Most respected scientists agree that we need to find another source of energy- and quickly. If we continue to burn oil and pump carbon into the atmosphere, then the effects on global climate will lead to global disasters even before the oil disappear.
The British government has set a target of a 20 percent reduction in carbon emission by 2010. Central to this policy is the search for alternative, renewable forms of energy production---and this is where the serious disagreement among scientists begins.
Here, two people active in the debate about wind farms give their points of view.
Simon Shearman
“First, a few facts about wind power. Wind is one of the cheapest of the new, renewable forms of energy. It is extremely safe---no member of the public has ever been injured at a wind farm. The shallow waters around Britain are the windiest in Europe---ideal locations for wind farms and, by 2010, up to ten percent of the electricity used in the UK could be produced by wind power. I find it annoying and frustrating that the biggest objection that opponents of wind farms can come up with is that the crisis of global warming is real and something must be done urgently.”
Alice Evans
“The simple, obvious fact is that wind turbines（涡轮机） cannot generate electricity if the wind is too light or too strong and it often is. Many scientists estimate that wind turbines generally produce only 30 percent of their capacity（容量）. This is not a reliable enough supply to enable us to close down conventional power stations. In fact, wind power can’t keep up with the growth of the demand for electricity, let alone replace other sources of power.”
It’s a topic that is causing heated debate around the country---but one we must address before it’s too late---before the oil runs out.Many scientists have different opinions on the search for a renewable energy because ______.
| A．they think fossil fuels are everlasting. |
| B．British government’s target is not realistic. |
| C．they are not sure in finding the clean and renewable energy. |
| D．the technology is not advanced enough. |
We can learn from the passage that ______.
| A．there won’t be a global disaster before the world runs out of oil. |
| B．the British government wants people to use 20 percent less oil by 2010. |
| C．Alice Evans supports the idea of wind power. |
| D．Simon Shearman thinks Britain a particularly suitable place for wind farms. |
If we generate electricity with wind turbines, _______.
| A．a light wind will do. |
| B．we cannot make full use of the capacity. |
| C．a strong wind will do |
| D．we’ll have enough electricity. |
What can we learn from the last paragraph?
| A．Wind power is a good solution to energy crisis. |
| B．We’re experiencing the oil crisis now. |
| C．We should find alternative energy for oil as soon as possible. |
| D．There is no need for us to worry about energy problem. |
A German study suggests that people who were too optimistic about their future actually faced greater risk of disability or death within 10 years than those pessimists who expected their future to be worse.
The paper, published this March in Psychology and Aging, examined health and welfare surveys from roughly 40,000 Germans between ages 18 and 96. The surveys were conducted every year from 1993 to 2003.
Survey respondents (受访者) were asked to estimate their present and future life satisfaction on a scale of 0 to 10, among other questions.
The researchers found that young adults (age 18 to 39) routinely overestimated their future life satisfaction, while middle-aged adults (age 40 to 64) more accurately predicted how they would feel in the future. Adults of 65 and older, however, were far more likely to underestimate their future life satisfaction. Not only did they feel more satisfied than they thought they would, the older pessimists seemed to suffer a lower ratio (比率) of disability and death for the study period.
“We observed that being too optimistic in predicting a better future than actually observed was associated with a greater risk of disability and a greater risk of death within the following decade,” wrote Frieder R. Lang, a professor at the University of Erlangen-Nuremberg.
Lang and his colleagues believed that people who were pessimistic about their future may be more careful about their actions than people who expected a rosy future.
“Seeing a dark future may encourage positive evaluations of the actual self and may contribute to taking improved precautions (预防措施),” the authors wrote.
Surprisingly, compared with those in poor health or who had low incomes, respondents who enjoyed good health or income were associated with expecting a greater decline. Also, the researchers said that higher income was related to a greater risk of disability.
The authors of the study noted that there were limitations to their conclusions. Illness, medical treatment and personal loss could also have driven health outcomes.
