It is difficult for doctors to help a person with a hurt brain. Without enough blood, the brain lives only three to five minutes. Sometimes the hurt brain gets better by itself. More often the doctors can't fix the hurt brain. Sometimes they are afraid to try something to help. It is dangerous to work on the brain. The doctor might make the person worse if he works on the brain.
Dr. Robert J. White, a famous professor and doctor, thinks he knows a way to help. He thinks doctors should try to make the brain become very cold. If it is very cold, the brain can live without blood for 30 minutes. This gives the doctors a longer time to do something for the brain.
Dr. White tried his idea on 13 monkeys. First he taught them to do different jobs. Then he opera-ted on them. He made the monkeys' blood go through a machine. The machine cooled the blood. Then the machine sent the blood back to the monkeys' brains. When the brain temperature was 10 degrees. Dr. White stopped the blood to the brain. After 30 minutes he turned the blood back on. He warmed the blood again. After their operations, the monkeys were like they were before. They were healthy and busy. Each one could still do the jobs the doctor had taught them.
Dr. White's idea works well on the monkeys. Are there other problems with human beings? Dr. White thinks doctors will use his idea on human beings. He thinks it will help people who have heart problems, too. A person doesn't have to die when his heart stops? doctors can start it again. The problem comes when the brain is without blood for three to five minutes—the person has a living body, but a dead brain. Maybe in the future, doctors will try Dr. White's idea. When the person's heart stops, the doctors will quickly try to cool the brain. They will have 30 minutes to start the heart again. Maybe there will be no problem with the brain. People probably die when __________.
| A．their brain dies |
| B．their heart stops |
| C．they stop breathing |
| D．their brain becomes very hot |
Dr. White thinks his idea about cooling the brain will work because __________.
| A．he has tried it on people |
| B．he has tried it on monkeys |
| C．he has tried it on heart problems |
| D．he has tried it on himself |
Which of the following is not true?
| A．Doctors can begin the heart again in five minutes. |
| B．Doctors can begin the heart again after 30 minutes. |
| C．Doctors can change patients' hearts. |
| D．Doctors can change a person's face. |
According to the writer，__________.
| A．it is not difficult to repair the brain damage |
| B．it is worse to make a mistake on the brain than any other part of the body |
| C．brain is not an important part in one's body |
| D．brain doesn't need blood |
Imagine that the genome （基因组） is a book．The book consists of 23 chapters with thousands of stories made up of paragraphs, words and letters on different levels．There are one billion words in the book, as long as 800 Bibles; if I read the genome out to you at the rate of one word per second for eight hours a day, it would take me centuries; if I wrote out the human genome, one letter per millimeter, my text would be as long as the River Danube．This is a huge volume, a book of great length, but it all fits inside an extremely small cell nuclear（细胞核） that fits easily upon the head of a pin．
The idea of the genome as a book is not, strictly speaking, even a metaphor．It is true to a great extent．A book is a piece of digital information, written in one-directional form and defined by a code that translates a small alphabet of signs into a large dictionary of meanings through the order of their groupings．So is a genome．The only difference is that all English books read from left to right, while some parts of the genome read from left to right while some from right to left, but never both at the same time．
While English books are written in words of different lengthens using twenty-six letters, genomes are written entirely in words of three-letter length, using only four letters, and instead of being written on flat pages, they are written on long chains of DNA molecules （分子）．
The genome is a very clever book, because in the right condition it can both photocopy itself and read itself．How do human genomes read according to the passage?___________
| A．Only from left to right． |
| B．Only from right to left． |
| C．From both directions at the same time． |
| D．From one direction at a time． |
We can learn from the passage that the human genome ________．
| A．is as long as the River Danube |
| B．can be easily placed on the head of a pin |
| C．is coded with an alphabet of four letters |
| D．is smart enough to read and take photos of itself |
It can be concluded that the passage is mainly written for ______．
| A．specialists in the field |
| B．general readers |
| C．natural scientists |
| D．readers with professional knowledge |
The real purpose of the author’s comparison of the genome to a book is _____．
| A．to focus on the differences between the two |
| B．to lay emphasis on the similarities between the two |
| C．to simplify the concept of the human genome |
| D．to give an exact description of the human genome |
It is reported that conservation groups in North America have been arguing about the benefits and dangers of wolves. Some groups believe wolves should be killed. Other people believe wolves must be protected so that they will not disappear from the wilderness (荒野)
For Killing Wolves
In Alaska, the wolf almost disappeared a few years ago, because hunters were killing hundreds of them for sport. However, 1aws were established to protect the wolves from sportsmen and people who catch the animals for their fur. So the wolf population has greatly increased. Now there are so many wolves that they are destroying their own food supply.
