题目内容
Surgeons in Spain have successfully carried out the world’s first organ transplant using new stem cell technology. Some people are calling it the greatest medical breakthrough so far this century.
But what are stem cells? As we know, most cells in our bodies are designed to serve specific purposes – for example, a liver cell develops to work in the liver and cannot become a heart cell. But stem cells are different. They are very young, and in the laboratory scientists can grow them into different types of cell.
Claudia Castillo needed a new windpipe after getting a serious disease. Scientists from the University of Bristol in the UK took a donor windpipe, or trachea, from someone who had recently died. They used strong chemicals to remove the donor’s cells, leaving a tissue scaffold(组织支架). This was refilled with cells from Ms Castillo’s windpipe, and stem cells from her bone. After four days the cells had grown sufficiently for the windpipe to be transplanted into Ms Castillo.
Currently, transplant patients have to take drugs for the rest of their lives to prevent their bodies rejecting the new organs. These drugs can have bad side-effects, and do not always prevent rejection. But by using Ms Castillo’s own cells, doctors were able to trick her body into thinking the new windpipe was her own organ. Five months on, Claudia Castillo is in perfect health.
This ground-breaking procedure could be used in other transplant operations in the future. Scientists also believe stem cells might be used to treat Parkinson's disease, Alzheimer's disease, heart disease, stroke, arthritis, diabetes, burns and so on.
However, stem cell research is extremely controversial. The most effective stem cells do not come from adults but from embryos created in laboratories and which are just a few days old. Many people have religious or ethical objections to growing embryos, even if they can be used to cure diseases.
【小题1】This transplant is considered the greatest medical breakthrough because _________.
A.this is the first organ transplant in the whole world |
B.the patient is in perfect health after the operation |
C.it is the first success with new stem cell technology |
D.the stem cells are from an embryo developed in a lab |
A.they are grown in the lab only |
B.they can grow into different types of cell |
C.they are designed for a specific purpose |
D.they can work in the liver not in the heart |
A.How Claudia survived in the operation |
B.How to remove the cells from the donor’s organ |
C.Why stem cells are needed in the transplant |
D.How the windpipe is transplanted |
A.Human bodies always reject transplanted organs even with their own cells |
B.The donor’s cells had to be removed because they were unhealthy |
C.The transplanted organ was refilled with the stem cells only |
D.Claudia will not have to take drugs to prevent rejection. |
A.controversial | B.confident |
C.conservative (保守的) | D.critical |
【小题1】C
【小题2】B
【小题3】D
【小题4】D
【小题5】B
解析试题分析:本文叙述的是干细胞移植的问题,在文章中作者举例说明干细胞移植的好处,在最后也提出了干细胞移植会遇见的困难。
【小题1】C 细节题。根据文章第一段1,2行Surgeons in Spain have successfully carried out the world’s first organ transplant using new stem cell technology.说明这是第一次成功的使用干细胞技术的移植。故C项正确。
【小题1】B 细节题。根据第二段最后2行But stem cells are different. They are very young, and in the laboratory scientists can grow them into different types of cell.说明这种细胞和别的细胞不一样,是因为它能长成不同种类的细胞,故B正确。
【小题1】D 段落大意题。本段是举例说明干细胞移植的一次成功的经历,通过这次经历的描述告诉我们the windpipe是怎么样被移植的。故D项正确。
【小题1】D 推理题。根据文章第4段前4行Currently, transplant patients have to take drugs for the rest of their lives to prevent their bodies rejecting the new organs. These drugs can have bad side-effects, and do not always prevent rejection. But by using Ms Castillo’s own cells, doctors were able to trick her body into thinking the new windpipe was her own organ.说明Ms Castillo不需要再服用药物,故D正确。
【小题1】B 态度意图题。从作者对干细胞移植的好处的描述可以看出他还是比较乐观的,虽然干细胞移植有点困难,但是不会阻止它的进一步发展。故B项正确。
考点:考查科普类短文阅读
点评:科普类短文最大的障碍是词汇以及考生对阅读内容的不熟悉,需要考生在阅读的时候有足够的耐心。要养成在上下文串联中猜测词义的能力,根据上下文中出现的同义词,近义词,反义词,以及词义的解释来理解生词。同时要抓住文章的中心,不要受其他信息的影响。要根据题目及选项以及文章的上下文串联合理的判断推理
The tragic death of celebrity Wang Bei has made people aware of the risks of cosmetic surgery, which is becoming increasingly popular.
