A victim of climate change
A polar bear's dead body found on the Arctic island of Svalbard, the northernmost part of Norway, has shocked experts who say climate change may be to blame for the animal’s death.The starved polar bear in Norway was said to be in good health in April when the Norwegian Polar Institute examined and labeled it． However, the animal was reduced to skin and bones by the time a group of explorers came across its body in July．
The bear is thought to have been heading north in a desperate search for sea ice that would allow it to hunt for seals.
"From his lying position in death the bear appears to simply have starved and died where he dropped," polar bear expert Dr. Ian Stirling, a professor at the University of Alberta said, "He had external suggestion of any remaining fat, having been reduced to little more than skin and bone．"
Stirling believes the bear starved to death as a result of a lack of sea ice which the animals use as a platform for hunting seals． That may also explain why the 16-year-old male bear was found about 155 miles north of where it was seen in April．
Arctic sea ice reached a record low in 2012, according to a report released this week by the National Oceanic and Atmospheric Administration that pointed to continued signs of climate change．
The International Union for Conservation of Nature currently classifies polar bears as vulnerable on its Red List of Threatened Species．How did Stirling know the reason for the death of the polar bear?
| A．By the food he ate |
| B．By doing further experiments |
| C．By observing other polar bears |
| D．By his lying position in death |
The underlined word "vulnerable" probably means _____
| A．easily hurt | B．difficult to hunt |
| C．dangerous | D．amazing |
What is the author's attitude to the incident?
| A．Favorable． | B．Uncaring |
| C．Doubtful． | D．Concerned |
Where does this text probably come from?
| A．A novel． | B．A guidebook |
| C．A news report． | D．An advertisement |
Sometimes life gets a little dull. What used to be fun and different becomes boring. That is the time to look for something new. It is the time for a big idea to get your mind off everyday life. So why not search for extraterrestrial (地球外的) intelligence? Or even better, why not get your computer to do it for you?
Over two million people have joined the Search for Extraterrestrial Intelligence（SETI）project. Based in California, the SETI project analyzes information taken from a giant radio telescope based in South America. Its task is to look for signals from outer space that might prove that life exists on other planets.
Processing this information is far too big a job for one computer. So the SETI project workers divide the work among volunteers who visit their website. Each computer gets some information to work out from the SETI network through the Internet. This process is often known as “meta-computing”.
It is a wonderful thought. You are sleeping, eating a meal or going out with friends. All this time, your computer is searching the stars for signs that might show something is out there trying to get in touch. Volunteers are proud of being involved in the SETI project. It shows that they understand the potential (潜能) of computing. They know that it is more than just a way of working or playing games.
Meta-computing may also be creating intelligence as well as looking for it. This idea is based on the theory that human intelligence is created by the way in which different parts of the brain communicate with each other. As the saying goes, “The whole is more than the sum of its parts.” People who join the SETI project sometimes wonder whether their computer will become part of a huge network that has learned to think for itself.According to the writer, meta-computing may be creating intelligence .
| A．because human beings are intelligent | B．because a computer works as the brain does |
| C．because of a network of many computers | D．because of the number of computers |
Which of the following shows the order in which the SETI network works?
| A．Radio telescope→SETI website→Volunteers’ computer→SETI base |
| B．Radio telescope→SETI base→SETI website→Volunteers’ computer |
| C．SETI base→SETI website→Volunteers’ computers→Radio telescope |
| D．SETI base→Radio telescope→SETI website→Volunteers’ computers |
The underlined word “it” in the last paragraph refers to _____ .
| A．extra-terrestrial intelligence | B．human intelligence |
| C．the SETI project | D．meta-computing |
The passage mainly tells us about _____.
| A．a new way to work on the computer |
| B．a new way to work and play games |
| C．a new way to search for life outside the earth |
| D．a new way to make computers learn to think for itself |
Health officials issued a waring over common energy-saving l一ghtbulbs(灯泡) after research showed some types could potentially harm the skin and may even raise the risk of cancer.
A study by the Health Protection Agency (HPA) found that some eco-friendly lightbuulbs release levels of ultraviolet (UV) (紫外线) radiation that are above recognized safety limits. The agency urged people who work with lamps nearby to avoid spending more than one hour within a foot of the eco-friendly bulbs. The warning was directed at those using desk lamps for long periods, such as jewellery makers, and others who might have lights close to their faces, such as car mechanics.
