题目列表(包括答案和解析)
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?
【小题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 |
| 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 |
| 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 |
| 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 |
| 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. |
| 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 |
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
B
As a teenager of the digital era, it is really hard to say no to fantastic electronic gadgets(电子产品). Many of us can’t get through a day without using our mobile phones or checking our e-mails. No matter if we’re “@home”, “@school” or“@play”, living without technological toys seems more and more unthinkable.
However, although gadgets bring convenience, many of us can start to feel stressed out by them. And, a lot of electronics are fairly expensive. Fashionable gadgets come and go in the digital age in the blink of any eye. So, think twice before you pulling out your wallet.
Here are some of the most popular gadgets and their pros and cons:
Pros: Laptops have made our lives much easier. You can take your books, movies, music and homework everywhere.
Cons: They cost at least 4,000 yuan! If you only want to share photos or games with your friend, then a flash memory stick is a great cheap alternative.
Pros: As well as carrying your favourite music, a video MP3 player can play up to 150 hours of movies and TV programmes.
Cons: The price—sometimes more than 2,000 yuan—is the first concern. Secondly, though music is really important to young people, ask yourself if video is really necessary. A regular MP3 player is a lot cheaper. And remember, don’t let the loud volume damage your hearing.
Pros: New mobile phones combine traditional functions with a digital camera, MP3 player and even a radio. Some can also send and receive e-mails.
Cons: Always trying to keep up with the latest model can be a waste of money. There are always new, improved phones coming out. Don’t be a fool. Do you really need all these functions? Think twice before you buy.
60. According to the writer, which of the following statements is true?
A. Teenagers can’t live through a day without fantastic electronic gadgets.
B. Teenagers can hardly live happily without electronic gadgets.
C. Teenagers’ life is full of expensive electronic gadgets.
D. It’s all but impossible for many teenagers to live without fantastic electronic gadgets.
61. What conclusion can we draw from the passage?
A. Never buy the most updated gadgets.
B. You should buy the gadgets with as many functions as possible.
C. We needn’t always pay the most part to buy the most up-to-date gadgets with many functions.
D. Never buy the latest model, it’s much too expensive.
62. Choose the statement most similar in meaning to the underlined sentence in Paragraph2.
A. Fashionable gadgets are updated in the digital times in a flash.
B. Fashionable gadgets are transported everywhere in the digital age in the blink of any eye.
C. People keep buying and throwing away expensive fashionable gadgets in the digital age in the blink of any eye.
D. People use all kinds of fashionable gadgets all the time in the digital age.
63. What do the words “pros and cons” mean in the selection?
A. Agreements and disagreements.
B. The views that are favoured and not favoured by people.
C. Benefits and bads.
D. Advantages and disadvantages.
Although many Chinese students say that their knowledge of English grammar is good, most would admit that their spoken English is poor. Whenever I speak to a Chinese student, they always say,“My spoken English is poor.” I would like to suggest that there may be some reasons for their problems with spoken English.
First, they fail to find suitable words to express themselves due to a limited vocabulary. However, you can speak with a limited vocabulary, if you choose a positive attitude. Others will follow you as long as you use the words that you know.
Sometimes they make mistakes when they are speaking because they are shy and nervous. Yet students should remember that their goal should be FLUENCY NOT ACCURACY. Your aim in writing is to be accurate following the rules for grammar and using the right words and spelling them correctly. However, in speaking your aim is fluency. You want to get your message across, to talk to someone in English, as quickly and as well as you can, even though sometimes you may use a wrong word or tense, but it doesn't matter.
The third reason is that not enough attention is paid to listening. You have one mouth but two ears! All that hearing is necessary for you to start speaking.
Fourth, most Chinese students are reactive rather than proactive language learners. Instead of actively seeking out opportunities to improve their spoken English they passively wait for speaking opportunities to come to them and wonder why their English always remains poor.
A. The person you are speaking to will understand you and make allowances for any mistakes he hears.
B. They may try to avoid making similar mistakes next time.
C. Obviously the better answer is to expand their vocabulary.
D. If you have this proactive outlook, then you will see English opportunities wherever you go.
E. However, their spoken English does not have to remain“poor”!
F. Second, they are afraid of making mistakes.
G. The second reason lies in the reluctance of using what has just been learned.
Although many Chinese students say that their knowledge of English grammar is good, most would admit that their spoken English is poor. Whenever I speak to a Chinese student they always say, “My spoken English is poor.” However, their spoken English does not have to remain “poor”! I would like to suggest that there may be some reasons for their problems with spoken English.
First, they fail to find suitable words to express themselves due to a limited vocabulary. Obviously the better answer is to expand their vocabulary. However, you can speak with a limited vocabulary, if your attitude is positive. Others will follow you as long as you use the words that you know.
Second, they are afraid of making mistakes. Sometimes they make mistakes when they are speaking because they are shy and nervous. Yet students should remember that their goal should be FLUENCY NOT ACCURACY（准确性）. Your aim in writing is to be accurate following the rules for grammar and using the right words and spelling them correctly. However, in speaking your aim is fluency. You want to get your message across, to talk to someone in English, as quickly and as well as you can, even though sometimes you may use a wrong word or tense, but it doesn’t matter because the person you are speaking to will understand you and make allowances for any mistakes he hears.
The third reason is that not enough attention is paid to listening. You have one mouth but two ears! All that hearing was necessary for you to start speaking.
Fourth, most Chinese students are reactive rather than proactive language learners. Instead of actively seeking out opportunities to improve their spoken English, they passively wait for speaking opportunities to come to them and wonder why their English always remains poor. If you have this proactive outlook, then you will see English opportunities wherever you go.
If you do not use your English beyond the classroom, you will forget what English you know. Remember: USE IT OR LOSE IT! You can learn how to speak English better by speaking English more.
What is most probably the writer’s purpose in writing the passage?
A．To improve your reading.
B．To improve your listening.
C．To improve your spoken English.
D．To improve your vocabulary.
It can be inferred from the third paragraph that______.
A．don’t be fluency , Just be accuracy
B．don’t be nervous ,don’t be shy . Just write!
C．don’t be afraid of making mistakes . Just speak!
D．don’t be shy ,don’t be fluency. Just listen and write!
The last paragraph is possibly close to the meaning of “_____”.
A．more hurry, less speed B．better late than never
C．silence is gold D．practice makes perfect
The text is most probably taken from a ______.
A．teacher’s diary B．report on study
C．sports newspaper D．movie magazine
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