阅读理解。 Since the 1970s, scientists have been searching for ways to link the b
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| 阅读理解。 |
Since the 1970s, scientists have been searching for ways to link the brain with computers. Brain-computer
interface (BCI) technology could help people with disabilities send commands to machines.
Recently, two researchers, Jose Milan and Michele Tavella from the Federal Polytechnic school in Lausanne,
Switzerland, demonstrated (展示) a small robotic wheelchair directed by a person"s thoughts.
In the laboratory, Tavella operated the wheelchair just by thinking about moving his left or right band. He
could even talk as he watched the vehicle and guided it with his thoughts.
"Our brain has billions of nerve cells. These send signals through the spinal cord (脊髓) to the muscles to
give us the ability to move. But spinal cord injuries or other conditions can prevent these weak electrical signals
from reaching the muscles," Tavella says. "Our system allows disabled people to communicate with external
world and also to control devices."
The researchers designed a special cap for the user. This head cover picks up the signals from the scalp (头
皮) and sends them to a computer. The computer interprets the signals and commands the motorized
wheelchair. The wheelchair also has two cameras that identify objects in its path. They help the computer react
to commands from the brain.
Prof. Milan, the team leader, says scientists keep improving the computer software that interprets brain
signals and turns them into simple commands. "The practical possibilities that BCI technology offers to disabled
people can be grouped in two categories: communication, and controlling devices. One example is this
wheelchair."
He says his team has set two goals. One is testing with real patients, so as to prove that this is a technology
they can benefit from. And the other is to guarantee that they can use the technology over long periods of time. |
| 1. BCI is a technology that can _____. |
A. help to update computer systems
B. link the human brain with computers
C. help the disabled to recover
D. control a person"s thoughts |
| 2. How did Tavella operate the wheelchair in the laboratory? |
A. By controlling his muscles.
B. By talking to the machine.
C. By moving his hand.
D. By using his mind. |
| 3. Which of the following shows the path of the signals described in Paragraph 5? |
A. scalp→computer→cap→wheelchair
B. computer→cap→scalp→wheelchair
C. scalp→cap→computer→wheelchair
D. cap→computer→scalp→wheelchair |
| 4. The team will test with real patients to _____. |
A. make profits from them
B. prove the technology useful to them
C. make them live longer
D. learn about their physical condition |
| 5. Which of the following would be the best title for the text? |
A. Switzerland, the BCI Research Center
B. New Findings About How the Human Brain Works
C. BCI Could Mean More Freedom for the Disabled
D. Robotic Vehicles Could Help to Cure Brain Injuries |
答案
| 1-5: BDCBC |
举一反三
| 阅读理解。 |
GUATEMALA CITY(Reuters)-A fish that lives in mangrove swamps (红树沼泽) across the Americas
can live out of water for months at a time, similar to how animals adapted (适应) to land millions of years
ago, a new study shows.
The Mangrove Rivulus, a type of small killifish, lives in small pools of water in a certain type of empty
nut or even old beer cans in the mangrove swamps of Belize, the United States and Brazil. When their living
place dries up, they live on the land in logs (圆木), said Scott Taylor, a researcher at the Brevard Endangered
Lands Program in Florida.
The fish, whose scientific name is Rivulus marmoratus, can grow as large as three inches. They group
together in logs and breathe air through their skin until they can find water again.
The new scientific discovery came after a trip to Belize.
"We kicked over a log and the fish just came crowding out," Taylor told Reuters in neighboring Guatemala
by telephone. He said he will make his study on the fish known to the public in an American magazine early
next year.
In lab tests, Taylor said he found the fish can live up to 66 days out of water without eating.
Some other fish can live out of water for a short period of time. The walking catfish found in Southeast
Asia can stay on land for hours at a time, while lungfish found in Australia, Africa and South America can
live out of water, but only in an inactive state. But no other known fish can be out of water as long as the
Mangrove Rivulus and remain active, according to Patricia Wright, a biologist at Canada"s University of
Guelph.
Further studies of the fish may tell how animals changed over time.
"These animals live in conditions similar to those that existed millions of years ago, when animals began
making the transition (过渡) form water onto land," Wright said. |
| 1. The Mangrove Rivulus is a type of fish that ______. |
A. likes eating nuts
B. prefers living in dry places
C. is the longest living fish on earth
D. can stay alive for two months out of water |
| 2. Who will write up a report on mangrove Rivulus? |
A. Patricia Wright.
B. Researchers in Guatemala.
C. Scientists from Belize.
D. Scott Taylor. |
| 3. According to the text, lungfish can ______. |
A. breathe through its skin
B. move freely on dry land
C. remain alive out of water
D. be as active on land as in water |
| 4. What can we say about the discovery of Mangrove Rivulus? |
A. It was made quite by accident.
B. It was based on a lab test of sea life.
C. It was supported by an American magazine.
D. It was helped by Patricia Wright. |
| 阅读理解。 |
Thousands of people living in the Chinese capital will celebrate the start of the Chinese New Year by
heading for the ski resorts (滑雪场). Never mind that Beijing"s dry weather seldom produces. Now it is
cold enough in winter for snow-making machines to make a covering for the hills north to the capital.