A wolf naturally eats animals in the deer family. People in the wilderness also hunt deer for food. Many of the animals have been destroyed by the very cold winters recently and by changes in the wilderness plant life. When the deer can’t find enough food, they die.
If the wolves continue to kill large numbers of deer, their prey (猎物) will disappear some day. And the wolves will, too. So we must change the cycle of life in the wilderness to balance the ecology(生态平衡）. If we killed more wolves, we would save them and their prey from dying out. We’d also save some farm animals.
In another northern state, wolves attack cows and chickens for food. Farmers want the government to send biologists to study the problem. They believe it necessary to kill wolves in some areas and to protect them in places where there is a small wolf population.
Against Killing Wolves
If you had lived long ago, you would have heard many different stories about the dangerous wolf. According to most stories, hungry wolves often kill people for food. Even today, the stories of the “big bad wolf'” will not disappear.
But the fact is wolves are afraid of people, and they seldom travel in areas where there is a human smell. When wolves eat other animals, they usually kill the very young, or the sick and injured .The strongest survive .No kind of animal would have survived through the centuries if the weak members had lived. And has always been a law of nature.
Although some people say it is good sense to kill wolves, we say it is nonsense! Researchers have found wolves and their prey living in balance. The wolves keep the deer population from becoming too large, and that keeps a balance in the wilderness plant life.
The real problem is that the areas where wolves can live are being used by people. Even if wilderness land is not used directly for human needs, the wolves can’t always find enough food. So they travel to the nearest source, which is often a farm. Then there is danger. The“big bad wolf”has arrived! And everyone knows what happens next.Some people are against killing wolves because ________.
| A．there are too many deer in the wilderness |
| B．wolves are afraid of people and never attack people |
| C．wolves help to keep the ecological balance in the wilderness |
| D．there is too small a wolf population in the wilderness |
According to those against killing wolves, when wolves eat other animals, ________.
| A．they might help this kind of animals survive in nature |
| B．they disturb the ecological balance in the wilderness |
| C．they never eat strong and healthy ones |
| D．they always go against the law of nature |
The last sentence “And everyone knows what happens next” implies that in such cases _______.
| A．wolves will find enough food sources on farms |
| B．people will leave the areas where wolves can live |
| C．farm animals will be in danger and have to be shipped away |
| D．wolves will kill people and people will in turn kill them |
Whatever field we are involved in，we always have to look for ways to expand our knowledge.An increase in knowledge in a particular subject can lead to a better understanding，grasp，judgment，intelligence and ability in that area.So how do we go about gaining knowledge?
I think people are the biggest source of knowledge for anybody.Right from childhood，we have learned things by watching others.Whatever field you want to gain knowledge in，there must be many who have experience in that field.So make use of this valuable source of information by learning from the experience，success，mistakes and skills of others. Study carefully and associate with people who are experts in the field you want to gain knowledge in.
The next best source of knowledge should be books.There are millions and millions of books in every language and on almost any topic imaginable.Whatever problem you are facing must have been faced by somebody else before，and its solution is likely to have been preserved in the form of a book.If you are serious about gaining knowledge about a topic，then read any book，magazine，article etc.You can lay your hands on the books related to that topic.Read as much as you can.
It is said that experience is a great teacher，so learn from your past experience and the experience of others.Learn from your and others’ past and present achievements as well as mistakes.
Experimenting with new things and observing new things can help you learn very quickly. Keep in mind，though，that while experimenting，you may encounter a few failures , too.Do not become discouraged as failures are a part of the learning curve，especially while attempting something new.Try to earn from failures instead of becoming disheartened.Which of the following statements is TRUE according to this text?
| A．Books are the biggest source of knowledge. |
| B．An expert can teach people everything useful. |
| C．Mistakes are the best source of knowledge. |
| D．People from an early age have learned things from others. |
If a person decides to learn about a topic，he or she should________.
| A．prepare well for the coming problems |
| B．experiment or observe as much as possible |
| C．read as many books related to that topic as possible |
| D．make friends with as many experts in that field as possible |
The author would NOT agree that________.
| A．experimenting with new things is the quickest way to learn |
| B．people can learn from their own experience and others’ |
| C．people can learn from both achievements and mistakes |
| D．failures teach people something |
This text mainly talks about________.
