Question: Read the following article and select the best answer. Article: People turn to magic chiefly as a form of insurance--that is, they use it along with actions that actually bring results. For example, hunters may use a hunting charm . But they also use their hunting skills and knowledge of animals. The charm may give hunters the extra confidence they need to hunt even more successfully than they would without it. If they shoot a lot of game , they credit the charm for their success. Many events happen naturally without magic. Crops grow without it, and sick people get well without it.But if people use magic to bring a good harvest or to cure a patient, they may believe the magic was responsible. People also tend to forget magic's failures and to be impressed by its surface successes. They may consider magic successful if it appears to work only 10 percent of the time. Even when magic fails, people often explain the failure without doubting the power of the magic. They may say that the magician made a mistake in reciting the spell or that another magician cast a more powerful spell against the magician. Many anthropologists believe that people have faith in magic because they feel a need to believe in it. People may turn to magic to reduce their fear and uncertainty if they feel they have no control over the outcome of a situation. For example, farmers use knowledge and skill when they plant their fields. But they know that weather, insects, or diseases might ruin the crops. So farmers in some societies may also plant a charm or perform a magic rite to ensure a good harvest. Question: People believe in magic because _ . - magic powers are greater than natural powers - magic can turn dreams into reality - they are not sure of themselves - magic can bring good results
Answer: they are not sure of themselves

Question: Read the following article and select the best answer. Article: Recently a group of children in America poured some gasoline on a sleeping man and set him on fire. When caught, the children said they had done what they'd seen on TV. The incidents make people angry who believe that American children are harmed by watching too much TV. They claim children can't tell between the fiction of TV and reality, and TV distracts them from learning and makes them violent. To estimate the impact of TV on young people, "Life" magazine hires a company to interview hundreds of school children in Nora Springs, Iowa and in Dallas, Texas. Although the two cities are very different, the company finds children in each city watch the same TV shows. Many Iowa children, who watch an average of three hours of TV a day, recognizing that life on TV is rosier than what they experience. Their favourite shows are situation comedies about American families in trouble. Many boys like violent shows about police detectives or heroes, girls particularly soap operas-stories about families and friends. On the whole, children find real violence on news programs hard to take. "If you see a bus crash on the news, it's frightening," one fifth grader says. By and large, the Iowa children agree that the best thing about TV is it makes you laugh. Children in Dallas are savvier about programs of drug use on TV. "They don't really show them doing it right. On TV they are not real." A fifth grader says. "Life" agrees with a 1988 study by the U. S Department of education that finds children are none the worse for watching TV. The study finds TV doesn't have lasting effect on children. On the contrary, kids show good judgment about what they watch. "There are very few good shows on TV anymore," a 10-year-old boy says. While the debate about TV is so heated, the "Life" survey gives hope that American kids aren't wasting three or four hours a day (what is worse, by the time young people enter college today, they will have devoted more time to watching television than they will spend in college). However, a child watching... Question: The main idea of the passage is _ . - children who watch more TV are smarter than those who watch only one hour a day - children learn about drugs from watching TV - watching too much TV can cause children to go out and kill people - children learn from TV and can tell reality from what they see on it
Answer: children learn from TV and can tell reality from what they see on it

Question: Read the following article and select the best answer. Article: For grown-ups,an afternoon snooze is often easier said than done.But many of us have probably experienced just how simple it can be to catch some sleep in a gently rocking hammock .By examining brain waves in sleeping adults,researchers reported in the June 21issue of Current Biology,a Cell Press publication,that they now have evidence to explain why that is. "It is a common belief that rocking causes sleep:we fall asleep in a rocking chair soon and,since ancient times,we cradle our babies to sleep,"said Sophie Schwartz of the University of Geneva."Yet,how this works had remained a mystery.The goal of our study was made up of two parts:to test whether rocking does indeed improve sleep,and to understand how this might work at the brain level." Schwartz,Michel Muhlethaler,and their colleagues Laurence Bayer and Irina Constantinescu asked twelve adult volunteers to nap on a custom-made bed or"experimental hammock"that could either remain still or rock gently.All participants were good sleepers who didn't typically nap and did not suffer from excessive sleepiness during the day.Each participant took two 45-minute afternoon naps,one with the bed still and one with the bed in motion,while their brain activity was monitored. "We observed a faster transition to sleep in each and every subject in the swinging condition,"Muhlethaler said."Surprisingly,we also observed a dramatic boosting of certain types of sleep-related brain waves." More specifically,rocking increased the length of stage N2sleep,a form of non-rapid eye movement sleep that normally occupies about half of a good night's sleep.The rocking bed also had a lasting effect on brain activity,increasing slow brain waves and bursts of activity known as sleep spindles . Schwartz and Muhlethaler say the next step is to find out whether rocking can improve longer periods of sleep and to find out whether it may be useful for the treatment of sleep disorders,such as insomnia . Question: What do Schwartz and Muhlethaler expect to figure out in the next research? - Whether swing can extend sleep time. - Whether swing can cause insomnia. - Whether swing can change brain waves. - Whether swing can benefit memory consolidation.
Answer:
Whether swing can extend sleep time.