And the rapid growth of a pleasure-seeking middle class has formed the basis for this new craze (热潮).
Since Beijing"s first ski resort was opened ten years ago, the sport has enjoyed an astonishing increase.
There are now more than a dozen resorts. Clothes markets in the city have added bright colored ski suits
to their winter collections. Mr. Wei, a manager of a newly-opened ski resort in Beijing, sees the growth
of an industry that could soon lead Chinese to head for the ski resorts of Europe. In recent years ski resorts
offering natural snow have opened in China. But many are in faraway areas of the country and can"t really
match the equipment and services of some ski resorts in Europe.
Beijing"s skiing craze is partly a result of the recent increase in private (私有的) cars. This has led to
the growth of a leisure industry in the capital"s suburbs (郊区), which until the late-1990s were unreachable
to ordinary people. According to Mr. Wei, about 40％ of the visitors go to his resort. Some in their own
cars, the rest are bused in by schools, businesses or government offices.
The problem is making money. Starting ski resort requires quite a lot of money: hiring land from the local
government, preparing the hills, buying snow machines, making sure there are enough water and electricity
to run them, and buying ski equipment for hiring out to customers. The ski resort where Mr. Wei works
cost nearly $4m to set up. And, as so often in China when someone comes up with a good idea, many others
rush in and price wars break out. Beijing now offers some of the cheapest ski training classes in the world,
though with most people rather new to the sport, expecting a few more doing the same job. |
| 1. What does this text mainly talk about? |
A. Convenience for skiers brought about by private cars
B. Skiing as a new way of enjoying one"s spare time
C. Things to be considered when starting a ski resort
D. A sudden increase of ski training classes in Beijing |
| 2. Why are some Chinese likely to go skiing in Europe? |
A. To visit more ski areas
B. To ski on natural snow
C. For a large collection of ski suits
D. For better services and equipment |
| 3. The underlined words "leisure industry" in Paragraph 3 refer to _____. |
A. transport to ski resorts
B. production of family cars
C. business of providing spare time enjoyments
D. part-time work for people living in the suburbs |
| 4. What is the main problem in running a ski resort? |
A. Difficulty in hiring land
B. Lack of business experience
C. ski resorts.
D. Shortage of water and electricity |
| 阅读理解。 |
VINCOUVER (Reuters)-South Korea"s Kim Yuna can finally relax and doesn"t need to think about the future
after she won the gold medal in the women"s figure skating (花样滑冰) on Thursday.
The 19-year-old was the overwhelming (压倒性的) favorite to finish top of the podium (颁奖台) but said
the pressure going into the event was large.
"I feel now as if a huge burden has been lifted," the Games" highest-earning female athlete-she makes an
estimated $8 million a year-said after her near-perfect program where she nailed all of her 11 jumps.
"I will enjoy this moment and think about things later. I was just thrilled on the podium and I feel so relieved.
I had been running toward this dream of the Olympics and was so happy to be here," she said.
"Since I have achieved the most important goal in my life, I am going to enjoy this moment for a while and
then think about what I am going to do," a smiling Yuna said.
Japanese rival Mao Asada took silver while Joannic Rochette of Canada grabbed the bronze medal four days
after her mother died.
"I still cannot believe I did what I wanted to do at the Olympics. I have been dreaming about this moment
and I cannot believe it is not a dream anymore." said Yuna.
South Korea was counting on her to grab their first gold medal in figure skating and the first Winter
Olympics gold medal outside short track and speed skating.
"I was just happy to have skated a clean program. It was the first time I skated two clean programs. During
the program when I finished all elements I thought this is going to be yeah...this is it." |
| 1. Kim Yuna felt relaxed because _____. |
A. the competition was over
B. her dream finally came true
C. she won a large amount of money
D. she became well-known overnight |
| 2. According to the passage, Kim Yuna _____. |
A. had a strong sense of team spirit in the Games
B.won the first gold medal for South Korea in the Winter Olympics
C. had expected she would surely win the gold medal
D. joined in the competition with great pressure from her country |
| 3. The underlined word "rival" in Paragraph 6 most probably means "_____". |
A. competitor
B. coach
C. judge
D. hostess |
| 4. It is known from the passage that _____. |
A. Kim Yuna is a person of great confidence
B. Joannic Rochette joined in the games with great sorrow
C. Kim Yuna is the richest athlete in South Korea
D. Mao Asada took silver medal by accident |
| 阅读理解。 |
WASHINGTON-Thanks to strong economic growth and a growing middle class, China has surpassed
India for the first time this decade to become the country that sends the most students to the United States,
according to the annual report the Institute of International Education (IIE) released (发布) on Monday.
