Chinese scientists have found a new way to use cells found in human urine （尿液）that could aid in the treatment of a range of nerve disorders.That is a new technique for reprogramming cells in human urine into nerve progenitor cells that can grow into multi-functional nerve and brain cells.
The technique is expected to be used in the study and treatment of nerve disorders such as Parkinson's disease, Alzheimer's disease and other nerve disorders.
Pei Duanqing, a professor at Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, said his research team has combined an episomal system to deliver reprogramming factors with a chemically defined culture medium to reprogram kidney epithelial(肾表皮) cells in urine into NPCs.
These NPCs, normally only found in the human brain, were later proven to be transgene-free and self-renewing, he said.
"These nerve and brain cells can survive for up to one month when transplanted into the brain of a newborn rat," said Pei. "My team is working hard to understand why our experimental condition allowed the urine cells to become NPCs, because we want to improve the technique and make it more efficient".
Scientists have long searched to treat and study neural disorders by obtaining and transplanting neural stem cells. However, the previous method of getting and using cells from either fetal (胎儿)or adult human tissue remains challenging due to ethical concerns and immune system rejections, he said.
Pei hopes the discovery will be used to generate NPCs from patients with nerve disorders such as Parkinson's disease. "These NPCs from patients may help us discover new drugs for these diseases."
"It is a remarkable advance in the stem cell field. The results and methods obtained from this study will be of great value and significance to the field, " said Fred Gage,a professor with the Salk Institute for Biological Studies.What is the passage mainly about?
| A．NPCs are beneficial in treating human diseases. |
| B．Chinese scientists succeeded in making NPCs from human urine. |
| C．Chinese scientists have found cures for all diseases. |
| D．A new technique was used to study the use of human urine |
Pei and his tean try their best to work hard in order to .
| A．make more contributions to medical study |
| B．discover another new technique |
| C．make the technique more perfect |
| D．treat more patients suffering from bad diseases |
What is the challenge of making NPCs in the previous method?
| A．The ethical comcerns and immune system refusal |
| B．The difificulties in getting cells from human. |
| C．The under-developed techniques in medical science. |
| D．The lack of financial support from the government. |
From the last paragraph we can infer .
| A．the new technique will be developed in science |
| B．the results and methods will be applied to treating cancers |
| C．the study will give a major push to the stem cell field |
| D．the mew technique will bring great profis |
A small piece of fish each day may keep the heart doctor away. That's the finding of an extensive study of Dutch men in which deaths from heart disease were more than 50 percent lower among those who consumed(消费) at least an ounce of salt water fish per day than those who never ate fish.
The Dutch research is one of three human studies that give strong scientific backing to the long-held belief that eating fish can provide health benefits, particularly to the heart.
Heart disease is the number-one killer in the United States , with more than 550, 000 deaths occurring from heart attacks each year . But researchers previously have noticed that the incidence (发生率)of heart disease is lower in cultures that consume more fish than Americans do. There are fewer heart disease deaths, for example, among the Eskimos of Greenland, who consume about 14 ounces of fish a day, and among the Japanese, whose daily fish consumption averages more than 3 ounces.
During the next two decades, 78 of the men died from heart disease. The fewest deaths were among the group who regularly ate fish, even at levels far lower than those of the Japanese or Eskimos. This relationship was true regardless of other factors such as age , high blood pressure , or blood cholesterol (胆固醇) levels .
64. Which of the following is NOT true according to the passage?
A. The Dutch research has proved that eating fish can help to prevent heart disease.
B. There is a low incidence of heart disease in countries like Japan and Greenland.
C. Among all the diseases heart disease is the most dangerous in America.
D. Heart doctors won’t call your house so long as 
you keep eating fish each day.
65. The underlined phrase “this relationship” refers to the connection between _______ and the incidence of heart disease.
A. the amount of fish eaten B. regular fish-eating
C. the kind of fish eaten D. people of different regions
66. The passage is mainly about __________________.
A. the high incidence of heart disease in some countries
B. the changes in people’s diet in the United States
C. the daily fish consumption of people in different cultures
D. the effect of fish eating regularly on people’s health
67. How many lives could probably be saved each year in the United States by eating fish according to the Dutch study?
A. 550, 000. B. 110,000. C. 275,000. D. 852.
Dear Mr. Thunders,
We would like to introduce ourselves. Our company was organized only two years ago, but we are one of the largest boat companies in California. As you know, your son bought a boat from us recently, and I think you know how pleased h
e is with our product. Also, John Webb, one of your son's friends, has bought a boat from us and, w
e understand, is very happy with his boat. We are always happy to know that our customers are satisfied. We are writing to you now because, as you know, your son has decided to buy a larger boat, and we need your signature on the loan(贷款) papers. The loan application has already been signed b
y Danny. As you will see, there is one form to fill out, and there are three contracts to sign. Danny's 26-foot boat was returned to our San Pedro Dock yesterday, and we are pleased to say that the new 36-foot "Challenger" will be delivered(送达) two weeks from today. It is being inspected by ou
r manager right now. The auto-pilot(自动领航仪) has already been installed by our mechanic. It looks as though everything will be ready in time for delivery. All we need are the signed contracts from you.
Thank you.
