What will people die of 100 years from now? If you think that is a simple question, you have not been paying attention to the revolution that is taking place in bio-technology. With the help of new medicine, the human body will last a very long time, Death will come mainly from accidents murder and war. Today’s leading killers, such as heart disease, cancer, and aging itself, will become distant memories.
In discussion of technological changes, the Internet gets most of the attention these days. But the change in medicine can be the real technological event of our times. How long can humans live？Human brains were known to decide the final death. Cells are the basic units of all living things, and until recently, scientists were sure that the life of cells could not go much beyond 120 years because the basic materials of cells, such as those of brain cells, would not last forever. But the upper limits will be broken by new medicine. Sometime between 2050 and 2100, medicine will have advanced to the point at which every 10 years or so, people will be able to take medicine to repair their organs. The medicine, made up of the basic building materials of life, will build new brain cells, heart cells, and so on --- in much the same way our bodies make new skin cells to take the place of old ones.
It is exciting to imagine that the advance in technology may be changing the most basic condition of human existence, but many technical problems still must be cleared up on the way to this wonderful future.
45. According to the passage, human death is now mainly caused by________.
A. diseases and aging B. accidents and war
C. accidents and aging D. heart disease and war
46. In the author’s opinion, today’s most important advance in technology lies in________.
A. medicine B. the Internet C. brain cells D. human organs
47. Humans may live longer in the future because________.
A. heart disease will be far away from us
B. human brains can decide the final death
C. the basic materials of cells will last forever
D. human organs can be repaired by new medicine
48. What is the best title of the passage?.
A. Bio-technology
B. The Human Body Will Last a Very Long Time
C. New Medicine
D. The Advance in Technology
It’s true that quite a few most respected scientific authorities have confirmed that the world is becoming hotter and hotter. There’s also strong evidence that humans are contributing to the warming. Countless recent reports have proved the same thing. For instance, a 2010 summary about the climate science by the Royal Society noted that: “The global warming over the last half-century has been caused mainly by human activity.”
You may not believe that humans could change the planet’s climate, but the basic science is well understood. Each year, billions of tons of greenhouse gases are released into the atmosphere because of human activity. As has been known for years, these gases hold heat that would otherwise escape to space, wrapping the planet in an invisible (看不见的) blanket.
Of course, the earth’s climate has always been changing due to “natural” factors such as volcanic eruption or changes in solar, or cycles concerning the Earth’s going around the sun. According to the scientific research, however, the warming observed by now matches the pattern of warming we would expect from a build-up of greenhouse gas in the atmosphere – not the warming we would expect from other possible causes.
Even if scientists did discover another reasonable explanation for the warming recorded so far, that would give birth to a difficult question. As Robert Henson puts it: “If some newly discovered factor is to blame for the climate change, then why aren’t carbon dioxide and the other greenhouse gases producing the warming that basic physics tells us they should be?”
The only way to prove with 100% certainty that humans are responsible for global warming would be to run an experiment with two identical Earths – one with human influence and one without. That obviously isn’t possible, and so most scientists are careful not to state human influence as an absolute certainty. In most scientists’ opinion, the global warming is mainly caused by ________.
| A．solar activity | B．volcanic activity |
| C．natural factors | D．human factors |
The text is developed by ________.
| A．giving typical examples |
| B．following the order of space |
| C．analyzing a theory and arguing it |
| D．comparing and finding differences |
The underline word “identical” in the last paragraph probably means ________.
| A．totally different | B．exactly the same |
| C．extremely important | D．partly independent |
Which of the following is not the cause of climate change?
| A．volcanic eruption |
| B．cycles concerning the Earth’s going around the sun |
| C．changes in solar |
| D．floods and droughts |
Which of the following can be the best title?
| A．Are All the Scientists Really Scientific? |
| B．Where Is Global Warming Leading Us to? |
| C．Are Humans Definitely Causing Global Warming? |
| D．What’s the Relation of Global Warming and Greenhouse Gases? |
We have proof that you become what you eat. When you know the effects of different types of food, you can use your knowledge well and eat what you want to become.
Food has an impact on our physical and mental health. Have you ever heard any of the following advice?
Lettuce (莴苣) or milk can make you sleepy.
