For centuries, medical pioneers have refined a variety of methods and medicines to treat sickness, injury, and disability, enabling people to live longer and healthier lives.
“A salamander (a small lizard-like animal) can grow back its leg. Why can't a human do the same?” asked Peruvian-born surgeon Dr. Anthony Atala in a recent interview. The question, a reference to work aiming to grow new limbs for wounded soldiers, captures the inventive spirit of regenerative medicine. This innovative field seeks to provide patients with replacement body parts.
These parts are not made of steel; they are the real things --- living cells, tissue, and even organs.
Regenerative medicine is still mostly experimental, with clinical applications limited to procedures such as growing sheets of skin on burns and wounds. One of its most significant advances took place in 1999，when a research group at North Carolina’s Wake Forest Institute for Regenerative Medicine conducted a successful organ replacement with a laboratory-grown bladder. Since then, the team, led by Dr. Atala, has continued to generate a variety of other tissues and organs 一 from kidneys to ears.
The field of regenerative medicine builds on work conducted in the early twentieth century with the first successful transplants of donated human soft tissue and bone. However, donor organs are not always the best option. First of all, they are in short supply, and many people die while waiting for an available organ; in the United States alone, more than 100,000 people are waiting for organ transplants. Secondly, a patient’s body may ultimately reject the transplanted donor organ. An advantage of regenerative medicine is that the tissues are grown from a patient’s own cells and will not be rejected by the body’s immune system.
Today, several labs are working to create bioartificial body parts. Scientists at Columbia and Yale Universities have grown a jawbone and a lung. At the University of Minnesota, Doris Taylor has created a beating bioartificial rat heart. Dr. Atala’s medical team has reported long-term success with bioengineered bladders implanted into young patients with spina bifida (a birth defect that involves the incomplete development of the spinal cord). And at the University of Michigan, H. David Humes has created an artificial kidney.
So far, the kidney procedure has only been used successfully with sheep, but there is hope that one day similar kidney will be implantable in a human patient. The continuing research of scientists such as these may eventually make donor organs unnecessary and, as a result, significantly increase individuals’ chances of survival.In the latest field of regenerative medicine, what are replacement parts made of?
| A．Donated cells, tissues and organs. |
| B．Rejected cells, tissues and organs. |
| C．Cells, tissues and organs of one’s own. |
| D．Cells, tissues and organs made of steel. |
What have scientists experimented successfully on for a bioartificial kidney?
| A．Patients. | B．Rats. | C．Sheep. | D．Soldiers. |
Why is generative medicine considered innovative?
| A．It will provide patients with replacement soft tissues. |
| B．It will strengthen the human body’s immune system. |
| C．It will shorten the time patients waiting for a donated organ. |
| D．It will make patients live longer with bioartificial organs. |
What is the writer’s attitude towards regenerative medicine?
| A．Positive. | B．Negative. |
| C．Doubtful. | D．Reserved. |
Popeye the Sailor first became a popular cartoon in the 1930s.The sailor in that cartoon ate lots of spinach(菠菜) to make him strong. People watched him, and they began to buy and eat a lot more spinach. Popeye helped sell 33 percent more spinach than before! Spinach became a necessary part of many people’s diets. Even some children who hated the taste began to eat the vegetable.
Many people thought that the iron in spinach made Popeye strong, but this is not true. Spinach does not have any more iron than any other green vegetable.
People only thought spinach had a lot of iron because the people who studied the food made a mistake. In the 1890s, a group of people studied what was inside vegetables. This group said that spinach had ten times more iron than it did. The group wrote the number wrong, and everyone accepted it.
Today, we know that the little iron there is in spinach cannot make a difference in how strong a person is. However, spinach does have something else which the body needs—folic acid(叶酸).