The number of Chinese students in the US has increased by 30 percent during the 2009-2010 academic
year to about 128,000, or 18.3 percent of the total international student population in the country, the report
said.
"The Chinese economy is booming. The growing middle class are able to send their children abroad for
higher education as many families have only one child and they use all their resources on that child." said
Peggy Blumenthal, executive vice-president of IIE.
Another reason is that many Chinese parents are attracted by the US higher education system. "American
undergraduate education is really appealing Chinese parents who are thinking about what is needed for China
in the future and how their son or daughter can be employable," Blumenthal said.
Chinese overseas study agencies expect more Chinese students to go to the US next year, partly due to
the weakened US dollar and more flexible visa policies.
The study and living costs for an undergraduate Chinese student in the US every year are roughly about
250,000 yuan ($37,000), and the depreciation of the US dollar may save about 10 percent of the cost, said
Liu Qingsheng, a senior manager with Shinyway International, a Beijing-based overseas study consulting
company.
A more flexible visa policy, which the US started to adopt in 2008, is another major attraction, he said. |
| 1. According to the passage, we know during the 2009-2010 academic year, _____. |
A. the number of India students in the US has increased
B. as many as 128,000 international students study in the US
C. the number of the Chinese students in the US make first
D. more than 18.3 percent of Chinese students study abroad |
| 2. More Chinese students go to US universities because of the following reasons except _____. |
A. a more flexible visa policy
B. the US higher education system
C. a proving middle class in China
D. strong economic growth in the US |
| 3. Which of the following can best replace deprecation in the passage? |
A. rise in quantity
B. decrease in quality
C. fall in value
D. increase in weight |
| 阅读理解。 |
Wednesday, October 29, 2008
The United States federal government had two young men in the state of Tennessee arrested on October
22 on unknown charges.
In court documents published on Monday, it came to light that the men had discussed attacking an African-
American school and killing 14 of them.
Another crime was about planning to murder Presidential candidate Barack Obama. According to their
affidavits (口供), the suspects" "final act of violence" would be when they attacked Obama while wearing
white suits and top hats and driving"their vehicle as fast as they could toward Obama shooting at him from
the windows."
The two suspects are Paul Schlesselman, 18, of West Helena, http://wx.jtyjy.com/ Arkansas and Daniel
Cowart, 20, of Bells, Tennessee. According to the court papers, they met last month over the Internet through
a friend. Schlesselman and Cowart are believed to share "very strong views" about White Power.
Schlesselman listed "being racist" as his occupation on his MySpace page. He further wrote:"I"m white.
I"m proud. I get angry. I like guns."
Cowart also had a MySpace page on which photos of guns were presented under a heading of "My Guns".
On his page he wrote, "Better to die quick fighting on your feet than to live forever begging on your knees."
Some have questioned the pair"s ability to carry out the charged plan, but authorities have been very
concerned about Obama as the first black presidential candidate from a major party.
"We honestly don"t know if they had the ability or the skill to carry out the kind of plan that they talked
about," said Malcolm Wiley, of the United States Secret Service in an interview with The New York Times.
"But we take any threat seriously no matter how big or how small it is."
Cowart and Schlesselman are scheduled to appear before a judge on Thursday. |
| 1. The passage is mainly about _____. |
A. Americans" attitudes towards Barack Obama
B. two young men planning to commit violence
C. the violence in the United States
D. the disadvantages of the Internet |
| 2. From the passage, we can know that the two young men _____. |
A. shot 14 students in an African-American school
B. came from the state of Tennessee
C. were proud of Barack Obama
D. have not been sentenced yet |
3. Which of the following shows the right order of the events?
a. The two suspects were arrested.
b. The two suspects will be tried in the court.
c. Cowart set up his MySpace page on the Internet.
d. Malcolm Wiley was interviewed by The New York Times. |
A. a; b; c; d
B. d; c; b; a
C. c; a; d; b
D. c; a; b; d |
| 4. What can we infer from the news? |
A. The two young men strongly believed that the president should be a white man.
B. Most of the white people in the United States don"t like Barack Obama.
C. The two young men planned to shoot President Barack Obama.
D. The two young men were innocent in fact. |
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