To stop feeling sleepy you should eat peanuts or dried fish.
Everyone has their own advice to give, which they have read about or have been told by older relatives. Some of these pieces of advice seem to contradict each other.
Eating chocolate makes you fat and gives you spots.
Chocolate contains the essential minerals: iron and magnesium (镁).
What we need to figure out is what type of chocolate to eat to get the benefits and how much of it to eat. We can do this by reading the list of ingredients (原料) on the chocolate bar package. Exactly how much real chocolate is in there? And how much of that do we need to eat to get the benefits of the minerals it contains?
Future restaurants might be named after the physical or mental state they hope to create. Their menus will list the benefits of each dish and drink. Some restaurants have already started this concept, and list the nutritional (营养的) content of their dishes on the menus.
Let’s take the restaurant “Winners” as an example. Their menu would list dishes specifically designed to help you win sports competitions. Or you could choose the Go-faster salad, which is a large bowl of mixed raw vegetables in a light salad dressing, giving you energy without making you gain weight. And what kind of dishes do you think would be on the menu at the “Clever Café”?
So what’s going to happen to hamburgers and biscuits? Will the concept of eating food, because it’s tasty, go out of fashion? Of course not! Junk food is also changing. If ice-cream is not good for children, can’t we give them fat-free, sugar-free tofu ice-cream? Unhealthy food is going out of fashion, so brands are changing. We are told not to drink cola because of the sugar and caffeine content so cola companies are making sugar-free and caffeine-free drinks. We are told dried fruit is a healthier snack than biscuits so some biscuit companies are making biscuits with added vitamins.By saying “you become what you eat”, the writer means that ________.
| A．you will become your own food |
| B．you will know what food is good by its appearance |
| C．food has an effect on your health |
| D．you will know the effects of different types of food |
What does the underlined word “contradict” mean in the text?
| A．Oppose to | B．Help with |
| C．Have influence on | D．Benefit from |
How can we eat chocolate properly, according to the passage?
| A．To eat chocolate containing the essential minerals. |
| B．To read the list of ingredients on the package. |
| C．To get advice from others before eating real chocolate. |
| D．To learn how much chocolate we can consume before eating. |
Which is true about the future restaurants?
| A．The food in “Winners” can ensure you to win sports competitions. |
| B．They might list the nutritional content of their dishes on the menus. |
| C．Hamburgers will disappear in these restaurants. |
| D．The Go-faster salad helps you go faster. |
The concept of eating tasty food will not go out of fashion because ________.
| A．the junk food companies are changing their brand names |
| B．biscuit companies are making dried fruit |
| C．junk food will become healthier than before |
| D．Cola companies are still making cola |
When I was learning calligraphy my teacher told me a story.
A calligrapher taught handwriting. One of his students who often practised handwriting with old sheets of newspapers complained that he made very little progress though he had learned it with the calligrapher for a long time. His teacher said to him, “Try to use the best paper. Maybe you’ll write better. ”
The student did as he was told. It really worked. He made headway not long afterwards and felt curious. He asked his teacher about the reason. The calligrapher answered, “When you used old newspapers to practice handwriting，you would think you were writing a draft（草稿）. It didn’t matter if you wrote badly as old newspapers were plenty in supply. In that case you wouldn’t pay much attention to it. Now you use the best paper you’ll treasure it. Each time you write you feel strongly about the rarity (稀少) of chances and you’ll devote to it with all your heart and soul; you’ll do the handwriting much more attentively than otherwise practising it. Of course you’ve made rapid progress.”
Indeed，we spend our ordinary days just as they are worthless “old newspapers”. We don’t care if we scrawl and waste them, thinking that they will come endlessly --- those “old newspapers” are inexhaustible. In such a mood we may each day pass by opportunities but fail to catch any of them.