It is interesting to point out that folic acid can help make a person strong. Maybe it was really the folic acid that made Popeye strong all along.A good title for this reading passage is______.
| A．Popeye the Sailor |
| B．The Truth About Spinach |
| C．A Mistake with Numbers |
| D．Folic Acid Makes You Strong |
Why did many people eat spinach after they saw Popeye the Sailor?
| A．They thought spinach made them strong. |
| B．They thought Popeye was funny. |
| C．Spinach had a lot of iron. |
| D．People liked folic acid. |
A research group told people that spinach______.
| A．made Popeye strong |
| B．was a green vegetable |
| C．had less iron than other green vegetables |
| D．had more iron than other green vegetables |
Folic acid is ______.
| A．something in food |
| B．a vegetable |
| C．dangerous |
| D．a certain kind of spinach |
A traveller was staying in an Egyptian village. One day, she held up her camera to take pictures of the children. Suddenly the young ones began to shout at her. The traveller's face turned red and she apologized to the head for what she was doing, and told him she had forgotten that people in some places believed a person would lose his soul(灵魂) if his picture was taken. She explained to him the operation of a camera for a long time. Several times the head tried to say something, but he couldn't. When she believed that the head didn't fear any longer, the traveller then let him speak. With a smile, he said, "The children were trying to tell you that you forgot to take off the lens(镜头) cap!" The children shouted when the traveller was taking pictures of them because _______.
| A．they didn't want to stop playing |
| B．the traveller forgot to take off the cap on her head |
| C．they didn't want to have their pictures taken |
| D．the traveller was not doing well with her camera |
The traveller made an apology to (向……道歉) the head because _______.
| A．she thought it was not right to take people's pictures without telling them beforehand (事先) |
| B．the children would lose their souls |
| C．she had stayed in the village too long |
| D．she didn't take a picture of the head first |
The traveller explained how to use a camera to the head because _______.
| A．the head was very interested in her camera |
| B．the head wanted to learn to take pictures |
| C．she was afraid of the head |
| D．she wanted the head not to worry about what she was doing |
Which of the following is NOT right?
| A．The traveller knew something about people in some countries. |
| B．The children wouldn't mind if the traveller took pictures of them. |
| C．The head was afraid that the traveller's camera would hurt the children. |
| D．The traveller didn't understand why the children shouted. |
There was a story many years ago of a school teacher--- Mrs. Thompson. She told the children on the first day that she loved them all the same. But that was a lie. There in the front row was a little boy named Teddy Stoddard. He didn’t play well with the other children and he always needed a bath. She did not like him.
Then Mrs. Thompson got to know that Teddy was actually a very good boy before the death of his mother. Mrs. Thompson was ashamed of herself. She felt even worse when, like all her other students, Teddy brought her a Christmas present too. It was his mother’s perfume(香水)。
Teddy said, “Mrs. Thompson, today you smell just like my Mom used to.” After the children left she cried for at least an hour. On that very day, she stopped teaching reading, writing and math. Instead, she began to teach children.
Mrs. Thompson paid particular attention to Teddy. The boy’s mind seemed to come alive. The more she encouraged him, the faster he improved. By the end of the sixth grade, Teddy had become one of the smartest children in the class.
Six years went by before she got a note from Teddy. He wrote that he had finished high school, third in his class, and she was still the best teacher he ever had in his whole life. He went to college. Mrs. Thompson got two more letters from him with the last one signed, Theodore F. Stoddard, M. D. (医学博士).
The story doesn’t end there. On his wedding day, Dr. Stoddard whispered in Mrs. Thompson’s ear, “Thank you, Mrs. Thompson, for believing in me. You made me feel important and showed me that I could make a difference.”
Mrs. Thompson, with tears in her eyes, whispered back, “Teddy, you have it all wrong. You were the one who taught me that I could make a difference. I didn’t know how to teach until I met you.”What did Mrs. Thompson do on the first day of school?
| A．She made Teddy feel ashamed. |
| B．She asked the children to play with Teddy. |
| C．She changed Teddy’s seat to the front row. |
| D．She told the class something untrue about herself. |
What did Mrs. Thompson find out about Teddy?
| A．He often told lies. |
| B．He was good at math. |
| C．He needed motherly care. |
| D．He enjoyed playing with others. |
In what way did Mrs. Thompson change?
| A．She taught fewer school subjects. |
| B．She became stricter with her students. |
| C．She no longer liked her job as a teacher. |
| D．She cared more about educating students. |
Why did Teddy thank Mrs. Thompson at his wedding?
| A．She had kept in touch with him. |
| B．She had given him encouragement. |
| C．She had sent him Christmas presents. |
| D．She had taught him how to judge people. |
Most American students have to say goodbye to fancy (高档的) fruits these days. In school restaurants across the country, cheaper fruits like apples and oranges have taken their place.
