The scientific world continues to be amazed by the speed of the development of cloning. Some scientists now suggest that the cloning of humans could occur in the near future. Despite the benefits of cloning, however, certain ethical (道德的) questions concerning the possible abuse (滥用) of cloning have been raised. At the heart of these questions is the idea of humans influencing life in a way that could harm society, either morally or in a real physical sense. Some people object to cloning because it allows scientists to "act like God" in the handling of living organisms.
The cloning of Dolly raised the debate over this practice to a whole new level. It has become obvious that the technology for cloning Dolly could also be used to clone humans. A person could choose to make two or ten or a hundred copies of himself or herself by the same techniques used with Dolly. An active debate about the morality of cloning humans arises. Some people see benefits from the practice, such as providing a way for parents to produce a new child to replace one dying of a fatal disease. Other people worry about humans taking into their own hands the future of the human race.
At the beginning of the twenty-first century, many scientists say the controversy over the ethics of cloning humans is overstressed because of the unpredictability (不可预测性) of cloning in general. While scientists have cloned animals such as sheep, mice, cows, pigs, and goats, fewer than 3 percent of all those cloning efforts have succeeded. The animal clones that have been produced often have health problems. Scientists believe the rapid reprogramming in cloning can introduce random (任意的) errors into a clone’s DNA. Those errors have altered individual genes in minor ways, and the genetic defects (缺陷) have led to the development of major medical problems. Some scientists say this should make human cloning out of the question, but others argue that cloning humans may actually be easier and safer than cloning animals. Whatever, I agree that further research in the field of cloning is needed.
Some people are against cloning of humans because they think _________.
| A．the practice takes too much time and money |
B．the cloning technology is still not mature |
C．humans control the future of the human race |
D．the population in the world will be too large |
Some scientists think the debate over ethics of cloning humans is overstressed because ____.
| A．cloning of human beings is completely impossible |
B．the result of cloning can’t be predicted in general |
C．cloning of animals is a failure |
D．there are big errors in a clone’s DNA |
We can learn from the text that _______.
| A．cloning of humans is a very controversial issue |
B．the cloning of Dolly begins to raise the debate over cloning of humans |
C．there are medical problems in cloning animals |
D．cloning humans is easier and safer than cloning animals |
The text is mainly about _______.
| A．the benefits of cloning |
B．the ethics of cloning |
C．the history of cloning |
D．the defects of cloning |
Not all think laughter is the best medicine, but it seems to help．So scientists carried on a new study of diabetes （糖尿病） patients who were given a good dose of humor for a year to prove it．
Researchers divide 20 high-risk diabetic patients into two groups．Both groups were given standard diabetes medicine．Group L viewed 30 minutes of humor of their choice, while Group C, the control group, did not．This went on for a year of treatments．
By two months into the study, the patients in the laughter group had lower level of the hormones epinephrine （肾上腺素）, considered to cause stress, which is known to be deadly．After the 12 months, HDL cholesterol rises 26 percent in Group L but only 3 percent in Group C．In another measure, C-reactive proteins, a maker of heart disease, drop 66 percent in the laughter group but only 26 percent in the control group．
“The best doctors believe that there is a physical good brought about by the positive emotion, happy laughter,” said study leader Lee Berk of Loma Linda University．And other research has found that humor makes us more hopeful．Still, more study is needed, Berk said．The research by Berk found that humor can bring about similar changes in body chemistry, which was proved in the new study．The research result will be presented this month at the meeting in the US．Research at the University of Maryland School of Medicine shows that laughter causes the inner lining of blood vessels to expand, increasing blood flow in a way thought to be healthy．
“Lifestyle choices have an important effect on health and these are choices which we and patients should pay attention to, rather than prevention and treatment,” Berk said in a statement this week．Why did the scientists carry on the new research?
| A．To find out if laughter was good to health． |
| B．To discover the best medicine to cure diabetes． |
| C．Because the number of diabetic patients is the largest in the world． |
| D．Because diabetic patients need more laughter than other patients． |
After 12 months into the study, ___________．
| A．C-reactive proteins increase 66 percent in Group C |
| B．the level of the hormones epinephrine stays the same in both groups |
| C．the level of the hormones epinephrine has dropped |
| D．C-reactive proteins reduced 66 percent in Group L |
The underlined part “HDL cholesterol” in Paragraph 3 must be _______．
| A．something bad to our health | B．something good to our health |
| C．a kind of wonderful medicine | D．a kind of dangerous disease |
In what way does laughter benefit people’s health?