Life is not a military exercise but an actual war in which real weapons are used. In everyday life there’s no chance for us to draw a draft. That’s because what we call “draft” actually is the answer sheet we write that cannot be changed. Every day of our life is something new. Let us take every day as a sheet of best paper.The calligrapher in the story told the student to write on the best paper because he thought _______.
| A．the student would practice more carefully on the best paper |
| B．it was comfortable to write on the bet paper |
| C．the student had enough money to buy the best paper. |
| D．the student could write more on the best paper. |
The student didn’t make much progress at first because _________.
| A．he regarded his writing on old newspaper just as a draft |
| B．he was too poor to buy better paper to write |
| C．he didn’t follow his teacher’s advice |
| D．he was not used to the calligrapher’s teaching manner |
We learn from the passage that _________.
| A．the student finally gave up |
| B．the student made rapid progress by persisting more carefully |
| C．the calligrapher was strict with his students |
| D．old newspaper is not useful |
Which of the following is true according to the passage?
| A．What teachers say is always true. |
| B．Success calls for attentiveness. |
| C．Handwriting is easy to practice. |
| D．New things are always better than old ones. |
The writer wants to tell us that _________.
| A．there are some good ways to practice handwriting |
| B．life is like old newspaper |
| C．we should learn from the student in the story |
| D．life will not give us a chance to draw a draft |
Childhood is a time （1）_____ there are few responsibilities to make life difficult. If a child has good parents, he is fed, looked after and loved, whatever he may do. (2)_____ is impossible that he will ever again in his life (3)________(give) so much without having to do anything in return. But a child hashis pains; he is not so free to do (4) _____he wishes to; he is continually being told not to do something, or being punished (5)_____ what he has done wrong.
When the child has become a young man and this young man starts to earn his own living, he can no longer expect others to pay for his food, his clothes, and his room, but has to work on his own if he wants to live (6)________ (comfort). If he spends most of his time (7) ________(play) about in the way that he used to as a child, he will go (8)________ (hunger). If, however, he works hard, (9)________(keep) out of trouble and has good health, he can have the great happiness of building up for himself his own position in (10)________ (social).
Published in 1896 and one of the most memorable horror stories ever written, Dracula, by Irish writer Bram Stoker,is the story of a vampire（吸血鬼）,someone who lives on human blood. Stoker wrote the book after reading stories about Central European vampires and set his novel in Transylvania. Even today,there are readers of the book who believe that Transylvania is a mythical（神话的）country,a figment（虚构）of Stoker’s imagination. Nothing could be further from the truth. Transylvania is part of modern-day Central European country Romania,and the country does indeed have a history of mythological vampires.
However,Romanians are always puzzled by the description of the novel’s central character, Count Dracula,a tall,elegant aristocrat（贵族）with impeccable（完美的）manners who also happens to speak very good English. This is a world away from the images of vampires that they have grown up with. Romanian vampires are half-human creatures who live solitary lives in the forests,not aristocrats living in castles with well-stocked libraries.
So where did Stoke get the image for his Dracula? The answer becomes clearer when one learns of his relationship with a man called Henry Irving,the greatest British stage actor of his time.
Stoker was working as a civil servant in his home city of Dublin when he first met Irving. Bored with his tedious life and work, Stoker took every opportunity to visit the theatre and for a while was the drama critic for the Dublin Evening Mail. One of the reviews he wrote was of a performance of Shakespeare’s play Hamlet,with Irving in the lead role.
Irving was so pleased with Stoker’s review of his performance that he asked to meet him. Stoker couldn’t believe his luck when one night,he was invited to a dinner party where Irving was the guest of honour. Irving entertained the assembled dinner guests with some renditions（表演）of famous poems and speeches from Shakespeare.
Stoker was already writing the first chapters of Dracula and began to base the central character on Irving,in the vain hope that if it ever became a stage play, Irving would play the central character. Sadly,Irving never did,but the two men became close friends,and in 1878 Stoker left the civil service and became Irving’s manager in London.Bram Stoker set his novel in Transylvania because .
| A．it is in modern-day Romania |
| B．Transylvania is a mythical country |
| C．he wanted to tell a true story |
| D．he had read stories about vampires from the area |
The central character of the novel .
| A．is very similar to the vampires that Romanians know about |
| B．Is completely different from the vampires Romanians know about |
| C．Has impeccable manners,like a real Romanian vampire |
| D．Is puzzled by the comparison with Romanian vampires |
What was Stoker’s hope?
| A．That the book would become a stage-play. |
| B．That Irving would play the central character in the stage play. |
| C．That he could live in London. |
| D．That Irving would work for him. |
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