John O’Hagan, a scientist at the HPA’s centre for radiation, chemical and environmental dangers, began tests on the ligthbulbs after patient groups raised concern about them. Among the groups were patients with a skin disease called lupus, which makes people highly sensitive to light.
The tests measured UV light from the lamps and found the highest levels of UV radiation, measured 2cm from the lightbulbs, were equivalent to being outside in direct sunlight in the summer. The most immediate risk from the lightbulbs is a reddening of the skin similar to sunburn, but there is also a small increased risk of skin cancer associated with this, again similar to that of sunburn.
The risk of health problems from the lightbulbs was not so high that people should remove them from their homes. People are advised to avoid using open lightbulbs for long close work until the problem is sorted out. It has confirmed that the government will not be reviewing its strategy on introducing energy efficient lightbulbs.The underlined word “equivalent” in paragraph 4 most probably means ______.
| A．equal | B．vital | C．relevant | D．harmful |
In order not to be harmed by the UV radiation from some lightbulbs, people should ______.
| A．stop using eco-friendly lightbulbs at home |
| B．avoid using open lightbulbs for long close work |
| C．take care not to expose their skin to direct sunlight |
| D．urge the government to ban the use of lightbulbs |
In the next part, the author would most probably further explain _____.
| A．why people needn’t remove the lightbulbs from their homes |
| B．how researchers have planned to sort out the problem |
| C．how the government has responded to HPA’s discovery |
| D．how long people should work close to the open lightbulbs |
We can learn from the passage that ____.
| A．health officials issued a warning over common lightbulbs. |
| B．jewellery makers should avoid working with the eco-friendly bulbs for more than one hour |
| C．John O’Hagan did tests on the lightbulbs with some patients |
| D．people are advised to avoid using open lightbulbs for long close work |
Grown-ups know that people and objects are solid. At the movies, we know that if we reach out to touch Tom Cruise, all we will feel is air. But does a baby have this understanding?
To see whether babies know objects are solid, T. Bower designed a method for projecting an optical illusion（视觉影像） of a hanging ball. His plan was to first give babies a real ball, one they could reach out and touch, and then to show them the illusion. If they knew that objects are solid and they reached out for the illusion and found empty air, they could be expected to show surprise in their faces and movements. All the 16-to 24- week -old babies tested were surprised when they reached for the illusion and found that the ball was not there.
Grown-ups also have a sense of object permanence. We know that if we put a box in a room and lock the door, the box will still be there when we come back. But does a baby realize that a ball that rolls under a chair does not disappear and go to never-never land?
Experiments done by Bower suggest that babies develop a sense of object permanence when they are about 18 weeks old. In his experiments, Bower used a toy train that went behind a screen. When 16-week-old and 22-week-old babies watched the toy train disappear behind the left side of the screen, they looked to the right, expecting it to reappear. If the experimenter took the train off the table and lifted the screen, all the babies seemed surprised not to see the train. This seems to show that all the babies had a sense of object permanence. But the second part of the experiment showed that this was not really the case. The researcher substituted a ball for the train when it went behind the screen. The 22-week-old babies seemed surprised and looked back to the left side for the train. But the 16-week -old babies did not seem to notice the switch. Thus, the 16-week-old babies seemed to have a sense of “something permanence,” while the 22-week-old babies had a sense of object permanence related to a particular object. The passage is mainly about _____.
| A．babies' sense of sight | B．effects of experiments on babies |
| C．babies' understanding of objects | D．different tests on babies' feelings |
In Paragraph 3, “object permanence” means that when out of sight, an object _____.
| A．still exists | B．keeps its shape | C．still stays solid | D．is beyond reach |
What did Bower use in his experiments?
| A．A chair. | B．A screen. | C．A film. | D．A box. |
Which of the following statements is true?
| A．The babies didn't have a sense of direction. |
| B．The older babies preferred toy trains to balls. |
| C．The younger babies liked looking for missing objects. |
| D．The babies couldn't tell a ball from its optical illusion. |
The college entrance exam is not only a big challenge (挑战) for Chinese high school students, but also a very important exam in the lives of South Korean students.
Although the long, cold winter has already started in South Korea, the annual (一年一度的) national exams have made the atmosphere very heated.
More than 675,000 South Korean high school graduates took the college entrance exam last Wednesday. They usually take exams in Korean, maths, sociology (社会学), history and foreign languages.