| A．Blood is made thick by laughter． | B．Laughter makes blood vessels thin． |
| C．Laughter increases blood pressure． | D．Laughter makes blood flow fast． |
According to Berk, we should _________．
| A．choose lifestyles carefully | B．change our lifestyles |
| C．prevent our lifestyles in advance | D．pay less attention to the positive emotion |
For centuries, the body’s blood has been linked closely with the emotions．People who show no human emotions or feelings, are said to be cold-blooded killer．For example, the police are searching for a cold-blooded killer．He seems to kill for no reason, and no emotion, as if taking someone’s life as nothing．
Cold can affect other parts of the body．The expression “get cold feet” has nothing to do with cold or your feet．The expression means being afraid to do something you have decided to do．For example, you agree to be president of an organization．But then you learn that all the other officers have resigned, and all the work of the organization will be your responsibility．You are likely to get cold feet about being president when you understand the situation．
The expression “give someone the cold shoulder” probably comes from the physical act of turning your back toward someone, instead of speaking to him face to face．You may give a cold shoulder to a friend who has not kept a promise he made to you．Or, to someone who has lied about you to others．
A cold fish is not a fish．It is a person．But it is a person who is unfriendly, unemotional and shows no love or warmth．A cold fish does not offer much of himself to anyone．Someone who is a cold fish could be cold-hearted．Now a cold-hearted person is someone who has no sympathy．Several popular songs in recent years were about cold-hearted men or cold-hearted women who, without feelings, broke the hearts of their lovers．
Out in the cold means not getting something that everybody else got．A person might say that everybody but him got a pay raise---he was left out in the cold．And it is not a pleasant place to be．There are _________ expressions related to cold that are mentioned in the passage．
| A．3 | B．4 | C．6 | D．7 |
When you refuse to speak to a man and treat him in a distant way, you may express by “_________”．
| A．I give him the cold shoulder | B．I think he is a cold-blooded man |
| C．I think he is a cold fish | D．I’m likely to get cold feet |
If Sue shows absolutely no reaction to those awful pictures of starving children in Africa, you will say _________．
| A．she is a cold-blooded killer | B．she gets cold feet |
| C．she is a cold fish | D．she is out in the cold |
We can use the expression “__________” to describe a man who abandons or hurts his lover without mercy．
| A．cold-blooded | B．cold shoulder |
| C．cold feet | D．cold-hearted |
The topic of this passage is about _________．
| A．the relationship between cold and our body |
| B．some expressions about friendship |
| C．some expressions connected with cold |
| D．how cold weather comes into being |
When newspapers and radio describe the damage caused by a hurricane named Hazel,girls named Hazel are probably teased by their friends.To keep out of trouble,the Weather Bureau says,“Any resemblance between hurricane names and the names of particular girls is purely accidental.”
Some women became angry because hurricanes are given their names,but many other women are proud to see their names make headlines.They don’t even care that they are the names of destructive storms.Because more women seem to like it than dislike it,the Weather Bureau has decided to continue using girl’s names for hurricanes.
In some ways a hurricane is like a person.After it is born,it grows and develops,then becomes old and dies.Each hurricane has a character of its own.Each follows its own path through the world,and people remember it long after it gone.So it is natural to give hurricanes’ names,and to talk about them almost if they were alive.What happens to girls named Hazel according to the passage?
| A．They suffer from hurricanes. |
| B．The Weather Bureau look for them. |
| C．Others often make fun of them. |
| D．They can’t find boyfriend. |
The underlined word“resemblance”probably means ______.
| A．trouble | B．difference | C．sameness | D．success |
According to the passage,which is more reasonable?
| A．Some women feel unhappy because hurricanes are given their names. |
| B．A lot of women complain of the Weather Bureau. |
| C．Many women want to be known. |
| D．All the hurricanes are caused by women. |
Public opinions make the Weather Bureau ______.
| A．consider the disagreement of some women |
| B．go on naming hurricanes after women |
| C．name hurricanes after men |
| D．look for a new method to name hurricanes |
It is natural to give hurricane names because ______.
| A．they become old and die |
| B．all of them should be remembered |
| C．each hurricane has its own day to come |
| D．each hurricane has its own character |
I came to study in the United States a year ago .Yet I did not know the real American society until I was injured in a car accident because after the accident I had to see a doctor and go to court.
