Read the following article and select the best answer. Article: More than 6000 children were expelled from US schools last year for bringing guns and bombs to school, the US Department of Education said on May 8. The department gave a report on the expulsions as saying handguns accounted for 58 percent of the 6093 expulsions in 2005--2006, against 7 percent for rifles or shotguns and 35 percent for other types of firearms. "the report is a dear sign that our nation's public schools are cracking down" on students who bring guns to school, " Education Secretary Richard Riey said in a statement. "We need to be tough-minded about keeping guns out of our schools and do everything to keep our children safe." In March 2006, a 1l-year-old boy and a 13-year-old boy using handguns and rifles shot dead four children and a teacher at a school in Jonesboro, Arkansas. In October, two were killed and seven wounded in a shooting at a Mississippi school. Two months later, a 14-year-old boy killed three high school students and wounded five in Daducab, Kentucky. "Most of the expulsions, 56 percent were from high schools, which have students from about age 13, 34 percent were from junior high schools and 9 percent were from elementary schools", the report said. Question: How many students were shot dead in 2006 in US schools? - 10 - 9 - 12 - 22
9

Read the following article and select the best answer. Article: You may have heard adults say they are uncomfortable in the morning without a cup of coffee. One reason they may feel that way is that coffee contains caffeine . Caffeine occurs naturally in coffee, tea, and cocoa beans, which are used to make chocolate. But now food makers are adding it to many products, from potato chips to water. The US government is especially worried about the problem. That's why the Food and Drug Administration (FDA) is studying the health effects of caffeine on young people. Studies show that too much caffeine can make people nervous and unable to sleep. What's more, caffeine is habit-forming. Those who consume it regularly and stop suddenly may experience headaches and feel tired. One of the biggest concerns is the large amount of caffeine added to so-called energy drinks, like Red Bull. A 12-ounce can of cola has about 35 milligrams of caffeine. A similar serving of Red Bull contains more than three times that amount. The Institute of Medicine is also working on caffeine-safety measures. "Teenagers should not drink beverages that contain caffeine. They should be aware of caffeine's effects on health and on how the brain works. Take, for example, teenagers who consume caffeine to stay awake and study for a test. They will remember less of what they just studied," said Stallings, a member of the institute. Companies that make products with added caffeine claim they do not advertise them to kids. However, there is no law to stop children from buying them. So the FDA needs to set limits on caffeine, especially in energy drinks. As for added caffeine in foods, the government should just say no. If not, the amount of caffeine should be printed on food labels to remind consumers. The government must do that. Doctors say kids should avoid caffeine. If you need extra energy, try these natural boosters: eat right, exercise, and get plenty of sleep. Question: The author may agree that _ . - getting enough sleep can make people energetic - headaches and feeling tired are common in teenagers - food makers don't add much caffeine to many products now - caffeine is good and useful for teenagers' study
getting enough sleep can make people energetic

Q: Read the following article and select the best answer. Article: Bill Gates and the president of General Motors have met for lunch, and Bill is going on and on about computer technology. "If automotive technology had kept pace with computer technology over the past few decades, you would now be driving a V-32 instead of a V-8, and it would have a top speed of 10,000 miles per hour," says Gates. "Or you could have an economy car that weighs 30 pounds and gets a thousand miles to a gallon of gas. In either case, the sticker price of a new car would be less than $ 50. Why haven't you guys kept up?" The president of GM smiles and says, "Because the federal government won't let us build cars that crash four times a day." Why is that funny (or not funny, as the ease may be)? Human beings love to laugh, and the average adult laughs 17 times a day. Humans love to laugh so much that there are actually industries built around laughter. Jokes, siteoms and comedies are all designed to get us laughing, because laughing feels good. For us it seems so natural, but the funny thing is that humans are the only species that laughs. Laughter is actually a complex response that involves many of the same skills used in solving problems. Laughter is a great thing--that's why we've all heard the saying, "Laughter is the best medicine." There is strong evidence that laughter can actually improve health and help fight disease. When we look at laughter--what it is, what happens in our brains when we laugh, what makes us laugh and how it can make us healthier and happier, there's a huge amount about it that no one understands yet. Question: Which of the following is true according to the passage? - Humans laugh because of jokes, sitcoms and comedies. - Humans laugh because it can fight disease. - Humans have gained skills to laugh since they are born. - Laughter is a complex response of humans.
A: Laughter is a complex response of humans.

(Q).
Read the following article and select the best answer. Article: Advice to "sleep on it" could be well founded, scientists say. After a good night's sleep a problem that couldn't be solved the night before can often appear more manageable. Researchers at the University of Luebek in Germany have designed an experiment that shows a good night's sleep can improve insight and problem-solving ability. "If you have some newly-got memories in your brain, sleep acts on these memories and restructures them, so that after sleep the insight increases," said Dr Jan Born, a neuroscientist, at the University. To test the discovery, they taught volunteers two simple rules to help them turn a string of numbers into a new order. There was also a third, hidden rule, which could help them increase their speed in solving the problem. The researchers divided the volunteers into two groups: half were allowed to sleep after the training while the rest were forced to stay awake. Dr Jan Born and his team noticed that the group that had slept after the training were twice as likely to figure out the third rule as the other group. "Sleep helped," Born said in a telephone interview . The important thing is that you have to have a memory description of the problem you want to solve in your brain and then you sleep, so it can act on the problem." But Born admitted that he and his team don't know how restructuring of memories occurs or what controls it. Pierre Maquet and Perrine Ruby of the University of Liege in Belgium said the experimental evidence supports the suggestion that sleep can help develop creative thinking. Although the role of sleep in human creativity will still be a mystery, the research gives people good reasons to fully respect their periods of sleep, they added. Question: What is the purpose of the experiment? - To test problem-solving ability in sleep. - To discover people's insight during sleep. - To prove a good sleep helps solve problems. - To discuss how to improve sleeping quality.
(A).
To prove a good sleep helps solve problems.