Officially there is one college place for every 1.33 students. But because all the students want to go to the top universities in the country, the competition can reach one place for 10 students. The students want to attend these colleges for both their famous names and better job opportunities.
Because students face fierce competition, they have to study very hard to realize their dreams. Park Seung said he and his classmates often go to school before 7:30 a.m. After school has finished at 6:30 p.m., most of them go to the library to continue their study instead of returning home. Since many libraries in South Korea are open 24 hours a day, they often stay long into the night. Many of the Senior 3 students only sleep for three to four hours a day. “I feel a lot of pressure, but I have to study very hard in order to make my dream come true. This is my lifetime goal and it will be a turning point in my life which could decide my future,” Park said.
The exam day is a very serious day for the whole of South Korea. Vehicles are not allowed within a 200-metre radius (范围) of all the test sites to make sure the students have quiet surroundings. Tooting (吹奏) of horns is forbidden, even airplanes are ordered to avoid landing and take-off near the test sites during listening comprehension test hours.
Students are told their scores in December before they apply for college. This is followed by face-to-face oral tests. There are public and private universities in South Korea. Many private universities are well-known, but their fees can be 18, 000 yuan each term. This has made a lot of students think again.What do we know about South Korean annual national exams?
| A．Senior 3 students have to compete fiercely because there is only one place for 10 students. |
| B．Senior 3 students have to stay long into night at school. |
| C．Many of the Senior 3 students can’t have enough sleep. |
| D．Airplanes are ordered to avoid landing and take-off during national exams. |
We can infer that there are almost ________ college places for high school graduates.
| A．675, 000 | B．507, 520 | C．500, 000 | D．600, 000 |
The students want to study in top colleges mainly because ________.
| A．they can succeed more easily in future | B．they can learn more |
| C．they can make more money | D．it is interesting to study there |
Before students are allowed to colleges ________.
| A．they will be interviewed | B．they will ask questions of colleges |
| C．they will not be tested any more | D．first they will pay all the education fee at all |
Long bus rides are like television shows. They have a beginning, a middle, and an end with commercials （商业广告） thrown in every three or four minutes. The commercials are unavoidable. They happen whether you want them or not. Every couple of minutes a billboard glides by outside the bus window. "Buy Super Clean Toothpaste. ""Drink Good Wet Root Beer." "Fill up with Pacific Gas." Only if you sleep, which is equal to turning the television set off, are you spared the unending cry of "You Need It! Buy It Now!"
The beginning of the ride is comfortable and somewhat exciting, even if you’ve traveled that way before. Usually some things have changed—new houses, new buildings, sometimes even a new road. The bus driver has a style of driving and it’s fun to try to figure it out the first hour or so. If the driver is particularly reckless （鲁莽的） or daring, the ride can be as thrilling （惊心动魄的） as a suspense story. Will the driver pass the truck in time? Will the driver move into the rightor the lefthand lane? After a while, of course, the excitement dies down. Sleeping for a while helps pass the middle hours of the ride. Food always makes bus rides more interesting. But you’ve got to be careful of what kind of food you eat. Too much salty food can make you very thirsty between stops.
The end of the ride is somewhat like the beginning. You know it will soon be over and there’s a kind of expectation and excitement in that. The seat of course, has become harder as the hours have passed. By now you’ve sat with your legs crossed, with your hands in your lap, with your hands on the armrests even with your hands crossed behind your head. The end comes just at no more ways to sit.According to the passage, what do the passengers usually see when they are on a long bus trip?
| A．Buses on the road. | B．Films on television. |
| C．Advertisements on the billboards. | D．Gas stations. |
What is the purpose of this passage?
| A．To give the writer’s opinion about long bus trips. |
| B．To persuade you to take a long bus trip. |
| C．To explain how bus trips and television shows differ. |
| D．To describe the billboards along the road. |
The writer feels long bus rides are like TV shows because____ .
| A．the commercials both on TV shows and on billboards along the road are fun |
| B．they both have a beginning, a middle, and an end, with commercials in between |
| C．the drivers are always reckless on TV shows just as they are on buses |
| D．both traveling and watching TV are not exciting. |
The writer thinks the end of the ride is somewhat like the beginning because both are____ .
| A．exciting | B．comfortable | C．tiring | D．boring |
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