Most people, when they travel to space, would like to stay in orbit for a few days of more. And this stands to reason, if you' re paying $20,000 for your trip to orbit! Strain order for tourism to reach its full potential there' s going to be a need for orbital accommodation--or space hotels. What would a space hotel actually be like to visit? Hotels in orbit will offer the services you expect from a hotel--private rooms, meals, bars. But they' ll also offer two unique experiences: impressive views--of Earth and space--and the endless entertainment of living in zero gravity--including sports and other activities that make use of this.    The hotels themselves will vary greatly--from being quite simple in the early days to huge luxury structure at a later date. It s actually surprising that as later as 1997, very few designs for space hotels were published. This is mainly because those who might be expected to design them haven' t expected launch costs to come down far enough to make them possible.     Lots of people who' ve been to space have described vividly what it' s like to live in zero gravity. There are obviously all sort of possibilities for dancing, gymnastics, and zero-G sports. Luckily, you don' t need to sleep much living in zero gravity, so you' ll have plenty of time for relaxing by hanging out in a bar with a window looking down at the turning Earth below.     Of course all good things have come to an end. Unfortunately, and so after a few days you' ll find yourself heading back enough you' ll be much more expert at exercising in zero gravity than you were when you arrived. You' ll be thinking how soon you can save up enough to get back up again--or maybe you should change jobs to get to work in an orbiting hotel. When traveling in space, most people would like to stay in orbi t for a few days because   _  . A) It is expensive to travel in space B) they would find the possible life in other star systems C) they could enjoy the luxury of space hotels D) they want to realize the full potential of tourism
A


(Question)
Perhaps it is hard to imagine that a bad tooth could be deadly. But doctors in the Washington area say a twelveyearold boy died last month of a tooth infection that spread to his brain. They say it might have been prevented if the boy had received the dental care he needed. Experts at the National Institutes of Health say good dental care should start at birth. They say breast milk is the best food for the healthy development of teeth. Breast milk can help slow bacterial growth and acid production in the mouth. When baby's teeth begin to appear,you can clean them with a wet toothbrush. Dentists say it is important to find soft toothbrushes made especially for babies,and use them very gently. The use of fluoride   to protect teeth is common in many parts of the world. This natural element is often added to drinking water supplies. The fluoride mixes with enamel ,the hard surface on teeth,to help prevent holes,or cavities from forming. But the American Academy of Pediatric Dentistry points out that young children often swallow toothpaste when they brush their teeth. The group notes that swallowing fluoridated toothpaste can cause problems. So young children should be carefully supervised when they brush their teeth. And only a small amount of fluoridated toothpaste,the size of a green pea,should be used. Parents often wonder what effects sucking a thumb or sucking on a pacifier might have on their baby's teeth. Dental experts generally agree that this is fine early in life. The American Academy of Family Physicians says most kids stop sucking their thumbs by the age of four. If it continues,the group advises parents to talk to their child's dentist or doctor. It could influence the correct development of permanent teeth. The boy with a bad tooth died because  _  . A) his tooth disease was very deadly B) the doctor refused to treat him properly C) he didn't receive timely treatment D) something was wrong with his brain
(Answer)
C


Ques: Emma Hart Willard (1787--1870) was an American pioneer educator. In her time, colleges and universities were open only to men, and women were not permitted to attend. Emma received advanced education at home from her father and became a school teacher at twenty. She continued to teach at school for several years after her marriage. Then began offer college lessons in her home to women students. Later she founded a school in New York State, which was the first school that offered higher education in the US for women. Emma Willard also tried to persuade New York State to pass a law to allow women to attend public colleges and universities, though that did not come about until after her death. Some years later people remembered her for her life-long efforts and elected her to the US Hall of Fame   in 1905. What do you suppose the US Hall of Fame is? A) It is a grand hall where honoured people receive prizes from the government. B) It is a place where honoured people in the US are buried. C) It is a building set up in memory of great American people. D) It is a house of representatives to which respected people are elected.
Ans: C


Ques:A new study suggests that the way to weight loss may be clear.A couple of glasses of water before meals help dieters lose about 5 pounds more than those who do not drink water.While drinking water before a meal may fill a person up,the contents of their meal are important as well.Should a person be eating a low-fat diet or a lowcarbohydrate   diet? Or does it matter at all? Recent research suggests that one diet isn't any better than the other.A few weeks before the water study,another concluded that lowfat and lowcarbohydrate diets tied in weight loss.While the lowcarbohydrate dieters did show a slight increase in good cholesterol   and a reduction in blood pressure,there was not much difference in the dieters'weight loss.The point here is that the person had to stick to the diet.What helps a person see a diet through? It could be body type. A study published in the Journal of the American Medical Association,as reported byTimemagazine,found that body shape is the key to which diet a person will be able to stick with.Apples are people who carry most of their weight above the belt,while pears carry their weight around their hips  .Apple types were more likely to be highinsulin secretors   who respond more strongly to carbohydrates in their bodies.They lost the most weight on a lowcarbohydrate diet.Pears were lowinsulin secretors who lost the same amount of weight on both diets.Unstable   insulin levels can create stronger hunger senses,causing the apple types to go off their diet plans. All of these studies again come down to choosing the diet that helps you eat less.The bodytype diet does make some sense as men are more likely to be apple types,with larger stomachs,and tend to do well on higherprotein diets,while women,who tend to carry weight around their hips,find themselves drawn to the lowfat diets.The reality is if a diet is failing you try another one.A plan you can't,or won't,stick to will never work,no matter what the research says. In the author's opinion,  _  . A) men don't get hungry as easily as women B) apple types work better than pear types in weight loss C) the result of the recent research is not of much value D) strong will as well as proper methods is the key to weight loss

Ans:
D