmer or laborer of some sort.
This attitude toward manual(体力的) labor is now still seen in many aspects of American life. One is invited to dinner at a home that is not only comfortably but even luxuriously (豪华地) furnished and in which there is every evidence of the fact that the family has been able to afford foreign travel, expensive hobbies, and college education for the children; yet the hostess probably will cook the dinner herself, will serve it herself and will wash dishes afterward, furthermore the dinner will not consist merely of something quickly and easily assembled from contents of various cans and a cake or a pie bought at the nearby bakery. On the contrary, the hostess usually takes pride in careful preparation of special dishes. A professional man may talk about washing the car, digging in his flowerbeds, painting the house. His wife may even help with these things, just as he often helps her with the dishwashing. The son who is away at college may wait on table and wash dishes for his living, or during the summer he may work with a construction gang on a highway in order to pay for his education.
1. From paragraph 1, we can know that in America _________.
A. people tend to have a high opinion of the self-made man
B. people can always rise to the top through their won efforts
C. college professors win great respect from common workers
C. people feel painful to mention their fathers as labors.
2. According to the passage, the hostess cooks dinner herself mainly because _________.
A. servants in American are hard to get
B. she takes pride in what she can do herself
C. she can hardly afford servants
D. It is easy to prepare a meal with canned food
3. The expression “ wait on table” in the second paragraph means “_________”.
A. work in a furniture shop B. keep accounts for a bar
C. wait to lay the table D. serve customers in a restaurant
4. Which of the following may serve as the best title of the passage?
A. A Respectable Self-made Family B. American Attitude toward Manual Labor
C. Characteristics of American Culture D. The Development of Manual Labor
查看习题详情和答案>>Not long ago, people thought babies were not able to learn things until they were five or six months old. Yet doctors in the United States say babies begin learning on their first day of life.
Scientists note that babies are strongly influenced by their environment. They say a baby will smile if her mother does something the baby likes. A baby learns to get the best care possible by smiling to please her mother or other caregivers. This is how babies learn to connect and communicate with other human beings.
One study shows that babies can learn before they are born. The researchers placed a tape recorder on the stomach of a pregnant woman. Then, they played a recording of a short story. On the day the baby was born, the researchers attempted to find if he knew the sounds of the story repeated while in his mother. They did this by placing a device in the mouth of the newborn baby.
The baby would hear the story if he moved his mouth one way. If the baby moved his mouth the other way, he would hear a different story. The researchers say the baby clearly liked the story he heard before he was born. They say the baby would move his mouth so he could hear the story again and again.
Another study shows how mothers can strongly influence social development and language skills in their children.
Researchers studied the children from the age of one month to three years. The researchers attempted to measure the sensitivity of the mothers. The women were considered sensitive if they supported their children’s activities and did not interfere (干涉) unnecessarily. They tested the children for thinking and language development when they were three years old. Also, the researchers observed the women for signs of depression (消沉).
The children of depressed women did not do as well in tests as the children of women who did not suffer from depression. The children of depressed women did poorly in tests of language skills and understanding what they hear.
These children also were less cooperative and had more problems dealing with other people. The researchers noted that the sensitivity of the mothers was important to the intelligence development of their children. Children did better when their mothers were caring, even when they suffered from depression.
According to the passage, which of the following is NOT the factor that influences intelligence development in babies?
A. The environment. B. Mother’s sensitivity.
C. Education before birth. D. Their peers (同龄人)
What is the purpose of the experiment in which newborn babies heard the stories?
A. To prove that babies can learn on the first day they are born.
B. To prove that babies can learn before they are born.
C. To show mothers can strongly influence intelligence development in their babies.
D. To indicate early education has a deep effect on the babies’ language skills.
Which group of children did the worst in tests of language skills?
A. The children of women who did not suffer from depression.
B. The children of depressed but caring mothers.
C. The children of depressed mothers who cared little for their children.
D. The children with high communication abilities.
What is the main idea of the passage?
A. Scientific findings about how intelligence develops in babies.
B. Scientific findings about how the environment has an effect on babies’ intelligence.
C. A study shows babies are not able to learn things until they are five or six months old.
D. Scientific findings about how babies develop before birth.
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