题目列表(包括答案和解析)
As I understand, if scientists produced a human clone, there would be a great risk of it having a disease. Nobody seems to understand the ageing process of a clone. It would be terrible if a baby was the age of its parent at 31 . Its cells would grow old fast and it would die young. 32 until the technique is perfectly safe, it should be 33 .
I'd love to have a clone of 34 . I often wish I had a twin sister, someone who 35 me in everything. So why not a clone? Well, the idea 36 be fun but I'm not sure if it would be 37 . I think we would be playing with fire if we let scientists go ahead with 38 cloning. There are so many 39
involved that all research in this area should be strictly controlled.
There are so many arguments 40 cloning that it is difficult to get anyone to consider the possible benefits. I am 41 that it is a technique which could be beneficial. The most obvious use would be for childless 42 . They would be able to have babies with their own genetic material. I don't see what's wrong with that.
Imagine a child 43 up knowing that his or her mother is really a sister or a brother. The emotional 44 on the child would be 45 . Or a child who was cloned from a dead brother or sister. What kind of emotional pressure would they feel, knowing they were made as a replacement for another? The whole idea
46 me!
It's all very good to ban human cloning but scientists should be allowed to 47
research. If they don't, we may 48 important benefits for our society, such as producing body organs. A clone is an 49 copy of a person with the same gene. Therefore, it is the 50 donor for an organ(器官) transplant.
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Gene technology to benefit people
Among all the fast growing science and technology, the research of human genes, or biological engineering as people call it, is drawing more and more attention now. Sometimes it is a hot topic discussed by people.
The greatest thing that gene technology can do is to cure serious diseases that doctors at present can almost do nothing with, such as cancer and heart disease. Every year, millions of people are murdered by these two killers. And to date, doctors have not found an effective way to cure them. But if the gene technology is applied, not only these two diseases can be cured completely, bringing happiness and more living days to the patients, but also the great amount of money people spend on curing their diseases can be saved, therefore it benefits the economy as well. In addition, human life span(寿命) can be prolonged.
Gene technology can help people to give birth to more healthy and clever children. Some families, with the English imperial(皇室) family being a good example, have hereditary(遗传的) diseases. This means their children will for sure have the family disease, which is a great trouble for these families. In the past, doctors could do nothing about hereditary diseases. But gene technology can solve this problem perfectly. The scientist just need to find the wrong gene and correct it and a healthy child will be born.
Some people are worrying that the gene research can be used to manufacture human beings in large quantities. In the past few years, scientists have succeeded in cloning a sheep; therefore these people predict that human babies would soon be cloned. But I believe cloned babies will not come out in large quantities, for most couples in the world can have babies in very normal way. Of course, the governments must take care to control gene technology.
【小题1】 What does "these two killers" in the second paragraph refer to?
| A．Gene technology and another treatment of the two diseases. |
| B．The two murderers who killed the cloned baby |
| C．The two diseases of cancer and heart disease |
| D．Hereditary diseases and cancer |
| A．How gene technology can be applied in the field of treating hereditary diseases. |
| B．Gene technology can be used to clone human babies. |
| C．Gene technology can help people to give birth of a baby. |
| D．Gene technology can help the English imperial family out |
| A．Using gene technology, people with hereditary diseases can have more living days. |
| B．Using gene technology, scientist finds the wrong gene and corrects it. |
| C．Using gene technology, human babies can be cloned. |
| D．Doctors can cure cancer and heart disease with the help of gene technology. |
| A．Expressing the writer’s idea that gene technology will benefit people |
| B．Telling people the advantages of gene technology |
| C．Telling the readers that gene technology will not benefit people |
| D．Explaining that gene technology will also do harm to the humanity |
Gene technology to benefit people
Among all the fast growing science and technology, the research of human genes, or biological engineering as people call it, is drawing more and more attention now. Sometimes it is a hot topic discussed by people.
The greatest thing that gene technology can do is to cure serious diseases that doctors at present can almost do nothing with, such as cancer and heart disease. Every year, millions of people are murdered by these two killers. And to date, doctors have not found an effective way to cure them. But if the gene technology is applied, not only these two diseases can be cured completely, bringing happiness and more living days to the patients, but also the great amount of money people spend on curing their diseases can be saved, therefore it benefits the economy as well. In addition, human life span(寿命) can be prolonged.
Gene technology can help people to give birth to more healthy and clever children. Some families, with the English imperial family being a good example, have hereditary(遗传的) diseases. This means their children will for sure have the family disease, which is a great trouble for these families. In the past, doctors could do nothing about hereditary diseases. But gene technology can solve this problem perfectly. The scientist just need to find the wrong gene and correct it, and a healthy child will be born.
Some people are worrying that the gene research can be used to manufacture human beings in large quantities. In the past few years, scientists have succeeded in cloning a sheep, therefore these people predict that human babies would soon be cloned. But I believe cloned babies will not come out in large quantities, for most couples in the world can have babies in very normal way. Of course, the governments must take care to control gene technology.
What does "these two killers" in the second paragraph refer to?
A. gene technology and another treatment of the two diseases.
B. The two murderers who killed the cloned baby
C. The two diseases of cancer and heart disease
D. Hereditary diseases and cancer
What's the main idea of the third paragraph?
