Read the following article and answer the question. Article: Vacation spots in Ohio The Boon shoft Museum of Discovery  The museum is based on the understanding that science is the process through which we come to  understand our world, and that play is the way children do science. Visitors of all ages can explore the wonders of the world. The museum includes many places for adventure such as the Discovery Center and the Hall of the Universe. What make adventures more exciting are real speciments   from the museum's collection of 1.4 million items. African Wildlife Park      This wildlife park is spread across a large area of about 100 acres and you can see different species of animals moving freely as if in their natural habitat. On entering the park, you are given a basket of food for free. You are able to feed the animals out of the comfort of your own car. Any additional basket of food needs to be paid for. Rock and Roll Hall of Fame       Rock and Roll Hall of Fame was opened some where in 1995, with a purpose of celebrating the spirit of rock and roll music and also studying it! It is among the top 10 vacation spots in Ohio. Rock and Roll Hall of Fame offers exhibitions, music events and also training programs on the subject. This is a perfect stop for everything on rock and roll music! The Armstrong Museum       The Armstrong Museum, located in Neil Armstrong's hometown of Wapakoneta, Ohio, celebrates the life and the mission   of the first man to walk on the moon. You can see one of the planes that Armstrong tested and enjoy a film about the development of the US space program. Question: If a student is interested in the history of the US space program, he will probably visit  _  . Answer:
the Armstrong Museum
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Read the following article and answer the question. Article: Most people think of racing when they see greyhounds and believe they need lots of exercise. They can actually be quite lazy!  Greyhounds are good at fast races but not long-distance running. They do need regular exercise but they like to run for a short burst and then get back on the bed or a comfortable seat. Another misunderstanding is that greyhounds must be aggressive because they are big in size. In fact greyhounds love people and are gentle with children. Greyhounds can live for 12 - 14 years but usually only race for two or three years, and after that they make great pets. They don't need a lot of space, don't make a lot of noise, and don't eat a lot for their size. Normally, greyhounds can be as tall as 90 cm. There is, however, a small-sized greyhound, which stands only 33 cm. Greyhounds come in a variety of colors. Grey and yellowish-brown are the most common. Others include black, white, blue, red and brown or a mix of these. Greyhounds have smooth body coats, low body fat and are very healthy. Because they're slim they don't have the leg problems like other dogs the same height . But they do feel the cold, especially since they would much rather be at home in bed than walking around outside. Question: If you keep a pet greyhound, it is important   _  . Answer:
to keep it warm
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Read the following article and answer the question. Article: Let's do some sleep math. You lost two hours of sleep every night last week because of a big project due on Friday. On Saturday and Sunday, you slept in, getting four extra hours. On Monday morning, you were feeling so bright-eyed, and you only had one cup of coffee, instead of your usual two. But don't be cheated by your energy: You're still carrying around a heavy load of sleepiness, or what experts call "sleep debt". Sleep debt is the difference between the amount of sleep you should get and the amount you actually get. It's a _ that grows every time we remove some minutes off our nightly sleep. "People get more and more sleep debt without noticing it," says William Dement, founder of the Stanford University Sleep Research Centre. Studies show that such short-term lack of sleep leads to a foggy brain, worsened eyesight, and trouble remembering. Long-term effects include obesity, and heart disease. A survey reports that we're losing one hour of sleep each night--more than two full weeks of sleep each year. The good news is that, like all debts, sleep debt can be paid off with some work. Adding an extra hour or two of sleep a night is the way to catch up. For the long-term lack of sleep, take it easy for a few months to get back into a natural sleep pattern . Go to bed when you are tired, and allow your body to wake you in the morning naturally (no alarm clock allowed). As you pay off sleep debt, your body will come to a rest at a sleep pattern that is particularly right for you. Sleep researchers believe that although the exact genes   remain to be discovered, genes do determine our individual sleep patterns. That probably means you can't train yourself to be a "short sleeper" and you're fooling yourself if you think you've done it, so earn back that lost sleep and follow the orders of your inner sleep needs. When you put away sleep debt, you become a superman. Question: The example of sleep math is used to show  _  . Answer:
how you build up your sleep debt
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Read the following article and answer the question. Article: Runners in a relay race pass a stick in one direction.However,merchants  passed silk,gold, fruit,and g1ass along the Silk Road in more than one direction.They earned their living by traveling the famous Silk Road. The Silk Road was not a simple trading network. It passed through thousands of cities and towns. It started from eastern China, across Central Asia and the Middle East, and ended in the Mediterranean Sea. It was used from about 200 B.C. to about A.D.1300, when sea travel offered new routes  . It was sometimes called the world's longest highway. However, the Silk Road was made up of many routes, not one smooth path. They passed through what are now 18 countries. The routes crossed mountains and deserts and had many dangers of hot sun, deep snow and even battles. Only experienced traders could return safe. The Silk Road got its name from its most prized product. Silk could be used like money to pay taxes or buy goods. But the traders carried more than just silk. Gold, silver, and glass from Europe were much found in the Middle East and Asia. Horses traded from other areas changed farming practices in China. Indian merchants traded salt and other valuable goods. Chinese merchants traded paper, which produced an immediate effect on the West. Apples traveled from centre Asia to Rome. The Chinese had learned to graft  different trees together to make new kinds of fruit. They passed this science on to others, including the Romans. The Romans used grafting to grow the apple. Trading along the Silk Road led to world-wide business 2,000 years before the World Wide Web. The People along the Silk Road did not share just goods. They also shared    their beliefs.The silk Road provided pathways for learning,diplomacy ,and religion.* Question: The Silk Road became less important because  _  . Answer:
