Ques:Article: Most American kids love Halloween treats, but a bucket of Halloween candy can be a dentist's nightmare. Some parents try to get rid of half of the candy after their children go to bed, but dentists say parents also need to separate the good kinds of treats from the bad. It is not exactly what a child eats that truly matters, but how much time it stays in his mouth. According to pediatric dentist Dr. Kaneta Lott, the most damaging stuff is something that is sticky or very hard and thus stays in the mouth for a long time. This is because we all have bacteria in our mouths. When we eat, the bacteria take our food as their food and produce an acid that destroys the surface of the teeth, causing cavities to form. The longer the food stays in the mouth, the more likely cavities will develop. Therefore, potato chips are worse than candy because they get stuck between teeth. For the same reason, raisins and crackers are not the best choice. Hard candies take a long time to consume and are also a bad choice for Halloween treats. If children really love candy, dentists recommend that they eat chocolate instead. Unlike hard candies, chocolate dissolves quickly in the mouth. Besides, chocolate contains tannins, which help to kill some of the bacteria in the mouth. But no matter what a child eats, brushing after each meal is still the best way to fight cavities. Question: Why are hard candies especially bad for teeth? Yes or no, is the answer "They stay in the mouth for a long time."?

Ans:Yes
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Ques:Article: They survive in some of the coldest environments in the world--but even penguins appreciate a warm woolly jumper once in a while. The mini knitted garments have helped save hundreds of flightless birds caught in oil spills, providing protection from the elements and stopping them from eating poisonous pollution. Knits tor Nature,a program run by The Penguin Foundation,which protects the little penguin population of Phillip Island,140km south-east of Melbourne,has created up to 300 different designs over the years--and it's all thanks to talented volunteers. "There's a lot of hidden creativity out there,"said Lyn Blom,of the Phillip Island Nature Park."People love to know that they're helping the penguins because they're so cute and small and they waddle up the beach and they're so strong and determined.But they need to be,they 1ive in a pretty tough sort of environment.'' A thumbnail--sized patch of oil can kill a little penguin,the smallest of the species,measuring just l3 inches and weighing l kg.The oil separates and mats their feathers,breaking natural waterproofing and heating functions. Ms Blom estimates she has knitted between 200 and 300 penguin jumpers over the years. A staff member read an article in an English women's magazine about knitting for guillemot birds and decided to adapt the designs. "There's a lot of ladies out there who used to knit for their children and grandchildren.These ladies have spare wool and idle hands,and they love to feel loved and needed and we love and need them,"said Ms Blom. The Pengu in Foundation recently staged a competition for the most creative jumper,which received an enthusiastic response. The Penguin Foundation rescues approximately 20 birds a year.They even have a stockpile of jumpers in case of emergency-such as the large oil spill Phillip Island in 2001. In that instance,453 little penguins were affected,96 percent of which were saved-most thanks to the jumpers. Question: Which is the best title for the text? Yes or no, is the answer "The penguins' new garments"?

Ans:No
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Ques:Article: Yawning sends out certain messages -either "Oh,this movie is so boring" or "I probably need to get some sleep". But did you know that a yawn can also help your brain to cool down when it is overheated? A new study, led by a research team at Princeton University, has indicated that yawning could be the brain's natural way of regulating temperature. People yawn more often when the temperature outdoors is lower than their body temperature but are less likely to yawn when it is hotter outdoors, according to Sciencedaily. com. The research team did an experiment on 160 people, 80 in summer and 80 in winter, to examine how often they yawned at different air temperatures. The study found that people yawned more often in winter than in summer. Scientists say that when the air temperature is lower outside the body, there is heat exchange between the overheated brain and the cool air. But when the air temperature is higher than or equal to the body, people are less likely to yawn because the hot air they breathe in will make the brain even hotter. When people yawn, their jaw is also stretched,which increases blood flow and may also help cool the brain The study showed that the amount someone yawned could be related to the amount of time they spent outside. The longer they spent outside in summer, the less they yawned. Nearly 40 percent of participants yawned within their first five minutes outside, but after that the percentage was reduced to less than 10 percent. However, the result was the opposite in winter. The number of people who yawned increased when they spent more than five minutes outdoors. But the change was only slight compared to summertime. According to Gallup, this is the first report to show that yawning frequencies change depending on season. This could help us to understand better the way our brains work. It may also help us understand the reason why frequent yawning can sometimes be a sign of brain disease. Question: The purpose of the experiment is _ . Yes or no, is the answer "to find the frequency of people's yawning"?

Ans:No
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Ques:Article: The famous English writer, Charles Dickens, is on every British child's school reading list. Though Dickens is one of England's greatest writers, he is not often read. Most people do not read his books because they think they are too long and the language he uses is old-fashioned . Television, however, has rescued this great English writer from disappearing in the modern age. In the UK for several years, Dickens' novels have been turned into exciting television dramas. His latest book to be filmed is his little known story Little Dorrit. Before the story became a 15-part television drama most Britons were unaware that Dickens had ever written it. Most of the Dickens television dramas are so well filmed that English students are likely to watch them in class while studying his book. There are, however, some differences between the books and television dramas. The television dramas often give more time to the exciting parts of Dickens' books. For example, there is far more kissing scenes in the television shows than there are in the books. Some television dramas have also slightly changed Dickens' female characters to make them more acceptable to a modern audience . In Dickens' books his females are often weak and emotional. The TV dramas, however, show them as being fairly independent-minded. Several TV critics have argued that Dickens' stories are actually better suited to television than they are being read as books. Their reasoning is that Dickens wrote his stories for newspapers. A chapter would appear in the newspaper each week so Dickens ended each chapter at an exciting moment. People then would buy the newspaper the following week to find out what happened later. This makes his stories perfect for being shown on television as 15-part programs. Question: We can learn from the TV critics that _ . Yes or no, is the answer "Dickens' stories were originally intended for newspaper readers"?

Ans:
No
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