However, the researchers said a pattern was clear. “We found that from early to late adulthood, individuals adapt their expectations of future life satisfaction from optimistic, to accurate, to pessimistic,” the authors concluded.According to the study, who made the most accurate prediction of their future life satisfaction?
| A．Optimistic adults. | B．Middle-aged adults. |
| C．Adults in poor health. | D．Adults of lower income. |
Pessimism may be positive in some way because it causes people ______.
| A．to fully enjoy their present life |
| B．to estimate their contribution accurately |
| C．to take measures against potential risks |
| D．to value health more highly than wealth |
How do people of higher income see their future?
| A．They will earn less money. |
| B．They will become pessimistic. |
| C．They will suffer mental illness. |
| D．They will have less time to enjoy life. |
What is the clear conclusion of the study?
| A．Pessimism guarantees chances of survival. |
| B．Good financial condition leads to good health. |
| C．Medical treatment determines health outcomes. |
| D．Expectations of future life satisfaction decline with age. |
The Pacific island nation of Nauru used to be a beautiful place. Now it is an ecological disaster area. Nauru's heartbreaking story could have one good consequence—other countries might learn from its mistakes.
For thousands of years, Polynesian people lived on the remote island of Nauru, far from western civilization. The first European to arrive was John Fearn in 1798. He was the British captain of the Hunter, a whaling ship. He called the island Pleasant Island.
However, because it was very remote, Nauru had little communication with Europeans at first. Then whaling ships and other traders began to visit, bringing guns and alcohol. These elements destroyed the social balance of the twelve family groups on the island. A tenyear civil war started, which reduced the population from 1,400 to 900.
Nauru's real troubles began in 1899 when a British mining company discovered phosphate(磷酸盐) on the island. In fact, it found that the island of Nauru was nearly all phosphate, which is a very important fertilizer for farming. The company began mining the phosphate.
A phosphate mine is not a hole in the ground; it is a stripmine. When a company stripmines, it removes the top layer of soil. Then it takes away the material it wants. Stripmining totally destroys the land. Gradually, the lovely island of Nauru started to look like the moon.
In 1968, Nauru became one of the richest countries in the world. Every year the government received millions and millions of dollars for its phosphate.
Unfortunately, the leaders invested the money unwisely and lost millions of dollars. In addition, they used millions more dollars for personal expenses. Soon people realized that they had a terrible problem—their phosphate was running out. Ninety percent of their island was destroyed and they had nothing. By 2000, Nauru was almost financially ruined. Experts say that it would take approximately $433,600,000 and more than 20 years to repair the island. This will probably never happen.What might be the author's purpose in writing the text?
| A．To seek help for Nauru's problems. |
| B．To give a warning to other countries. |
| C．To show the importance of money. |
| D．To tell a heartbreaking story of a war. |
What was Nauru like before the Europeans came?
| A．Rich and powerful. |
| B．Modern and open. |
| C．Peaceful and attractive. |
| D．Greedy and aggressive. |
The ecological disaster in Nauru resulted from ________.
| A．soil pollution |
| B．phosphate overmining |
| C．farming activity |
| D．whale hunting |
Which of the following was a cause of Nauru's financial problem?
| A．Its leaders misused the money. |
| B．It spent too much repairing the island. |
| C．Its phosphate mining cost much money. |
| D．It lost millions of dollars in the civil war. |
What can we learn about Nauru from the last paragraph?
| A．The ecological damage is difficult to repair. |
| B．The leaders will take the experts' words seriously. |
| C．The island was abandoned by the Nauruans. |
| D．The phosphate mines were destroyed. |
Something in chocolate could be used to stop coughs and lead to more effective medicines, say UK researchers.
Their study found that theobromine, found in cocoa, was nearly a third more effective in stopping coughs than codeine, which was considered the best cough medicine at present.
The Imperial College London researchers who published their results online said the discovery could lead to more effective cough treatment. “While coughing is not necessarily harmful(有害的) it can have a major effect on the quality of life, and this discovery could be a huge step forward in treating this problem,” said Professor Peter Barnes.
Ten healthy volunteers(志愿者) were given theobromine, codeine or placebo, a pill that contains no medicine, during the experiment. Neither the volunteers nor the researchers knew who received which pill. The researchers then measured levels of capsaicin, which is used in research to cause coughing and as a sign of how well the medicine are stopping coughs.
The team found that, when the volunteers were given theobromine, the capsaicin need to produce a cough was around a third higher than in the placebo group. When they were given codeine they need only slightly higher levers of capsaicin to cause a cough compared with the placebo.
