Fish have different personalities which change as they experience life’s highs and lows.according to British biologists.
Researchers identified different“personalities” in their fish by observing the boldness or shyness of individuals,according to The Nature.Like people,some fish are very confident in the face of novelty(新奇事物)or conflict;while others are silent and fear.
The scientists selected particularly bold and shy rainbow trout,and tested whether they changed their outlook depending on what life threw at them.They arranged some fish to fight and others to watch to see how both the participants and observers responded to victories and defeats.Winning or losing a fight,or even watching fellow fish overcome the difficulties influenced the future behavior of the creatures studied in the lab.
The researchers made fish compete with much larger or smaller opponents.to ensure that they would win or lose their fights.These bold fish that won their fights tended to be even bolder when later presented with a novel food item;losing their fight caused them to be much more cautious.
Fish also learn by watching others.Bold fish watching a shy fish exploring a mystery object were much more nervous when later given a novelty item for themselves.
Predictably,shy fish that won a fight also gained more confidence,but surprisingly,shy fish that lost their fights also grew bolder when exploring strange new food,Sneddon said,adding that this could be due to what she calls a“desperado effect”(亡命徒效应).
The new research suggests that animals can gradually adapt their personalities.The results echo the effects that life experience can have on human.What does.the underlined word“creatures’’probably refer to?
A.Fish. | B.Participants. | C.Observers. | D.Researchers. |
The third paragraph of the text is mainly about—————.
A.a conclusion of the research |
B.an explanation of fish characters |
C.a statement of the experiment |
D.a description of fish fights |
What can we know from the research?
A.Bold losing fish become—e bolder when presented With a novel food item. |
B.Losing their fights causes the bold fish to be much more courageous. |
C.Bold fish watching a shy fish exploring a mystery get less nervous. |
D.Shy fish losing fights grow more confident in exploring new food. |
What’s the main idea of the text?’
A.Fish have stress in the fierce fights. |
B.Fish care about winning or losing a fight. |
C.Fish have adaptable personalities. |
D.Fish can learn a lot by watching others. |
Drunken driving sometimes called American's socially accepted form of murder has become a national epidemic(流行病).Every hour of every day about three Americans on average are killed by drunken drivers, adding up to an incredible 250,000 over the past ten years.A drunken driver is usually referred to as one with 0.10-blood alcohol content or roughly three beers, glasses of wines or shots of whisky drunk within two hours.Heavy drinking used to be an acceptable part of the American manly image and judges were lenient in most courts, but the drunken killing has recently caused so many well-publicized tragedies, especially concerning young children, that public opinion is no longer tolerant.
Twenty states have raised the legal drinking age to 21, reversing a trend (逆转潮流) in the 1960s to reduce it to 18.After New Jersey lowered it to 18, the number of people killed by 18-20-year-old drivers more than doubled, so the state recently upped it back to 21.
Reformers, however, fear raising the drinking age will have little effect unless accompanied by educational programs to help young people to develop "responsible attitudes" about drinking and teach them to resist peer pressure to drink.
Some states are punishing bars for serving customers too many drinks.A bar in Massachusetts was fined for serving six or more double brandies to a customer who was "obviously drunk" and later drove off the land, killing a nine-year-old boy.
As the accidents continue to occur daily in every state, some Americans are even beginning to speak well of the 13 years national prohibition (禁令) of alcohol that began in 1919, which President Hoover called the "noble experiment".They forget that legal prohibition didn't stop drinking, but encouraged political corruption (腐败) and organized crime.As with the booming drug trade generally, there is no easy solution.It can be inferred from the passage that drunken driving has become a major problem in the United States because___.
A.most Americans like drinking |
B.heavy dinking is hard to avoid |
C.Americans are not shocked by traffic accidents |
D.many Americans are killed by traffic accidents |
Wha
t can be inferred from the fact of the traffic accidents in New Jersey?
A.Drivers should not be allowed to drink. |
B.Young drivers were usually bad. |
C.The legal drinking age should be raised. |
D.Some drivers didn't reach the legal drinking age. |
The underlined word "lenient" in the first paragraph means___.
A.cruel | B.serious | C.determined | D.merciful |
Which of the following best shows the writer's opinion of drunken driving?
