user: Problem: 
Q: Read the following article and answer the question. Article: By the mid-nineteenth century, the term "icebox" had entered the American language, but ice was still only beginning to affect the diet of ordinary citizens in the United States. The ice trade grew with the growth of cities. Ice was used in hotels, taverns , and hospitals, and by some forward-looking city dealers in fresh meat, fresh fish, and butter. After the Civil War (1861-1865), as ice was used to refrigerate freight cars, it also came into household use. Even before 1880, half of the ice sold in New York, Philadelphia, and Baltimore, and one-third of that sold in Boston and Chicago, went to families for their own use. This had become possible because a new household convenience, the icebox, a precursor   of the modern fridge, had been invented. Making an efficient icebox as not as easy as we might now suppose. In the early nineteenth century, the knowledge of the physics of heat, which was essential to a science of refrigeration, was rudimentary . The commonsense notion that the best icebox was one that prevented the ice from melting was of course mistaken, for it was the melting of the ice that performed the cooling. Nevertheless, early efforts to economize ice included wrapping up the ice in blankets, which kept the ice from doing its job. Not until near the end of the nineteenth century did inventors achieve the delicate balance of insulation  and circulation needed for an efficient icebox. But as early as 1803, and ingenious Maryland farmer, Thomas Moore, had been on the right track. He owned a farm about twenty miles outside the city of Washington, for which the village of Georgetown was the market center. When he used an icebox of his own design to transport his butter to market, he found that customers would pass up the rapidly melting stuff in the tubs of his competitors to pay a premium price  for his butter, still fresh and hard in neat, one-pound bricks. One advantage of his icebox, Moore explained, was that farmers would no longer have to travel to market at night in order to keep their produce cool. Question: What can we infer from the text? Answer:
Answer: Knowledge of the physics of heat plays an important part in inventing a good icebox
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Q: Read the following article and answer the question. Article: Claude Monet was born on November 14, 1840, in Paris, but he spent most of his childhood in Le Havre, a city of southern France. By the time he was fifteen Monet had become popular as a caricaturist . Through an exhibition of his drawings at a local frame shop in 1858, Monet met the French landscape painter Eugene Louis Boudin, who introduced Monet to outdoor painting, an activity that soon became his life's work. By 1859 Monet had committed himself to a career as an artist and began to spend as much time in Pairs as possible. During the 1860s he met Edouard Manet. With other ambitious French painters, they formed the impressionist school. Working outside, Monet painted simple landscapes and he began to have some success. As his style developed, however, Monet broke one traditional artistic convention after another. His experiments with bright color1 became more and more daring, and he seemed to cut himself off from the possibility of a successful career as a conventional painter supported by the art establishment. In 1874 Monet and his colleagues decided to organize their own exhibition. They called themselves independents, but the press soon labeled them impressionists because one of Monet's paintings had borne the title Impression: Sunrise. Then the name stuck. By the mid-1880s , Monet , generally regarded as the leader of the impressionist school, had achieved significant recognition and financial security. In 1890 he was able to purchase some property in the village of Giverny, not far from Paris, and there be began to construct a water garden--a water lily pond with a Japanese bridge. Beginning in 1906, paintings of the pond and the water lilies occupied his mind for the rest of his life. His famous series Water Lilies, painted between 1990 and 1926, Clearly shows the artist's strong interest in color1 and produces a remarkable visual effect. Despite failing eyesight, Monet continued to paint almost up to the time of his death, on December 5,1926, at Giverny. Question: Which of the following is TRUE about impressionists? Answer:
Answer: They got the name partly because of a painting of Monet's.
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Q: Read the following article and answer the question. Article: Mr. Backer is a kind-hearted man. Once he gave some food to a poor woman . Mr White, the boss of the restaurant, found it and became angry. He often gave the leftovers  to  some poor workers. Mr. Backers lost his work for it. It was difficult for him to find work in the small country though he was an able cook. The war made all stop. Children couldn't go  to school, most shops were closed, even some farmers were  hungry. Some people were made to leave their houses and they had to find the safe places. It was an autumn night. Mr Backer  hadn't any food to eat and went to bed, but he couldn't fall asleep, because he was very hungry . suddenly he heard a noise in  his room. He saw a man looking for something useful there. He said nothing and watched it carefully. At last the man took a few old clothes out of a broken paper box and took them away. He got up from his bed quickly and followed him gently , with his _ on his back. The man didn't find him and went into a small and wet house. Mr. Backer also went in and saw there was nothing in the room. The thief  saw him and was surprised. He asked, "What did you come here for?" "You have carried my things here," said Mr. Backer. "I have to move here, too!" Question: Mr. Backer couldn't go to sleep because  _  . Answer:
Answer:

assistant: he was hungry