Problem: Given the question: Write a multi-choice question for the following article, with the given choices and answer: Article: A couple of years ago, those who forecast that oil price would reach $ 100 a barrel were seen as doomsters. However, now some are predicting $ 200 a barrel. Had economists been told that oil price would barely pause at $ 100 before reaching the recent peak of nearly $ 127, they would no doubt have forecast terrible economic consequences. But the global economy, though interrupted by the high price of energy, is still chugging along. Meanwhile, inflation has picked up, but the headlinerates of inflation in most developed countries are nowhere near the levels seen in the 1970s and 1980s. There are three explanations for the oil price's unclear impact. The first is that nowadays developed economies are more efficient in their use of energy, thanks partly to the increased importance of service industries and the diminished role of manufacturing . According to the Energy Information Administration, the energy intensity of America's GDP fell by 42% between 1980 and 2007. A second theory is that the oil-price rise has been steady, not sudden, giving the economy time to adjust. Giovanni Serio of Goldman Sachs points out that in 1973 there was a severe supply shock because of the oil embargo , when the world had to cope with 10%-15% less crude almost overnight. Not this time. The third explanation turns the argument on its head; rather than oil harming the global economy, it is global expansion that is driving up the price of oil. The most important factor is the shift in favor of the developing economies. America has responded to high price in familiar fashion: UBS forecasts that demand will drop by 1.1% this year and will be no higher in 2010 than it was in 2004. But the demand from China and other emerging markets is more than offsetting this shortfall. Options: A Two B Three C Four D Five Answer: B Three Question:
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The answer is:
How many explanations for the oil price's impact are mentioned in the passage?

Problem: Given the question: Write a multi-choice question for the following article, with the given choices and answer: Article: Thirteen vehicles lined up last March to race across the Mojave Desert , seeking a million in prize money . To win , they had to finish the 142-mile race in less than 10 hours . Teams and watchers knew there might be no winner at all , because these vehicles were missinge a key part drivers . DARPA , the Defense Advanced Research Projects Agency , organized the race as part of a push to develop robotic vehicles for future battlefields . But the Grand Challenge , as it was called , just proved how difficult it is to get a car to speed across an unfamiliar desert without human guidance . One had its brake lock up in the starting area . Another began by throwing itself onto a wall . Another got tied up by bushes near the road after 1.9 miles . One turned upside down . One took off in entirely the wrong direction and had to be disabled by remote control . One went a little more than a mile and rushed into a fence ; another managed to go for six miles but stuck on a rock . The "winner," if there was any , reached 7.8 miles before it ran into a long , narrow hole , and the front wheels caught on fire . "You get a lot of respect for natural abilities of the living things," says Reinhold Behringer , who helped design two of the car-size vehicles for a company called Sci-Autonics . "Even ants can do all these tasks effortlessly . It's very hard for us to put these abilities into our machines ." The robotic vehicles , though with necessary modern equipment such as advanced computers and GPS guidance , had trouble figuring out fast enough the blocks ahead that a two-year-old human recognizes immediately , Sure , that very young child, who has just only learned to walk , may not think to wipe apple juice off her face , but she already knows that when there's a cookie in the kitchen she has to climb up the table , and that when she gets to the cookie it will taste good . She is more advanced , even months old , than any machine humans have designed . Options: A about eight miles B six miles C almost two miles D about one mile Answer: A about eight miles Question:
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The answer is:
In the race , the greatest distance one robotic vehicle covered was_.

Problem: Given the question: Write a multi-choice question for the following article, with the given choices and answer: Article: Joker found one of the biggest diamonds in the world in his own back yard. He sold the stone to a diamond dealer for over three hundred thousand dollars. In New York, the diamond was resold. This time for almost eight hundred thousand dollars. The true value of a diamond is never known until it has been cut. Once cut successfully, its value can increase a thousand times. It's easy to understand why the owner of the Joker diamond went to the best diamond cutter he knew, Kaplan. The cutter studied the diamond for twelve whole months. When he felt he was ready to start work, he discovered a flaw . He had to begin with his calculations all over again, or he might have made the stone useless. Six more months passed, and Kaplan finally said to the owner, "I m ready to start my work. There will be one excellent diamond that be comparable to any in the world, plus eleven small diamonds of first-class quality." Kaplan waited a few more days until be felt he was in the best physical and mental condition possible. He picked up his tools and held his breath as he made the first blow. The diamond split exactly as he promised. Options: A $300,000 B $500, 000 C $300, 000,000 D $800, 000, 000 Answer: D $800, 000, 000 Question:
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The answer is:
The owner of the diamond thought that if the diamond was cut successfully it might be worth _ .