You are sitting on the desk. A teacher is writing on the blackboard. Kids are yelling in the playground outside. A book falls off the desk next to you. Suddenly, the teacher hands you a pop quiz.
Don’t panic! 1. You’re in a “virtual（虚拟的）classroom”. Everything you see and hear is coming to you through a computer-operated display that you’re wearing on your head like a pair of very big glasses. Wearing this kind of virtual-reality equipment, you can find yourself sitting in a classroom, touring a famous museum, wandering across a strange landscape, flying into space, or playing with a cartoon character. 2. Virtual-reality equipment that delivers images and sounds directly to your eyes and ears makes these fake worlds seem lifelike.
Unlike the classroom, the technology is real. It’s a type of technology that uses computer programs to imitate real world situation. 3. Movie directors and video game producers have been using computers for years to create ever more realistic special effects. Some companies are now building three-dimensional（三维）fantasy worlds in which players, linked by computer networks, appear to meet and go on explorations together.
4. They see virtual reality technology as a useful tool for learning more about why people act as they do. It could help psychologists deter identify and come up with solutions for behaviors problems, for example.
“We’ve spent the last 100 years looking for certain laws in how people interact with the real world,” says psychologist Albert. “5. This is psychologist’s dream.”
A. You aren’t actually in school.
B. This technology has been used in many fields.
C. Some psychologists are also getting into the act.
D. Grown-ups, too, stand a chance of benefiting from this technology.
E. As part of one classic test, you watch letters flashed on a computer screen.
F. You don’t have to leave your room to experience all that mentioned above.
G. Now, we’ve got a powerful tool that lets us create worlds and see how people perform.
Visitors to Britain are sometimes surprised to learn that newspapers there have such a large circulation (发行). The “Daily Mirror “ and the “Daily express” both sell about four million copies everyday. British families generally buy a newspaper every morning and two or three on Sundays.
Besides the national papers, there is, however, another branch of the British press which sells almost as many copies. Local newspapers have a weekly circulation of 13 million. Almost every town and county area has one. Nearly all of them hold their own financially (财政) and many of them are very profitable (赚钱的).
These papers are written almost entirely for readers interested in local events—births, weddings, deaths, council (地方会议) meetings and sports. Editors prefer to rely on people who know the district well. A great deal of local news is regularly supplied by clubs and churches in the neighborhood and it does not get out to date as quickly as national news.
The editors must never forget that the success of any newspaper depends on advertising (广告). He is usually anxious to keep the good will of local businessmen for this reason. But if the newspaper is well written and the news items have been carefully chosen to draw local readers, the business men are grateful for the opportunity (机会) to keep their products in the public eyes.
1.Visitors to Britain are surprised to learn that ________.
A. there are so many local newspapers there
B. local papers should have a circulation of four million
C. the “Daily Mirror “ and “Daily Express” sell as many as 4 million copies every day
D. British newspapers are so widely read
2.Local newspapers have ________.
A. a circulation as large as that of national newspapers
B. a daily circulation of 13 million
C. a slightly smaller circulation
D. an even larger circulation
3.In the writer’s opinion, no paper can possibly succeed without ________.
A. advertisements B. interesting reports
C. a great deal of national news D. an excellent sales manager
4.Which of the following is true?
A. All the local newspapers are very profitable.
B. Local newspapers have a weekly circulation of 14 million.
C. Local readers are much interested in local news.
D. Each British family buys three newspapers on Sundays.
Thousands of persons in Peru are suffering from the disease cholera. Medical experts say it is the first time in their century that cholera has reached the western part of the world. The United States Centers for disease control says the kind of cholera has been spreading throughout the world since 1961. It was discovered that year in Indonesia. Since the first case in Peru, more than sixteen thousand people have been affected and about one hundred have died.
Cholera is caused by polluted food and water. People become infected (传染) when they eat the polluted food or drink the polluted water. If untreated immediately, they may die within hours. Most victims however, can be saved. Treatment includes drugs and replacement of body fluids (液体) directly into the blood.
Medical researchers have developed a vaccine (菌苗) medicines to protect against cholera. But the vaccine is only about 50% effective. And it protects against cholera for only about six months. Medical experts say the best way to fight cholera is to prevent it. They also say people should not eat uncooked food or food that has not been cooked long enough. People who live in areas where cholera has been found should wash their hands before eating and cooking. They should drink only water that has been boiled or made pure with chemicals.
1.The underlined word “Cholera” in the first paragraph means ________.
A. a certain place in Peru
B. a kind of illness which may make people die
C. a certain place in Indonesia
D. a certain medicine to deal with diseases
2.Cholera results from (由于……结果) ________.
A. Peru and Indonesia
B. the different peoples in the world
C. the different areas in the world
D. polluted water and polluted food
3.How to treat the people who have been caught by cholera?
A. By medicines and blood improvement.
B. By eating unpolluted food.
C. By drinking unpolluted water.
D. By taking them to a separated place.
4.The most effective way of avoiding cholera is ________.