A.It may cause organized crime. |
B.The new laws can stop heavy drinking. |
C.There should be no bars to serve drinks. |
D.It is difficult to solve the problem. |
nickname is a shortened form of a person's name. A nickname also can be a descriptive name for a person, place or thing. Many American cities have nicknames. These can help establish an identity, spread pride among citizens and build unity.
A few years ago, some marketing and advertising experts were asked to name the best nickname for an American city. The winner was the nation's largest city, New York. The top nickname was The Big Apple.
You might wonder how New York got this nickname. In the early nineteen seventies, the city had many problems. The number of visitors was falling. So a campaign was launched to give the city a new image. The head of the New York Conventions and Visitors Bureau decided to call the city, The Big Apple.
There are several explanations for where this name came from. Language expert Barry Popik studied the question and wrote about it on his Web site. He says John Fitz Gerald, a writer for a New York newspaper, used the name The Big Apple to mean New York in the nineteen twenties. Mister Fitz Gerald wrote about horse races. He heard the name used by men who worked at a racetrack in New Orleans, Louisiana.
Mister Fitz Gerald wrote: "The Big Apple. The dream of every lad that ever threw a leg over a thoroughbred and the goal of all horsemen. There's only one Big Apple. That's New York."
In horse racing, the expression meant "the big time," the place where large amounts of money could be won. The Big Apple became the name of a night club in the Harlem area of New York City in nineteen thirty-four. It also was the name of a popular dance and a hit song in the nineteen thirties.
But it is not the only nickname for America's largest city. Barry Popik's web site lists almost one hundred nicknames that describe New York. The best known are The Capital of the World. Empire City. Gotham. The City So Nice They Named it Twice. And, The City That Never Sleeps. You can hear about the city in the song, "New York, New York," by Frank Sinatra. Why do many American cities have nicknames?(回答词数不超过15个)
What did John Fitz Gerald write about for the New York newspaper?(回答词数不超过5个)
Besides “The Big Apple”, how many best known nicknames that describe New York are listed according to Barry Popik's web site?(回答词数不超过2个)
I don’t like my parents. They always tell me I should do this, and should not do that. It sometimes makes me angry,” said Liu Dan, a middle school student in Beijing. Do you have the same problem? Perhaps your parents had the same problem when they were your age long ago. Why does it seem that some parents are not so friendly in their children’s eyes?
One of the biggest things is when someone becomes a parent, he or she likes worrying things. They worry about everything about you from the time you were born. They do a lot for you, though something would make you angry, because they care about you and worry about you. They worry about your choice of friends, the food you eat, your work at school, how much sleep you get, etc. All these things are part of your life. They want you to grow up healthily and happily.
So how can you make things easier on yourself? It’s easier than you think. Just make sure your parents know what you’re doing. Get them to know your friends. Call them if you stay somewhere else later than usual. Say sorry to them when you make mistakes. Take responsibility for what you have done. Talk about your ideas with them. They may talk about theirs with you.
Most of all, try to think about why your parents do this or do that. They are still practicing being parents and need help you can give them. Someday, when you become a parent, they may be able to help you how to get on with your children.The writer of the passage doesn’t agree that _______.
A.parents want you to grow up healthily |
B.parents don’t want you to make some bad friends |
C.parents worry about everything about you |
D.parents want to control you |
Some of the children are angry with their parents in the passage because ________.
A.the parents think they eat too much |
B.the parents don’t like the friends that their children have made |
C.the children don’t live with their parents |
D.the children are limited by their parents |
“They are still practicing being parents.” means _______.
A.parents are not always right | B.parents should practice more |
C.parents have many mistakes | D.parents are always right |
The main idea in this passage is that _______.
A.some of the parents in China don’t love their children |
B.children and parents should understand more about each other |
C.parents should worry too much about their children |
D.children should bear everything their parents arranged |
Reduce, reuse, and recycle. This familiar environmentalist slogan tells us how to reduce the amount of rubbish that ends up in landfills and waterways. The concept is being used to deal with one possibly dangerous form of waste — electronic junk (电子垃圾), such as old computers, cell phones, and televisions. But this process for managing e-waste may be used in an unscrupulous way more often than not used, a recent report suggests.
