Research shows that humans switch from selfish to unselfish behavior when they are watched. Do you? A picture of a set of eyes on a computer screen can cause a change in the way people act. Even images of eyes on a charity donation, collection box encourage people to be unselfish, because people put more money in a collection box that has a picture of eyes on it than they do when a flower symbol is on the box. Manfred Milinski from the Max-Planck Institute for Evolutionary Biology in Germany and Bettina Rockenbach of the University of Berlin, the authors of a new study, found that people act better when they are being watched because they feel they will be rewarded for good behavior. Their report also referred to other research showing that this response of behaving well when watched is somehow _ into humans and people respond this way unconsciously, or without realizing it. It is not just humans that act unselfishly when they are being watched. A fish called the grooming fish cleans other fish. When other fish are around, it is gentler. When no other fish are around, however, the grooming fish bites chunks from the fish it is supposed to be cleaning. The researchers suggest that the best way to get people to behave in the correct way is to make them feel watched. This could be the reason for the success of a famous American army poster. On it was a picture of an elderly man staring fiercely and pointing, it appeared, to the person who was looking at the poster. Under the picture was the caption 'I Want You' It encouraged hundreds of thousands of young American men to join the army during the Second World War to fight the Germans and Japanese. Where would the study described in the text most likely be found? A) In a newspaper. B) In a scientific journal. C) In an advertising magazine. D) In a science textbook.
B
A study has found, spending hours playing violent video games prevents teenagers from their moral growth. It is thought that regular touch to violence and lack of contact with the outside world makes it harder for them to tell right from wrong.They also struggle to trust other people,and see the world from their viewpoints. Researchers from Brock University in Ontario found that those who spend more than three hours each day in front of the screen are particularly unlikely to have developed the ability to empathize . The Canadian researchers surveyed 109 boys and girls,aged 13 and 14,about whether they played video games,which games they liked,and how long they spent playing them.Their findings found that 88 percent of teens said they played games,and more than half admitted to playing games every day.Violent games were among the most popular. The teenagers also filled in a questionnaire designed to measure their moral development.For example,they were asked how important it is to save the life of a friend. Previous studies have suggested that a person's moral judgment goes through four phases as they grow from children and enter adulthood.By the age of 13 or 14,scientists claim young people should be entering the third stage,and be able to empathize with others and take their viewpoints into account.The research found that this stage appeared to be delayed in teenagers who regularly played violent video games. It is also thought that teenagers who play games regularly did not spend enough time in the real world to learn to take others' thoughts into consideration.Researcher Mirjana Bajovic said:"The present results indicate that some teenagers, who spent three or more hours a day playing violent video games,are deprived of such opportunities." he added:"Touch to violence in video games may influence the development of moral reasoning because violence is not only presented as acceptable but is also justified and rewarded." They concluded that rather than trying to enforce an 'unrealistic' ban on the... Why did the Canadian researchers carry out the studies? A) To develop teenagers' ability to communicate. B) To enrich teenagers' awareness of social life. C) To discuss how to save the life of a friend. D) To measure teenagers' moral development.
D
Q: Indonesia's coral reefs are in trouble. Coral mining, Industrial pollution and poisonous agricultural runoff all play a role in their destruction, but the fishermen have been the worst offenders. They not only bomb fish but also poison them with cyanide, an equally destructive practice. The fishermen are also among the biggest potential victims . Two thirds of Indonesia's 7, 000 coastal villages are close to coral reefs and thus depend for their livelihood on the harvest of reef fish. The disappearing reefs are already leading to a dramatic decline in the productivity of coastal fisheries and to increasing fights among fishermen. Indonesia's reefs are vast - they cover 51, 000 square kilometers, surround 17, 500 islands and stretch 3,500 kilometers - but they are not infinite. Many foreign experts and Indonesians fear that the region's entire marine environment could be seriously damaged if the reefs keep dying at their present rate. "The overall picture is depressing," says Ian Dutton, Indonesian director of an environmental group. Depressing, but not hopeless. Despite the destruction, environmentalists have in recent years made significant progress in changing the hearts and minds of the fishermen. Working closely with local Indonesian authorities in North Sulawesi and less populated eastern Indonesia, where most of the country's reefs are located, they have succeeded in preventing destructive fishing practices and coral mining from overwhelming the reefs. Increasing numbers of fishermen are waking up to the threat and protecting the life-sustaining coral before it's too late. Nuhung, a 56-year-old fisherman, says, "I always knew blast fishing was harmful. Then I suddenly realized that by bombing the reefs I was destroying not only my own but my children's future." In the text the author_. A) presents us some facts and people's opinions as well B) shows that he's worried about the situation, but still feels a little hopeful C) says he's delighted and meanwhile, depressed D) disagrees with what's being done and gives suggestions
A: B
(Q).
The World Health Organization(WHO)planned to study the relationship between the eating habits of the people and the disease.Two doctors were chosen to make the study. They flew to Africa south of the Sahara and during the next two months visited ten countries.They found that serious diseases of poor eating, often mistaken for other diseases, existed in all parts of Africa.The diseases were similar and could therefore all be named kwashiorkor .The diseased children are usually from one to four years old.As the illness progresses, the child's stomach becomes swollen by liquid collecting in the body.The skin changes colour and may break out in open sores.The hair changes colour and starts to fall out.The patient loses all interest in his surroundings and even in food, and becomes so weak that he wants to lie down all the time.Stomach liquids are no longer produced. The doctors reasoned that kwashiorkor was found in the young children of this age in many parts of Africa because of lack of milk or meat.Their mothers gave them foods full of starches instead of greatly needed proteins.They found that the addition of milk to the food of children suffering from kwashiorkor saved many lives. From the passage we learn that kwashiorkor is a disease caused by _ . A) poor living conditions B) lack of proteins in food C) much stomach liquids D) lack of food
(A).
B