Sincerely yours,
Tony Valention
59. This is a letter Mr. Thunders received from _______________.
A. Tony Valention in England B. a boat company in California
C. Danny, a salesman in California D. a bank manager in California
60. Tony wrote to Mr. Thunders to ______.
A. tell him to sign the contracts B. thank him for buying a new boat
C. tell about something of his company D. ask him to pay for his boat right away
61. The underlined word “installed” means “______”.
A. fixed B. checked C. bought D. removed
62. From the letter we can see that the boat company ______.
A. is a world-famous one B. is developing slowly
C.doesn't has a long history D. has to advise customers to buy its boats
63. Danny wants to change the 26-foot boat for a new 36-foot "Challenger" because _______.
A. the former one is broken down B. the new one has modern equipment
C. the former one doesn't work well D. the new one is a little larger
第三部分：阅读理解（每小题2分；共40分）
When many people are worried that there are no more heroes in the modern era，two university students who lost their lives to rescue drowning children have shown that heroes still exist．
According to the Inner Mongolia Morning Post，the tragedy（悲剧） occurred on the afternoon of December 14,2002 when three school students skating on a frozen lake in Qingcheng Park in Hohhot fell through the ice into the freezing water．
More than 20 university students who happened to be near the spot immediately went to the rescue of the children．Two children were quickly rescued，but the third died．The child's body was not found for three hours． Two of the rescuers，Liu Ye and Hao Longbiao，also died of cold and exhaustion．The body of Hao who took the lead in jumping into the lake was not found until the next day．
A student who was unwilling to tell his name said he and his classmates from the local college were taking photos at the lake． When they heard the children's cries for help， they went to the ice hole hand in hand to rescue the children． But the ice kept breaking， causing most of them to fall into the icy water．
Local residents held mourning ceremonies（祭奠仪式） at the lake．
Eight of the students were seriously affected by the freezing water and were being kept in hospital for further observation， but their lives were no longer in danger．
56． When the three students fell into water， the university students were ＿＿＿＿＿．
A． skating on the ice B． taking photos at the lake
C． having a picnic D． walking along the lake
57． Which of the following is TRUE according to the passage？
A． Three students died on the same day in all．
B． Hao Longbiao’s body was found on December 14,2002．
C． The university students didn’t think it dangerous to save the drowning children in the lake．
D． Local residents were not brave in face of danger．
58． It can be inferred that ＿＿＿＿．
A． people think little of the two university students' death
B． the ice on the lake wasn't strong enough to skate on
C． some students regretted for what they had done
D． heroes don't agree with the steps of modern times
In Canada you can find dogs， cats， horses，etc．in almost every family．These are their pets．People love these pets and have them as their good friends．Before they keep them in their houses，they take them to animal hospitals to give them injections（注射）so that they won't carry disease．They have special animal food stores，though they can get animal food in almost every kind of store．Some people spend around two hundred Canadian dollars a month on animal food.When you visit people's houses，they would be very glad to show you their pets and they are very proud of them．You will also find that almost every family has a bird feeder in their garden．All kinds of birds are welcomed to come and have a good meal． They are free to come and go and nobody is allowed to kill any animal in Canada．They have a law against killing wild animals．If you killed an animal，you would be punished.If an animal happened to get run over by a car，people would be very sad about it．
People in Canada have many reasons to like animals． One of them might be：Their family ties are not as close as ours． When children grow up， they leave their parents and start their own life． Then the old will feel lonely． But pets can solve this problem． They can be good friends and never leave them alone．
67． The passage mainly talks about．
A． how to keep disease from pets B． pets in Canada
C． how to take good care of pets D． life of the old in Canada
68．They give their pets injections before keeping them at their houses because．
A． the pets are sick
B． the pets are wild
C．they want to stop them from carrying disease
D．they want them to sleep on the way home
69． In Canada， children leave their parents when they grow up because ＿＿＿＿＿．
A.they don't love their parents any more B.they can only find jobs far from their parents
C.their parents' houses are too small D.they wouldn't depend on their parents any more
70． Which of the following is TRUE？
A.People buy animal food only at the animal food stores． B.Pets eat better than people．
C.Almost every family has a birdcage in his house． D.Any bird can come to the bird feeders to eat．
Will it matter if you don’t take your breakfast?A short time ago,a test was given in the United States.People of different ages from 12 to 83 were asked to have a test.During the test,these people were given all kinds of breakfasts,and sometimes they got no breakfast at all.Scientists wanted to see how well their body worked when they had eaten different kinds of breakfasts.
The results show that if he or she eats a right breakfast,he or she will work better than if he or she has no breakfast.If a student has fruit,eggs,bread and milk before going to school,he will learn more quickly and listen more carefully in class.
The result is opposite to what some people think.Having no breakfast will not help you lose weight.This is because people become so hungry at noon that they eat too much for lunch.They will gain weight instead of losing it.You will lose more weight if you reduce your other meals.
64.During the test,the people were given .
A.no breakfast at all B.very rich breakfast
C.different foods or sometimes none D.little food for breakfast
65.The results show that .
A.breakfast has little to do with a person’s work
B.breakfast has a great effect on work and studies
C.a person will work better if he only was fruit and milk
D.girl students should have less for breakfast
66.Which of the following is NOT true?
A.It is bad for your health to have no breakfast
B.Too little for breakfast and too much for lunch may make you fatter
C.If you don’t eat much for lunch and supper,you may lose weight
D.The more breakfast you have,the more quickly you’ll learn in class