The researchers said that theobromine worked by keeping down a verve activity(神经活动), which cause coughing. They also found that unlike some standard cough treatments, theobromine caused no side effects such as sleepiness.According to Professor Barnes, theobromine ______.
| A．cannot be as effective as codeine |
| B．can be harmful to people’s health |
| C．cannot be separated from chocolate |
| D．can be a more effective cure for coughs |
What was used in the experiment to cause coughing?
| A．Theobromine. | B．Codeine. | C．Capsaicin. | D．Placebo. |
We learn from the text that volunteers in the experiment _____.
| A．were patients with bad coughs |
| B．were divided into the three groups |
| C．received standard treatments |
| D．suffered little side effects |
Which of the following would be the best title for the text?
| A．Codeine: A New Medicine | B．Chocolate May Cure Coughs |
| C．Cough Treatment: A Hard Case | D．Theobromine Can Cause Coughs |
Make Up Your Mind to Succeed
Kindhearted parents have unknowingly left their children defenseless against failure. The generation born between 1980 and 2001 grew up playing sports where scores and performance were played down because “everyone's a winner.” And their report cards sounded more positive (正面的) than ever before. As a result, Stanford University professor Carol Dweck, PhD, calls them “the overpraised generation.”
Dweck has been studying how people deal with failure for 40 years. Her research has led her to find out two clearly different mindsets that have a great effect on how we react to it. Here's how they work：
A fixed mindset is grounded in the belief that talent (才能) is genetic—you're a born artist, point guard, or numbers person. The fixed mindset believes it's sure to succeed without much effort and regards failure as personal shame. When things get difficult, it's quick to blame, lie, and even stay away from future difficulties.
On the other hand, a growth mindset believes that no talent is entirely heavensent and that effort and learning make everything possible. Because the ego(自尊) isn't on the line as much, the growth mindset sees failure as a chance rather than shame. When faced with a difficulty, it's quick to rethink, change and try again. In fact, it enjoys this experience.
We are all born with growth mindsets. (Otherwise, we wouldn't be able to live in the world.) But parents, teachers, and instructors often push us into fixed mindsets by encouraging certain actions and misdirecting praise. Dweck's book, Mindset: The New Psychology of Success, and online instructional program explain this in depth. But she says there are many little things you can start doing today to make sure that your children, grandchildren and even you are never defeated by failure.What does the author think about the present generation?
| A．They don't do well at school. |
| B．They are often misunderstood. |
| C．They are eager to win in sports. |
| D．They are given too much praise. |
A fixed mindset person is probably one who ________.
| A．doesn't want to work hard |
| B．cares a lot about personal safety |
| C．cannot share his ideas with others |
| D．can succeed with the help of teachers |
What does the growth mindset believe?
| A．Admitting failure is shameful. |
| B．Talent comes with one's birth. |
| C．Scores should be highly valued. |
| D．Getting over difficulties is enjoyable. |
What should parents do for their children based on Dweck's study?
| A．Encourage them to learn from failures. |
| B．Prevent them from making mistakes. |
| C．Guide them in doing little things. |
| D．Help them grow with praise. |
Moscow, Russia (Space news)... "The,computer is a better chess player, " insisted Viktor Prozorov, the loser. "It seemed as if it were laughing after every good move, I know I should have beaten it for the sake of mankind(为人类着想), but I just couldn't win," he announced and shook his head sadly.
Prozorov's disappointment was shared by sereral grand masters who were present, some of whom were so upet that they shouted at the machine. Many chess players said that this meant the end of chess championships(锦标赛) around the world, since the fun had been taken out of the game.
The computer walked or rather, rolled-away with 5,000 dollars in prize money and limited its remarks to a set of noises and lights.Which of the following best gives the main idea of this newspaper article?
| A．5,000 dollars goes to a computer! | B．New invention:a laughing computer! |
| C．World's best chess player beaten! | D．Computer defeats man in chess! |
How did some of the grand masters feel about chess game between Prozorov and the computer?
A. They thought that the game was no fun.
B. They thought that the game was no fun.
C. They agreed that Prozorov didn't play well
D They were unhappy that the computer had won.What was it that Prozorov felt most bitter(懊恼) about?
| A．That he didn't win the $5,000. | B．That he hadn't tried his best. |
| C．That he had lost to a machine. | D．That this was the end of the chess game. |
After winning the game, the computer______.
| A．laughed | B．walked away |
| C．made some remarks | D．gave out some lights and sounds |
Many chess players felt that playing with a computer would______.
| A．make the game tougher | B．make the game less interesting |
| C．make man appear foolish | D．make man lose lots of money |