A survey on the reaction to Wang’s death, conducted by Tencent, which runs China’s most popular instant-messaging service, received more than 600,000 responses, as of press time Monday.Forty-one percent of respondents expressed sorrow over her death, saying, "It’s a pity she died at such a young age." Some 31 percent said she should have been more cautious and less vain, while 10 percent were enraged at the hospital that conducted the surgery.The remaining 18 percent were indifferent.
A common thread of online discussion is why someone considered beautiful was so dissatisfied with her looks.Some netizens said Wang was a victim of society’s unrealistic ideal of beauty: double eyelids, an aquiline nose and the pointed chin typical of Western celebrities.Others said her death underscores the limits to which people will go to achieve fame and fortune.Young people, see cosmetic surgery as the key to wealth and love.
"They want to improve their appearance to find better opportunities at work and in marriage," says Ding Xiaobang, a plastic surgeon with the Peking Union Medical College Hospital."We’re living in a highly competitive society.People regard appearance as a weapon and a means of empowerment…Most of them tell me, ’I don’t care how much I spend, just make me look beautiful’." In the past decade, Ding says he Has seen a growing number of patients, like Wang Bei, who are young and naturally good-looking.The surgeon attributes this trend to people becoming richer, the standards of beauty changing, competition and frustration.
"Some are frustrated with life and use surgery as a way to try and recover," lie says.
The surge in demand for plastic surgery has resulted in a rise in the number of unauthorized business establishments and surgeons conducting such procedures.
Meanwhile, experts say, young and beautiful people who still seek plastic surgery need to address their self-awareness issues and be more accepting.
“They’ve built their identity around the admiration of others and fail to establish a system to assess themselves," says Zhu Wenbo, a psychologist with Blue Bay Psychological Consulting Center in Chengdu."People’s opinions always change, so this is not a reliable way to evaluate oneself."
【小题1】Most people are toward the death of Wang Bei according to the survey.
A.sympathetic | B.indifferent | C.enraged | D.not mentioned |
A.People become richer. |
B.The standard the beauty always changes. |
C.People suffer fierce competition and frustration now and then. |
D.All of the above. |
A.a person with single eyelid, an aquiline nose and a pointed chin |
B.a person with double eyelids, an aquiline nose and a pointed chin |
C.a person with double eyelids, a snub nose and a pointed chin |
D.a person with double eyelids, a snub nose and a chubby chin |
A.inform us that cosmetic surgery becomes popular. |
B.emphasize that young people should re-evaluate themselves rationally. |
C.raise concerns about the risk of medical cosmetology industry. |
D.state that people’s standard of beauty always changes. |
(Reuters)--- A Michigan man credited his dog with saving his life by chewing off his diseased big toe as he lay passed out in a drunken stupor(昏迷)
Jerry Douthett, 48, who woke up on a Saturday night in late July in his Rockford, Michigan home to find his Jack Russell Terrier, Kiko, had gnawed off his right big toe.
“The dog always lies with me on the bed”, said Douthett. “That night, I woke up and looked down at my foot, and it was wet. When I looked, it was blood and there was the dog looking at me with a blood moustache.”
Douthett’s wife, Rosee, rushed him to a hospital where doctors found he was suffering from Type 2 diabetes. His toe was badly infected and surgeons amputated(截)the remainder of the toe.
Douthett’s wife, a registered nurse, had been urging him for weeks to have his infected toe examined by a doctor.
On the night Kiko ate his toe, Douthett said he had been out with his wife and drank about six or seven beers and a pair of giant margaritas—big enough to put goldfish in.
“I was self-medicating at this point,” he said. “The moral of the story is that the dog saved my life, because otherwise I would never have gone to see a doctor.”
The couple said they were amazed that Kiko appeared to know Douthett had an infection that needed treatment.
“He kind of chewed off the infected part and stopped at the good bone,” said Rosee. “We joked that we shouldn’t have had to pay the co-pay because he did half the job by chewing off half of the toe.”
【小题1】What does the underlined phrase “gnawed off” probably mean?
A.bit away | B.cared for | C.sucked on | D.smelt out |
A.Douthett’s wife was a doctor | B.Douthett’s wife felt something about his disease |
C.Douthett never got that drunk | D.Douthett had seen a doctor for his disease |
A.is in top physical condition | B.was trained at an early age |
C.nearly cost Douthett his life | D.saved his master’s life |
A.It is hard for the couple to explain the dog’s behaviour |
B.Jerry Douthett went to see a doctor because of Kiko’s chewing his big toe.. |
C.The couple shouldn’t have to pay the co-pay because Kiko did half the job. |
D.Kiko didn’t hurt the good bone of its master. |