| A．the importance of learning |
| B．means of gaining knowledge |
| C．ways to become successful |
| D．the advantages of reading |
Although credit cards are becoming a more acceptable part of the financial scene, they are still regarded with doubts by many as being a major part of the “live now pay later” syndrome（综合症）．Along with hire-purchase, rental and leasing schemes（租赁项目）, they provide encouragement to spend more money．Of course, it is only the hotheaded who give way to the temptation to live, temporarily at least, beyond their means, and such people would no doubt manage to do so even without credit cards．
Advertising campaigns have, however, promoted a growing realization of the advantages of these small pieces of plastic. They prevent need to carry large amounts of cash and are always useful in emergencies．
All the credit card organizations charge interest on a monthly basis which may work out as high as 25 per cent a year, yet sensible purchasing using a card can mean that you obtain up to seven weeks, interest-free credit．Using the card abroad, where items frequently take a long time to be included on your account, can extend this period even further．
It is worthwhile shopping around before deciding on a particular credit card. It is necessary to consider the amount of credit granted; interest rates, which may vary slightly; the number and range of outlets（经销店）, though most cards cover major garages, hotels, restaurants and department stores; and of course, what happens if your card is lost or stolen．A credit card thief may be sitting on a potential goldmine particularly if there is a delay in reporting the loss of the card．
However, if used wisely, a credit card can cost nothing, or at least help to tide you over a period of financial difficulty．The hotheaded are people who ________．
| A．spend more money than they have |
| B．spend less money than other people |
| C．save money |
| D．make money |
The disadvantage of credit cards is ________．
| A．to enable you to buy things without carrying large amount of cash |
| B．to encourage people to spend more money |
| C．to be always useful in emergencies |
| D．to help people tide over a period of financial difficulty |
Deciding on a particular credit, you do not have to consider ________．
| A．the amount of credit granted |
| B．the number and range of outlets |
| C．the possibility of loss of money |
| D．the department stores where you are going to use your credit cards |
The underlined words in the last paragraph probably means ________．
| A．floating with the tide of | B．going through a difficult period of |
| C．rising and falling with the tide of | D．attempting to go against the tide of |
Spring is the time to go out and enjoy the weather and scenery．Here are some events to attend in March of 2012 in Oregon!
Oregon Country Fair（OCF）, 9 am to 7 pm on March 8 - 10
OCF first started in 1969, and it’s blossomed into an outstanding example of what a non - profit should be. OCF is an event of shopping & atmosphere, and food ranging from Indian & Afghani cuisine to Italian & France cuisine．Wonderful craft & music never stop．From the time you get there until the time you leave, everyone has a smile on their faces, and they wave and say hello．For tickets, go and visit www．Oregoncountryfair．org．
30th Annual Seaside Beach Volleyball Tournament, 8 am to 6 pm on March 12 - 14
The Annual Seaside Beach Volleyball Tournament is an amateur tournament that draws amateur volleyball players to the small town of seaside, as well as AVP Team players who are the best volleyball players．In the past years, it has drawn more than 700 teams playing on over 80 volleyball courts．Just go west, and you can’t miss it．It is about 20 miles south of Astoria．To learn more about it, visit the website www．Seasideor．com．
Hood to Coast Relay, 3:30 am to 6:45 pm on March 26 - 27
The Hood to Coast Relay is a 200 - mile - long relay that consists of 15, 000 runners and 4, 100 volunteers．It’s the largest relay in the world, which goes from Mt．Hood to Pacific Ocean in Seaside, Oregon．People of the Oregon coast fear Hood to Coast, because local towns and streets are flooded．There are audiences cheering riders on, and many people set up stations to give riders water．If you would like to get the race route maps, visit the website www. Hoodtocoast. com．
Other event information
To learn about other events, visit the website www. Aadfv. Blogspot. com．OCF covers the following EXCEPT ________．
| A．music | B．dishes | C．dance | D．artworks |
When was the first Seaside Beach Volleyball Tournament held in Oregon?
| A．In 1982． | B．In 1986． | C．In 1988． | D．In 1992． |
If Lisa wants to learn more about an outing in Oregon, she may visit _______．
| A．www．Seasideor．com． |
| B．www．Hoodtocoast．com． |
| C．www．aadfv．blogspot．com． |
| D．www．Oregoncountryfair．org． |
Locals of the Oregon coast are afraid of the relay because ________．
| A．the relay will last a long period | B．they have to offer food and water |
| C．the weather is bad during the relay | D．too many people will go there |