A. seeing doctors as soon as possible
B. fighting against it
C. paying attention to the eating and drinking
D. taking vaccine immediately
Discovery’s astronauts arrived to an exciting celebration Wednesday as nearly 700 people crowded an airplane storage place, waving flags and holding signs that read: “Welcome Home, Astronauts!”
The seven-person team returned to Earth on Tuesday after being the first to take a space shuttle into orbit since the Columbia disaster(灾难) of 2003.
“In the last two and a half years, we have been through the very worst that manned space flight can bring us, and over the past two weeks we have seen the very best,” NASA Administrator Michael Griffin told the astronauts and their families and fans Wednesday.
The crowd waved American flags for the U.S. astronauts and Japanese flags for crew member Soichi Noguchi, one of the spacewalkers.
“As a rookie（新手）astronaut, I could not ask for more,” Noguchi said, “We had three spacewalks, two extra days in space and one great team.”
While the homecoming has been filled with excitement for what mission controllers declared a “truly spectacular test flight”, uncertainty remains for the future of the shuttle program.
Shortly after Discovery rose up into space July 26, a nearly 1-pound large piece of foam insulation（泡沫绝缘材料） fell from the fuel tank—the very thing that was supposed to have been fixed after Columbia exploded. The foam missed Discovery, but NASA grounded all shuttle flights until engineers fix the problem.
NASA ground crews examined Discovery after its return from orbit and found it in good condition, an official said Wednesday at NASA’s Dryden Flight Research Center at Edwards Air Force Base in California.
Technicians counted 101 dings and divots, including 20 that were larger than 1 inch. Schaaf Dean, landing support group chief, said the numbers were similar to the results of other shuttle, post-landing examinations.
A beginning examination of the shuttle’s thermal（热的）blanket showed it remained undamaged during re-en-try into the Earth’s air.(Agencies)
1.The seven astronauts ________.
A. are the first to take a space shuttle into orbit
B. took the Columbia into space
C. returned to earth safely
D. are Americans
2.According to the text, the NASA officials think ________.
A. the flight of Discovery is a failure
B. manned space flight has been through the best in the past
C. the flight of Discovery is a success
D. the astronauts are national heroes
3.When the Discovery took off, ________.
A. the fuel tank burned B. a piece of foam insulation fell
C. the safety belt is not fixed D. it knocked into the Columbia
4.The underlined word “grounded” means ________.
A. (of a boat) hit the bottom of a sea and be unable to move
B. to cause a boat to hit the bottom of a sea or lake
C. to prevent a plane or person from flying
D. to be based on something
The weather is getting hotter and you’ll be getting thirstier playing basketball or riding home from school. A cold drink may be just the thing. But be careful what you pour down your throat. Something that looks cool may not be good for your health.
There are plenty of so-called energy drinks on the market. Most of them have an attractive colour and cool name. Their nutrition list also contains various things from vitamins to ginseng. Sounds great!
But after a careful check you may find that most energy drinks contain high levels of caffeine. These drinks are typically aimed at young people, students, busy people and sports players.
Makers sometimes say their drinks make you better at sports and can keep you awake. But be careful not to drink too much.
Caffeine raises your heartbeat. Because of this, the International Olympic Committee has limited their use. The amount of caffeine in most energy drinks is at least as high as in a strong cup of coffee or strong tea.
Research by Australian scientists has found that many teenagers are affected by caffeine. The results of their survey show that 27 percent of boys aged 8-12 take in more caffeine than their parents.
There are potential health risks linked to energy drinks. Just one can of energy drink can make you nervous, have difficulty sleeping and can even cause heart attacks.
Teenagers should be discouraged from consuming drinks with a lot of caffeine in them, an expert from the Australia Nutrition Foundation said.
1.Generally, people would like to ________.
A. take vitamins B. eat ginseng C. have a cold drink D. have a meal
2.The International Olympic Committee limit the use of caffeine because ________.
A. it makes you better at sports B. it can keep you awake
C. it can make you nervous D. it make your heart beat fast
3.The writer mentions the fact that “27 percent of boys aged 8-12 take in more caffeine than their parents” to show that ________.
A. caffeine has an effect on many teenagers
B. parents should take in more caffeine
C. the caffeine problem is not serious
D. the grownups take less caffeine than children
Tchaikovsky, a famous Russian composer of the late-Romantic period, was born on 7 May 1840 in the mountains of western Russia. He was the first Russian composer whose music made a lasting impression internationally. Tchaikovsky’s training set him on a path to combine what he had learned with the native musical practices to which he had been exposed from childhood. He first helped write a song in 1844, at an age when most children are still in kindergarten. At home, his mother sang folk songs, which helped develop his interest in music. Mozart was Tchaikovsky’s favourite composer and he influenced Tchaikovsky’s life and work. For 11 years, beginning in 1866, Tchaikovsky taught at the Moscow School of Music. During his time there, he wrote music for the piano, along with ballets, operas and symphonies. He was famous for writing the music for the ballet Swan Lake in 1876. Because of his musical talent, Tchaikovsky toured many countries as a conductor, including a voyage to the USA in 1891. He continued to write for the ballet until his death in Saint Petersburg in 1893.
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