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,         .

Even if he is not the most liked comedian in China today, his popularity certainly has risen the fastest within the last two months.
He's "Little Shenyang", who came into national fame overnight after his appearance on CCTV's Spring Festival Gala. With his funny cross-dressing, unique northeastern accent and superb imitative(模仿的) skills, Little Shenyang has obvious talent to support his rise to fame.
Hundreds of video clips of his shows have been posted on YouTube and other online video sites, and his performance fees reportedly grew 50-fold in just a few weeks. He has, at the same time, become one of the most controversial of entertainers.
Many have doubted his artistic potential, pointing out that his shows were repetitive and lacked creativity, a key to continued comedic success. Others belittle (轻视) the style of humor, saying it's too crude and appeals only to less-educated people. His defenders were just as up in arms. Many media commentators and bloggers said that his quick rise to star proved the broad appeal of his art form. He became a national champion not because of his "northeastern hick(乡巴佬)" humor, they argued, but because he represented something new on TV, something with a grassroots feel that appealed to millions of ordinary people.
Now, does Little Shenyang really deserve his star status?
【小题1】 Some people belittle Little Shenyang’s humor because _________. 

D

It was Sunday morning. All the summer world was bright and fresh, and full of life. There was cheer on every face and a spring in every step.

Tom appeared on the sidewalk with a bucket of whitewash and a long-handled brush. He stopped by the fence in front of the house where he lived with his aunt Polly. He looked at it, and all joy left him. The fence was long and high. He put the brush into the whitewash and moved it along the top of the fence. He repeated the operation. He felt he could not continue and sat down.

He knew that his friends would arrive soon with all kinds of interesting plans for the day. They would walk past him and laugh. They would make jokes about his having to work on a beautiful summer Saturday. The thought burned him like fire.

He put his hand into his pockets and took out all that he owned. Perhaps he could find some way to pay someone to do the whitewashing for him. But there was nothing of value in his pockets—nothing that could buy even half an hour of freedom. So he put the bits of toys back into his pockets and gave up the idea.

At this dark and hopeless moment, a wonderful idea came to him. It filled his mind with a great, bright light. Calmly he picked up the brush and started again to whitewash.

While Tom was working, Ben Rogers appeared. Ben was eating an apple as he walked along the street. As he walked along, he was making noises like the sound of a riverboat. First he shouted loudly, like a boat captain. Then he said “Ding-Dong-Dong”, “Ding-Dong-Dong” again and again, like the bell of a riverboat. And he made other strange noises. When he came close to Tom, he stopped.

Tom went on whitewashing. He did not look at Ben. Ben stared a moment and then said: "Hello! I’m going swimming, but you can’t go, can you?”

No answer. Tom moved his brush carefully along the fence and looked at the result with the eye of an artist. Ben came nearer. Tom's mouth watered for the apple, but he kept on working.

Ben said, "Hello, old fellow, you’ve got to work, hey?"

Tom turned suddenly and said, "Why, it's you, Ben! I wasn't noticing."

"Say — I'm going swimming. Don't you wish you could? But of course you’d rather work — wouldn't you? Of course you would."

Tom looked at the boy a bit, and said "What do you call work?"

"Why, isn't that work?"

Tom went back to his whitewashing, and answered casually,

"Well, maybe it is, and maybe it isn't. All I know is, it suits Tom Sawyer."

"Oh come, now, you don't mean to say that you like it?"

The brush continued to move.

"Like it? Well, I don't see why I shouldn’t like it. Does a boy get a chance to whitewash a fence every day?" Ben stopped eating his apple. Tom moved his brush back and forth, stepped back to look at the result, added a touch here and there, and stepped back again. Ben watched every move and got more and more interested. Soon he said,

"Say, Tom, let me whitewash a little."

Tom thought for a moment, was about to agree; but he changed his mind:

"No — no — it won’t do, Ben. You see, Aunt Polly wants this fence to be perfect. It has got to be done very carefully. I don’t think there is one boy in a thousand, maybe two thousand, that can do it well enough."

"No — is that so? Oh come, now —let me just try. Only just a little."

"Ben, I'd like to, but if it isn’t done right, I’m afraid Aunt Polly— "

"Oh, I'll be careful. Now let me try. Say -- I'll give you the core（核心）of my apple."

"Well, here — No, Ben, now don't. I'm afraid —"

"I'll give you all of it."

Tom gave up the brush with unwillingness on his face, but joy in his heart. And while Ben worked at the fence in the hot sun, Tom sat under a tree, eating the apple, and planning how to get more help. There were enough boys. Each one came to laugh, but remained to whitewash. By the time Ben was tired, Tom sold the next chance to Billy for a kite; and when Billy was tired, Johnny bought in for a dead rat — and so on, hour after hour. And when the middle of the afternoon came, Tom had won many treasures

And he had not worked. He had had a nice idle time all the time, with plenty of company -- and the fence had been whitewashed three times. If he hadn't run out of whitewash, Tom would have owned everything belonging to his friends.

He had discovered a great law of human action, namely, that in order to make a man or a boy want a thing, it is only necessary to make the thing difficult to get.

68．Tom was about to agree to let Ben whitewash when he changed his mind because ______ .

A. Tom wanted to do the whitewashing by himself

B. Tom was unwilling to let Ben do the whitewashing

C. Tom was afraid Ben would do the whitewashing better

D. Tom didn’t want to let Ben do the whitewashing before he made him give up his apple first

69．The underlined word “casually” is most similar to “______” in meaning.

A. carelessly                 B. delightedly               C. seriously                  D. angrily

70．We can learn from the passage that ______ .

A. Tom was interested in whitewashing the fence.

B. Tom had a lot of friends who are ready to help others.

C. Tom was unwilling to whitewash the fence, but he managed to let other boys do it for him

D. Tom was good at whitewashing the fence, so he looked at the result of his work with the eye of an artist.

I will not go to her birthday party ___________ I am invited.

At a meeting, a well-known speaker lifted up a bill of 20 dollars before starting his speech.

Facing 200 people, he asked, “Who wants this 20-dollar bill?” A great many hands were put up. Then he continued to say, “I intended to give it to any one of you, but allow me to do a thing before giving it to you.” Suddenly he crumpled （揉）it into a round mass. Then he asked, “Who wants it? ” Still some hands were lifted up.

He asked again, “Well, how could it be if I do it like this?” he threw the bill onto the ground, stepped on it and twisted it. As he picked it up, the bill had become not only dirty but wrinkled.

“Who still wants it?” Still a few people put up their hands.

“My dear friends, you have had a meaningful class. No matter how I treated this bill, you still want it, because it is worth 20 dollars. On your life road, you may be knocked down（击垮） or even broken into pieces by your determination or unfavorable situations. We may feel ourselves worth nothing, but, my darling, remember that whatever happens in the future, you should never lose your value（价值） in the God’s heart. You’re particular ---- never forget it.”

36．How many times did the speaker ask the people whether they wanted the bill?

A. Once             B. Twice             C. Three times         D. Four times

37． The underlined word “wrinkled” in the third paragraph probably means ________.

A. broken     B. having small lines or folds in it       C. flat      D. having holes on it

38．The speaker did this test in order to _____________.

A. tell the audience that one should never lose one’s own value

B. tell the audience that God values money most

C. test if some of the audience were extremely interested in money

D. play a trick on the audience

39． What would the speaker probably talk about next?

A. How money can make people crazy.   B. How to avoid being knocked down in one’s life.

C. How to keep one’s value of life.       D. How to give a meaningful class