“People are afraid to spend now.” said Linda Morrow, who owns a shoe and handbag store. “They don’t know what the future will bring”. During the financial crisis (金融危机), several of the country’s biggest banks have been forced to sell or close. This has made lots of Americans afraid to buy expensive things.
The crisis began last year. Experts (专家) think it was because US banks lend money too easily. Last year a lot of people and companies, who borrowed money, found themselves unable to pay it back. This left the banks, as well as the people who put their money in the banks, without money. Since the banks borrowed money between themselves and even across borders (国界), the whole world was in trouble.
This month the US government agreed on a $700 billion plan to try to save the financial market. But no one is sure whether it will help or not. Last week presidents from 20 countries promised to work together to find a way out of the money trouble. This passage is probably taken from ___________.
| A．a story book | B．a novel | C．a newspaper | D．an advertisement |
Why are people in the US afraid to spend?
| A．Because they think it’s unnecessary |
| B．Because they don’t have the habit of spending money |
| C．Because they worry about their future |
| D．Because they don’t have any money |
From the passage, we still don’t know ________.
| A．when the financial crisis began |
| B．when the financial crisis will end |
| C．why some of the US banks closed |
| D．whether the crisis has spread to other countries |
The best title for the passage is ___________.
| A．Ways to Save Money |
| B．Financial Crisis facing the World |
| C．Banks in the USA |
| D．The USA Becoming Poor |
If you exhibit positive characteristics such as honesty and helpfulness, the chances are that you will be thought as a good-looking person, for a new study has found that the perception （认知） of physical attractiveness is influenced by a person's personality．
The study, which was led by Gary W．Lewandowski, has found that people who exhibit negative characteristics, such as unfairness and rudeness, appear to be less physically attractive to observers．In the study, the participants viewed photographs of opposite-sex individuals and rated them for attractiveness before and after being provided with information about their personalities．
After personality information was received, participants also rated the probability of each individual' s becoming a friend and a dating partner．Information on personality was found to significantly change the probability, showing that cognitive （认知的） processes modify （修改） judgments of attractiveness．
"Thinking a person as having a desirable personality makes the person more suitable in general as a close relationship partner of any kind," said Lewandowski．
The findings show that a positive personality leads to greater expectation of becoming friends, which leads to greater expectation of becoming romantic partners and, finally, to being viewed as more physically attractive．The findings remained consistent regardless of how "attractive" the individual was formerly thought to be or of the participants' current relationship status．
"This research provides a positive outcome by reminding people that personality goes a long way toward determining your attractiveness; it can even change people's impressions of how good-looking you are," said Lewandowski．In the study the participants were required to _____．
| A．try to make friends with each other |
| B．try to prove positive characters make people more attractive |
| C．exhibit negative characters such as unfairness and rudeness |
| D．rate one's attractiveness by photos before and after knowing her or his personality |
What's the CORRECT order of how cognitive processes modify judgments of attractiveness?
a．find a person with a positive personality
b．view the person more physically attractive
c．want to make friends with the person
d．want to be his/ her romantic partner
| A．a→c→d→b | B．d→c→b→a | C．c→b→a→d | D．a→d→c→b |
Which of the following is WRONG according to the passage?
| A．The research reminds people to pay more attention to the personality． |
| B．Personality can change people's impressions of one's appearance． |
| C．The judgment of one's attractiveness always stays unchanged． |
| D．Positive personality may lead to more friends． |
The passage is written in a（n） _____ tone．
| A．subjective | B．objective | C．sceptical | D．negative |
Who are the intended readers of this passage?
| A．People with positive characteristics． |
| B．Good-looking people． |
| C．People with negative characteristics． |
| D．General people． |