1.__________

Current research into the human gene system is helping us understand why people have predispositions（易患某病倾向）to certain diseases．Knowing our genetic makeup can help us to judge whether or not we may be stricken by particular illness, such as cancer．Even before birth, we are able to do genetic screenings to determine what a child's genetic disorder will be．Scientists have already isolated and identified the genes responsible for the more than 4,000 genetic diseases that affect human beings．

2.__________

The implications of this knowledge are astonishing. In addition to predicting genetic predisposition towards diseases, gene therapies may provide new treatments or cures for serious diseases．Millions of people already use genetically engineered drugs to treat heart disease, cancer, AIDS, and strokes （中风）. But with the research that is now being conducted, we may find cures to many more diseases．In the near future, genetic experimentation will also allow parents to select the traits of their children. Genetic traits that determine height, weight, eye and hair color will be able to be controlled, and many parents are excited about this potential.

3.__________

Many people, however, are unwilling to accept the possibilities genetic research allowsFor example, one reason some women do not use the largest genetic testing for breast cancer is because they are afraid they will be discriminated against．Another problem is that many people do not want to discover their weakness．What if they learn that they have a disease for which there are no medical cures? How will such knowledge affect their lives? Do people really want to know what they will die of?

4.__________

Many people believe that history has not always shown human decision-making to be bright when it comes to ethical（道德的）choices. Jeremy Rifkin is probably the most well known opponent of genetic engineering. He believes that humans are not responsible enough to experiment with genes and should not “play God” He asks, “Just because it can be done, does that mean it should be done?” He points out that our society will eventually look and act the same if parents select the traits of their children, and he questions the desirability of such a society．

5.．__________

One of the fears expressed about genetic experimentation involves privacy. Already blood sample taken from patients in hospitals have been used for genetic research without the patients’ permission. Most people would agree that one’s health and genetic makeup are private concerns. But if insurance companies gain access to this information, it could have a large impact on insurance coverage or costs; if employers gain access to the information, it could have a large impact on hiring or promotion decisions. The possibilities for discrimination are obvious．

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.

C

       In the United States, when one becomes rich, he wants people to know it．And even if he does not become very rich, he wants people to think that he is．That is what “keeping up with the Joneses” is about．It is the story of someone who tried to look as rich as his neighbours．

       The expression was first used in 1913 by a young American called Arthur Momand．He told this story about himself．He began earning $ 125 a week at the age of 23．That was a lot of money in those days．He got married and moved with his wife to a very wealthy neighbourhood outside New York City．When he saw that rich people rode horses, Momand went horseback riding every day．When he saw that rich people had servants, Momand and his wife also hired a servant and gave big parties for their new neighbours．

       It was like a race, but one could never finish his race because one was always trying to keep up．The race ended for Momand and his wife when they could no longer pay for their new way of life．They moved back to an apartment in New York City．

       Momand looked around him and noticed that many people do things just to keep up with rich lifestyle of their neighbours．He saw the funny side of it and started to write a series of short stories．He called it “Keeping up with the Joneses” because “Jones” is a very common name in the United States．“Keeping up with the Joneses” came to mean keeping up with rich lifestyle of the people around you．Momand’s series appeared in different newspapers across the country for over 28 years．

       People never seem to get tired of keeping up with the Joneses．And there are “Joneses” in every city of the world．But one must get tired of trying to keep up with the Joneses because no matter what one does, Mr．Jones always seems to be ahead．

64．Some people want to keep up with the Joneses because they ________．

       A．want to be as rich as their neighbours

       B．want others to know or to think that they are rich

       C．don’t want others to know they are rich

       D．want to be happy

65．It can be inferred （推断） from the story that rich people like to ________．

       A．live outside New York City      B．live in New York city

       C．live in apartments                 D．have many neighbours

66．Arthur Momand used the name “Jones” in his series of short stories because “Jones” is ________．

       A．an important name               B．a popular name in the United States

       C．his neighbour’s name             D．not a good name

67．According to the writer, it is ________ to keep up with the Joneses．

       A．correct    B．interesting      C．impossible      D．Good

Everybody is happy as his pay rises. Yet pleasure at your own can disappear if you learn that a fellow worker has been given a bigger one. Indeed, if he is known as being lazy, you might even be quite cross. Such behavior is regarded as “all too human”, with the underlying belief that other animals would not be able to have this finely developed sense of sadness. But a study by Sarah Brosnan of Emory University in Atlanta, Georgia, which has just been published in Nature, suggests that it is all too monkey, as well.

The researchers studied the behaviors of some kind of female brown monkeys. They look smart. They are good-natured, co-operative creatures, and they share their food happily. Above all, like female human beings, they tend to pay much closer attention to the value of “goods and services” than males.

Such characteristics make them perfect subjects for Doctor Brosnan’s study. The researchers spent two years teaching their monkeys to exchange tokens (奖券) for food. Normally, the monkeys were happy enough to exchange pieces of rock for pieces of cucumber. However, when two monkeys were placed in separate and connected rooms, so that each other could observe what the other is getting in return for its rock, they became quite different.

In the world of monkeys，grapes are excellent goods (and much preferable to cucumbers). So when one monkey was handed a grape in exchange for her token, the second was not willing to hand hers over for a mere piece of cucumber. And if one received a grape without having to provide her token in exchange at all, the other either shook her own token at the researcher, or refused to accept the cucumber. Indeed, the mere presence of a grape in the other room (without an actual monkey to eat it) was enough to bring about dissatisfaction in a female monkey.

The researches suggest that these monkeys, like humans, are guided by social senses. In the wild, they are co-operative and group-living. Such co-operation is likely to be firm only when each animal feels it is not being cheated. Feelings of anger when unfairly treated, it seems, are not the nature of human beings alone. Refusing a smaller reward completely makes these feelings clear to other animals of the group. However, whether such a sense of fairness developed independently in monkeys and humans, or whether it comes from the common roots that they had 35 million years ago, is, as yet, an unanswered question. w.w.^w..c.#o@m

66. According to the passage, which of the following statements is TRUE?

A. Only monkeys and humans can have the sense of fairness in the world.

B. Women will show more dissatisfaction than men when unfairly treated.

C. In the wild, monkeys are never unhappy to share their food with each other.

D. Monkeys can exchange cucumbers for grapes, for grapes are more attractive.

67. The underlined statement “it is all too monkey” means that ________.

A. monkeys are also angry with lazy fellows

B. feeling angry at unfairness is also monkey’s nature

C. monkeys, like humans, tend to be envious of each other

D. no animals other than monkeys can develop such feelings

68. Female monkeys of this kind are chosen for the research most probably because they are ____.

A. more likely to pay attention to the value of what they get    

B. attentive to researchers’ instructions

C. nice in both appearance and behaviors

D. more ready to help others than their male companions

69． Which of the following conclusions is TRUE according to the passage?

A. Human beings' feelings of anger are developed from the monkeys.

B. In the research, male monkeys are less likely to exchange food with others.

C. Co-operation between monkeys stays firm before the realization of being cheated.

D. Only monkeys and humans have the sense of fairness dating back to 35 million years ago.

70. What can we infer about the monkeys in Sarah’s study?

A. The monkeys can be trained to develop social senses.

B. They usually show their feelings openly as humans do.

C. The monkeys may show their satisfaction with equal treatment.

D. Co-operation among the monkeys remains effective in the wild.