Read the following article and select the best answer. Article: Blue-eyed people have been living in Europe for at least 7,000 years, scientists have discovered. A man who lived on the Iberian Peninsula before Europeans became farmers probably had blue eyes but dark hair and skin,  according to scientists who have sequenced   his DNA. This surprising combination of eye, hair and skin color1ing may not have been unusual during his lifetime, but it is no longer seen among modern Europeans, reported by the journal Nature. The man, a Neolithic hunter-gatherer known to scientists as La BranaI, is of great interest to scientists because he offers a snapshot  of what was in Europeans' DNA before agriculture spread through the continent. Experts have theorized that certain genetic feature spread quickly among humans after they adopted the farming lifestyle. La BranaI shows that at least some of their predictions were correct. The man's skeleton, along with that of a male companion, was discovered in 2006 in a cave in what is now northeastern Spain. The site, known as La Brana-Arintero, sits about 5,000 feet above sea level, and the cave provided a cold, refrigerator-like environment that preserved his DNA. In the lab, scientists were able to remove enough DNA from a single tooth to reconstruct La BranaI's entire genome  .  They compared it to the DNA of other ancient Europeans (including Otzi, the 5, 300-year-old mummy found in an Alpine glacier) and determined that he was a closer match with hunter-gatherers than with farmers. When it came to genes that would influence La BranaI's appearance, the researchers found that their 7,OOO-year-old subject had versions of two skin pigment  genes that are either very rare or nonexistent among Europeans today. Then they looked at other places in the genome that influence pigmentation  and found a mix of ancient and modern gene variants . Taken together, La BranaI's DNA "is likely to have resulted in dark skin pigmentation and dark or brown hair," they wrote. However, his DNA indicates that his eyes were most likely blue, the scientists... Question: Which of the following is TRUE? - La BranaI's gene variants spread together. - La BranaI's DNA influences his appearance. - La BranaI's appearance influences contemporary Europeans. - La BranaI's gene is completely different from the contemporary Europeans'.
La BranaI's DNA influences his appearance.
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Read the following article and select the best answer. Article: I felt encouraged by his words and began to swim more calmly.But my clothes stuck to me like a heavy weight.I could hardly stay above the surface. Counsel saw this."Shall I cut them?"he asked. With a knife he cut my clothes from top to bottom and took them of quickly while I swam for both of us. Then I did the same for Counsel,and we continued to swim near each other. But we were in serious trouble.The crew might not have noticed our disappearance. And if they had,they could not return because the rudder had broken.Counsel thought of all this,and calmly made his plans.We decided to wait for the ship as long as possible,because we had no other hope of safety.I suggested that we save our strength so that both of us would not be tired out at the same time.This was how we did it:While one of us lay on his back,quite _ ,with arms crossed and legs stretched out ,the other would swim and push him along.We changed every ten minutes or so.In this way we could swim for hours,perhaps till daylight.The crash of the ship and the whale had appeared at about eleven o'clock.We had about eight hours to swim before daylight.This seemed possible,if the sea remained calm. Question: What happened to the man who told the story? - He and his companion got into the water to test their strength. - He jumped into the water to save the broken rudder. - He was knocked into the water by his enemy. - He was thrown into the sea when the ship struck a whale.
He was thrown into the sea when the ship struck a whale.
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Read the following article and select the best answer. Article: Most people looking for ways to quit smoking worry about weight gain, and with good reason. Smokers who quit tend to pack on an average of 5 pounds after they stop smoking cigarettes. A new study, published by the journal Science, explains why this happens.               The new research explains that nicotine appears to combine with appetite-regulating neurons   in the brain, besides the receptors    that bring about addiction. These neurons help regulate how much food gets consumed, but under the influence of nicotine, they lose their self-control. This is why when smokers quit, they tend to eat more and gain weight.               The researchers believe that their discovery will lead to the development of drugs that aim at nicotine receptors on brain cells that control appetite. In the future, weight gain may no longer be a reason for smokers to delay the decision to kick the habit, but that's no reason to wait. Nicotine-replacement treatment, while not for everyone, can help. Here are a few more ways to quit smoking and stay slim.               Drink water. To improve metabolic   rates, make half of those glasses ice water. Juice can be too high in calories, something you'll want to keep an eye on your journey toward being a slimmer non-smoker. Plan your snacks. Healthy snacks help keep your metabolism working, so you continue to burn calories while stopping wild hunger pain, or fake hunger.                Keep moving. Exercise kills two birds with one stone. It helps you burn calories and prevents you from eating when you're not truly hungry. It's also a feel-good stress reliever  . Focus on your fitness and how being healthy makes you feel. Make exercise a goal and think of quitting as your reward for being physically fit. Question: The author believes that   _  . - ice water can improve metabolic rates - smokers should eat fewer snacks to keep slim - stress can lead to fake hunger - exercise can help one eat less
ice water can improve metabolic rates
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Read the following article and select the best answer. Article: When parents talk about school safety these days, they're usually referring to the increase in violence at schools. But research shows that school-age children are actually nine times more likely to suffer an injury while doing sports than to be the victim of violence while at school. Accidents can be prevented if parents are on the lookout for potential dangers. To help you keep your kids free from harm, here are some safety tips: a. Teach your child never to talk to strangers or accept rides or gifts from strangers. Remember, a stranger is anyone you or your child doesn't know well or trust. b. Be sure that your child walks to and from school with a _ , friend or neighbor. c. Teach your kid, whether walking, biking or riding a bus to school, to obey all traffic signals, signs and traffic officers. Remind him to be extra careful in bad weather. d. When driving your kid, deliver and pick them up as close to the school as possible. Don't leave until they are in the schoolyard or building. e. If your child rides a bike to school, make sure he wears a standard helmet . Research shows that a helmet can reduce the risk of head injury by 85%. f. Teach your kid to arrive at the bus stop earlier, stay off the street, and wait for the bus to come to a complete stop. g. Be sure that your kid knows his or her home phone number and address, your work number, the number of another trusted adult and how to call 911 for emergencies . Question: If your kid walks to school, tell him or her to   _  . - wear a helmet - go alone every day - walk as fast as possible - be more careful in bad weather