“A lot of these materials are being sent to developing nations under the excuse of reuse — to bridge the digital divide,” said Richard Gutierrez, a policy researcher.
One of the problems is that no one proves whether these old machines work before they hit the seaways. Because of this, the report says, e-waste is a growing problem in Lagos, Nigeria, and elsewhere in the developing world. Much of the waste ends up being thrown away along rivers and roads. Often it’s picked apart by poor people, who may face dangerous exposure to poisonous chemicals in the equipment.
Businessmen also pay workers a little money to get back materials such as gold and copper. This low-tech recovery process could expose workers and the local environment to many dangerous materials used to build electronics. According to Gutierrez, this shadow economy exists because the excuse of recycling and reusing electronics gives businessmen “a green passport” to ship waste around the globe. “Developing nations must take upon some of the responsibility themselves,” Gutierrez said. But, he added, “A greater portion of this responsibility should fall on the exporting state.”
China, for example, has become a dumping place for large amounts of e-waste. The nation is beginning to take action to stop the flow of dangerous materials across its borders. The Chinese government, after many years of denial is finally beginning to take the lead. The passage mainly tells us that _______.
A.developing countries are facing serious environmental problems |
B.e-waste is sent to developing countries under the excuse of reuse |
C.developing countries are making full use of e-waste |
D.e-waste is a growing problem in developed countries |
What does the third paragraph mainly discuss?
A.A lot of e-waste is dumped in developing countries. |
B.Poor people break up e-waste to collect some valuable materials. |
C.The problem of e-waste is growing in developing countries. |
D.Old computers and TVs still work before they are sent abroad. |
The underlined word “unscrupulous” in Paragraph 1 probably means “________”.
A.immoral | B.wrong | C.proud | D.unsafe |
From what Gutierrez said we can learn that ________.
A.developing countries should be responsible for this problem |
B.exporting countries should be mainly responsible for this problem |
C.neither rich nor poor countries should be blamed for this problem |
D.poor countries should be blamed for this problem |
There is an old saying in English: "Laughter is the best medicine". Until recently, few people took the saying very seriously. Now, however, doctors have begun to investigate laughter and the effects it has on the human body. They have found evidence that laughter really can improve people's health.
Tests were carried out to study the effects of laughter on the body. People watched funny films, while doctors checked their heart rate, blood pressure, breathing and muscles. It was found that laughter has similar effects to physical exercise. It increases blood pressure, the heart rate and the rate of breathing; it also works several groups of muscles in the face, the stomach, and even the feet. If laughter exercises the body, it must be beneficial.
Other tests have shown that laughter appears to be capable of reducing the effect of pain on the body. In one experiment doctors produced pain in groups of students who listened to different radio programs. The group which tolerated the pain for the longest time was 'the group which listened to a funny program. The reason why laughter can reduce pain seems to be that it helps to produce endorphins (内啡肽) in the brain. These are natural chemicals which diminish both stress and pain.
There is also some evidence to suggest that laughter helps the body's immune(免疫的)system, that is, the system which fights infection. In an experiment, one group of students watched a funny video while another group served as the control group - in other words, a group with which to compare the first group. Doctors checked the blood of the students in both groups and found that the people in the group that watched the video had an increase in the activity of their white blood cells, that is, the cells which fight infection.
As a result of these discoveries, some doctors and psychiatrists (精神病学家) in the United States now hold laughter clinics, in which they try to improve their patients' condition by encouraging them to laugh. They have found that even if their patients do not really feel like laughing, making them smile is enough to produce beneficial effects similar to those caused by laughter. We learn from the first paragraph that laughter____________________.
A.is good for one's health |
B.is related to some illness |
C.has been investigated long since |
D.has no effect on the body |
Doctors have found that laughter_______________________.
A.keeps down blood pressure. |
B.has similar effects to physical exercise |
C.decreases the heart rate |
D.increases stress |
Which of the following statements is NOT true of laughter, according to the passage?
A.It reduces pain. |
B.It exercises the body. |
C.It improves the body's immune system. |
D.It can cure cancer. |
The writer's attitude towards laughter is__________.
A.critical |
B.doubtful |
C.positive |
D.negative |