After the accident .my roommate called a doctor for me. I was very grateful and determined to repay him one day. But the next day, he asked me to pay him $200 for what he had done. I was astonished. He had good reason to charge me, he said. And if I wanted to collect money from the person who was responsible for my injury, I’d have to have a good lawyer. And only a good doctor can help me get a good lawyer .Now that he had helped me find a good doctor, it was only fair that I should pay him.
But every day I went to see the doctor, I had to wait about 50 minutes. He would see two or three patients at the same time, and often stop treating one so as to see another. Yet he charged me $115 each time .The final examination report consisted of ten lines, and it cost me $215.
My lawyer was all smiles the first time we met. But after that he avoided seeing me at all. He knew very well the other party was responsible for the accident, yet he hardly did anything. He simply waited to collect his money. He was so irresponsible that I decided to dismiss him. And he made me pay him $770.
Now I had to act as my own lawyer. Due to my inexperience, I told the insurance company the date I was leaving America. Knowing that, they played for time…and I left without getting a cent.
My experiences taught me two things about America: firstly, in a country like America money is everything. It is more important than friendship, honor or professional morality (道德). Secondly, foreigners are still being unfairly treated. So when we talk about America, we should see both its good and bad sides.The author’s roommate offered to help him because________.
| A．he felt sorry for the author |
| B．he thought it was a chance to make some money |
| C．he knew the doctor was a very good one |
| D．he wanted the author to have a good lawyer |
A good doctor is essential for the author to __________.
| A．be properly treated |
| B．talk with the person responsible for the accident |
| C．recover before he leaves America |
| D．eventually get the responsible party to pay for his injury |
The word“charge”in the third paragraph means_________ .
| A．be responsible | B．accuse | C．ask as a price | D．claim |
Both the doctor and the lawyer in this passage are very__________.
| A．friendly | B．selfish | C．professional | D．busy |
What conclusion can you draw from the story?
| A．Going to court is something very common in America. |
| B．One must be very careful while driving a car. |
| C．There are more bad sides in America than good sides. |
| D．Money is more important than other things in the US. |
This year some twenty-three hundred teen-agers (young people aged from 13-19)from all over the world will spend about ten months in U. S. homes. They will attend U. S. schools, meet U. S. teen-agers, and form impressions of the real America. At the same time, about thirteen hundred American teen-agers will go to other countries to learn new languages and gain a new understanding of the rest of the world.
Here is a two-way student exchange in action. Fred, nineteen, spent last year in Germany with George's family. In turn, George's son Mike spent a year in Fred's home in America.
Fred, a lively young man, knew little German when he arrived, but after two months' study, the language began to come to him. School was completely different from what he had expected --much harder. Students rose respectfully when the teacher entered the room. They took fourteen subjects instead of the six that are usual in the United States. There were almost no outside activities.
Family life, too, was different. The father's word was law, and all activities were around the family rather than the individual(个人). Fred found the food too simple at first. Also, he missed having a car.
"Back home, you pick up some friends in a car and go out and have a good time. In Germany, you walk, but you soon learn to like it."
At the same time, in America, Mike, a friendly German boy, was also forming his idea. "I suppose I should criticize American schools", he says. "It is far too easy by our level. But I have to say that I like it very much. In Germany we do nothing but study. Here we take part in many outside activities. I think that maybe your schools are better in training for citizens(公民). There ought to be some middle ground between the two. " This year _____ teen-agers will take part in the exchange programme between America and other countries.
| A．twenty three hundred | B．thirteen hundred |
| C．over three thousand | D．less than two thousand |
The whole exchange programme is mainly to _____ .
| A．help teen-agers in other countries know the real America. |
| B．send students in America to travel in Germany |
| C．let students learn something about other countries |
| D．have teen-agers learn new languages |
Fred and Mike agreed that _____ .
| A．American food tasted better than German food |
| B．German schools were harder than American schools |
| C．Americans and Germans were both friendly |
| D．There were more cars on the streets in America |
What is particular in American schools is that _____ .
| A．there is some middle ground between the two teaching buildings |
| B．there are a lot of after-school activities |
| C．students usually take fourteen subjects in all |
| D．students go outside to enjoy themselves in a car |
After experiencing the American school life, Mike thought _____ .
| A．a better education should include something good from both America and Germany |
| B．German schools trained students to be better citizens |
| C．American schools were not as good as German schools |
| D．the easy life in the American school was more helpful to students |