A. How gene technology can be applied in the field of treating hereditary diseases.
B. Gene technology can be used to clone human babies.
C. Gene technology can help people to give birth of a baby.
D. Gene technology can help the English imperial family out
In what way gene technology can help to treat hereditary diseases?
A. Using gene technology, people with hereditary diseases can have more living days.
B. Using gene technology, scientist finds the wrong gene and corrects it.
C. Using gene technology, human babies can be cloned.
D. Doctors can cure cancer and heart disease with the help of gene technology.
What is the main purpose of writing this passage?
A. Expressing the writer's idea that gene technology will benefit people
B. Telling people the advantages of gene technology
C. Telling the readers that gene technology will not benefit people
D. Explaining that gene technology will also do harm to the humanity
Even if we have an extremely healthy diet and lifestyle, the human body is programmed to wear out at a maximum of about 120 years, and usually less. We all have a biological clock inside us which determines the moment when our organs cease to function properly. This is because our cells have stopped renewing themselves and our body can no longer repair itself. This is also the moment when we are more likely to begin to suffer from the diseases of old age such as arthritis and Alzheimer’s. However, rapid advances in DNA research are beginning to throw light on the secrets of the ageing process. By the end of this century we could literally have the power of life over death.
Although it has long been accepted that humans have a fixed lifespan, it is also a fact that certain other organisms, such as reptiles and amphibians, appear to live indefinitely. The only reason we do not see 500-year-old alligators is because in the wild their lives are always in danger, from man, from pollution and from other animals. When they are kept in zoos they do not seem to age at all after they are fully grown. The same is true of some species of fish, which grow indefinitely and show no signs of ageing. The existence of animals with no fixed lifespan seems to indicate that an age gene really does exist. It is this gene which scientists are searching for, which may delay or repair damage to the body caused by ageing.
Another new area of research involves the oxidation（氧化） theory, which says that ageing is caused by the same process that makes iron rust. In controlled experiments, the lifespans of certain animals were shown to be lengthened with anti-oxidants; for example, the lifespan of mice can be increased by 30%. Antioxidants are already being used in face creams and other cosmetics, and they are likely to play an important part in keeping people physically young.
Perhaps the most immediate advance we are likely to see in the battle to halt（停止）the ageing process will be organ replacement. By the year 2020 it is likely that we will be replacing injured bones or even organs like livers and kidneys with ones “grown” in laboratories. By 2050 perhaps every organ in the body, except the brain, will have become commercially available. Recent experiments also show that it may one day be possible to “grow” new organs inside our body to replace worn-out ones, something which lizards and alligators already do.
Suddenly immortality（不死，不朽） seems within reach. We can begin to imagine a future where we are born, we grow to maturity, but we never grow old and die. But do we really want to live forever?
1. When all humans reach a certain age, .
A．they suffer the effects of their diet and lifestyle
B．the organs stop to perform appropriately
C．their cells continue to renew themselves
D．they develop arthritis and Alzheimer’s
2. The purpose of showing the case of alligators is to prove .
A．alligators are in danger in the wild because of the threat from man, pollution and other animals
B．it is widely accepted that humans have a fixed lifespan
C．there exists an age gene which may control ageing
D．the age gene damages the body
3.The underlined phrase “live indefinitely” in Paragraph 2 probably mean .
A．live for a period of time without a fixed end
B．live without a clear aim
C．live in an uncertain way
D．live without being fully grown
4.It can be inferred from Paragraph 4 that .
A．by 2050 we might have most of our worn-out organs replaced with new ones commercially
B．never can the ageing process be avoided
C．livers and kidneys are sure to be grown in laboratories by the year 2020
D．lizards and alligators grow new organs inside their body to replace worn-out ones
5. What is the main topic of this passage?
A．DNA researches show how our cells renew themselves.
B．Anti-oxidants are likely to play an important part in keeping people young.
C．How our biological clock works?
D．Eternal（永恒的） youth: new developments in anti-ageing research.
6.By saying “But do we really want to live forever”, the author may probably mean .
A．a future where we are born, we grow to maturity, but we never grow old and die is on its way
B．he is uncertain whether we can live forever
C．it remains to be seen whether immortality is a blessing or a curse
D．immortality is no longer a dream
第二节： 语法填空：（共10小题；每小题1.5分，满分15分）
仔细阅读下面的短文，短文中有10个空格。请按照每小题括号内的具体要求完成语法填空和词形变化。
Among all the fast growing science and technology, the research of human genes, __31_ biological engineering as people call it, is drawing more and more attention now. Sometimes it is a hot topic __32__ (discuss) by people.
The greatest thing that gene technology can do is to cure serious diseases that doctors at present can almost do nothing with, such as cancer and heart disease. Every year, millions of people are murdered by these two __33__ (kill). And to date, doctors have not found __34_ effective way to cure them. But if the gene technology __35__ (apply) , not only these two diseases can be cured completely, __36__ (bring) happiness and more living days to the patients, but also the great amount of money people spent on curing their diseases can be saved, so __37__ benefits the economy as well. In addition, human life span(寿命) can be prolonged.
Gene technology can help people to give birth to more healthy and clever children. Some families, with the English imperial(皇室) family being a good example, have hereditary diseases. This means their children will for sure have the family disease, __38__ is a great trouble for these families. In the past, doctors could do nothing about hereditary diseases, __39__ gene technology can solve this problem __40__ (perfect). The scientist just needs to find the wrong gene and correct it, and a healthy child will be born.
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