Read the following article and select the best answer. Article: Whether you're eating at a fancy restaurant or dining in someone's home. Proper table manners are likely to help you make a good impression. According to a US expert, Emily Post, "All rules of table manners are made to avoid ugliness." While Henry Hitchings of the Los Angeles Times admits that good manners can reduce social conflict, he points out that mostly their purpose is protective - they turn our natural warrior-like selves into more elegant ones. So where did table manners come from? In medieval England, a writer named Petrus Alfonsi took the lead to urge people not to speak with their mouths full. And King David I of Scotland also proposed that any of his people who learned to eat more neatly be given a tax deduction . Disappointingly, that idea never _ . It was during the Renaissance, when there were real technical developments, opinions of correct behavior changed for good. "None of these was more significant than the introduction of the table fork," wrote Hitchings. "Gradually, as forks became popular, they brought the new way of eating, making it possible, for instance, to consume berries without making one's fingers dirty." Forks were introduced to Britain in 1608 and 25 years later, the first table fork reached America. Yet while most of the essentials are the same on both sides of the Atlantic, there are a few clear differences between what's normal in the US and what holds true in the UK. For example, in the US, when food needs cutting with a knife, people generally cut a bite, then lay aside the knife and switch the fork to their right hand. Then they pick up one bite at a time. By contrast, Britons keep the fork in the left hand and don't lay the knife down. Though globalization has developed a new, simpler international standard of table manners, some people still stick with the American cut-and-switch method.The Los Angeles Times noted, "They are hanging on to a form of behavior that favors manners above efficiency." Question: What does the story mainly talk about? - The importance of proper table manners . - The development of table manners in Western countries. - Some unwritten rules of table manners in the US and UK. - Differences between American and British table manners.
The development of table manners in Western countries.

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Read the following article and select the best answer. Article: Petroleum, consisting of crude oil and natural gas, seems to originate from organic matter in marine sediment .Tiny organisms settle to the seafloor and gather in marine mud. The organic matter may partially break down, using up the dissolved oxygen in the sediment. As soon as the oxygen is gone, decay stops and the remaining organic matter is preserved. Continued sedimentation buries the organic matter and subjects it to higher temperatures and pressures, which change the organic matter to oil and gas. As muddy sediments are pressed together, the gas and small drops of oil may be squeezed out of the mud and may move into sandy layers nearby. Over millions of years, accumulations of gas and oil can collect in the sandy layers. Both oil and gas are less dense than water, so they generally tend to rise upward through rock and sediment. Oil pools are valuable underground accumulations of oil, and oil fields are regions underlain by one or more oil pools. When an oil pool or field is discovered, wells are drilled into the ground. When the well reaches a pool, oil usually rises up the well because of its density difference with water beneath it or because of the pressure of expanding gas trapped above it. Although this rise of oil is almost always carefully controlled today, strong natural flows of oil were common in the past. Gas pressure gradually dies out, and oil is pumped from the well. Water or steam may be pumped down neighboring wells to help push the oil out. As oil becomes increasingly difficult to find, the search for it is extended into more unfriendly environments. The development of the oil field on the North Slope of Alaska and the construction of the Alaska pipeline are examples of the great expense and difficulty involved in new oil discoveries. Offshore drilling platforms extend the search for oil to the ocean's continental shelves. More than one-quarter of the world's oil and almost one-fifth of the world's natural gas come from offshore, even though offshore drilling is six to seven times... Question: What does the development of the Alaskan oil field mentioned illustrate? - More petroleum is extracted from the sea than from land. - Drilling for oil requires huge financial investments. - The global demand for oil has been increasing over the years. - The North Slope of Alaska has substantial amounts of oil.
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Drilling for oil requires huge financial investments.

Read the following article and select the best answer. Article: Yesterday the police were joined by more than 20 volunteers in the continuing search for the two missing teenagers, Vicky Gray and Tom Hunter, and their guide, Gavin Jones. The police said that they had disappeared during an adventure tour of Cape York Peninsula. This was the second day of the search and the police were now very worried about the safety of the three missing people. The police said that the search had covered a wide area, but the rainforest was thick and their work was made harder by the recent rain. Later on Chief Inspector Roger Fleet said, "The travelers had a radio with them. If they had been in trouble, they would have called us." The three travelers left Cooktown very early on Saturday morning in aToyota car. They took a small dirt road that runs down to the Daintree River, a dangerous river full of crocodiles . Chief Inspector Roger Fleet said the tourists wouldn't have got into trouble if they had stayed on the main road. A photo of Vicky and Tom was found by a policeman under the "Be Careful about crocodiles" sign near the river. Why was the photo left behind? This is just one of the unanswered questions. Other questions are: Why was the photo left behind? Why was theToyotaparked and locked at the edge of the rainforest? The police said that the travelers had left a map of the area behind. Why? Why had someone drawn a cross on the point where the car is? Is this a sign? What does it mean? If anyone can give information or has seen these three young people, contact the local police in Cooktown. Question: Which of the following things wasn't found by the police? - A touring map. - A photo of the travelers. - The travelers' radio. - The travelers' car
The travelers' radio.