input: Please answer the following: Write a multi-choice question for the following article: Article: Everybody hates it, but everybody does it . A recent report said that 40% of Americans hate tipping . In America alone , tipping is a $16 billion-a-year industry .Consumers acting politely ought not to pay more than they have to for a given service . Tips should not exist . So why do they ? The common opinion in the past was that tips both rewarded the efforts of good service and reduced uncomfortable feelings of inequality. And also, tipping makes for closer relations. It went without saying that the better the service, the bigger the tip . But according to new research from Cornell University , tips no longer serves any useful function . The paper analyzes numbers they got from 2547 groups dining at 20 different restaurants . The connection between larger tips and better service was very weak . Only a tiny part of the size of the tip had anything to do with the quality of service . Tipping is better explained by culture than by the money people spend . In America , the custom came into being a long time ago . It is regarded as part of the accepted cost of a service. In New York restaurants , failing to tip at least 15% could well mean dissatisfaction from the customers . Hairdressers can expect to get 15%--20% , and the man who delivers your fast food $ 2. In Europe , tipping is less common . In many restaurants the amount of tip is decided by a standard service charge . In many Asian countries , tipping has never really _ at all . Only a few have really taken to tipping. According to Michael Lynn , the Cornell papers' author , countries in which people are more social or outgoing tend to tip more . Tipping may reduce anxiety about being served by strangers . And , says , Mr . Lynn, "in America , where people are expressive and eager to mix up with others , tipping is about social approval . If you tip badly , people think less of you . "Tipping well is a chance to show off ."
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output: Question: This passage is mainly about _ .Options:A different kinds of tipping in different countriesB the relationship between tipping and customC the original and present meaning of tippingD most American people hate tippingAnswer:C

input: Please answer the following: Write a multi-choice question for the following article: Article: The Growing Credit Crisis Forces Many Companies to Seek Government Help On September fifteenth, Lehman Brothers, a one hundred fifty-eight year-old investment bank, sought legal protection from its creditors. It had failed to find a buyer after months of searching. With over six hundred billion dollars in debt, Lehman's failure was the largest bankruptcv in United States history At the same time,the nation's biggest insurance company,American International Group, had gotten into trouble selling credit default swaps These are contracts Similar to insurance that protect the holder against credit risk. Credit rating agencies downgraded A.I.G because of concerns it could not honor its contracts. Unable to get new loans, A.I.G asked for government help The Federal Reserve agreed to loan A .I.G. eighty-five billion dollars in return for eighty percent of the company but it was not enough. By November, the government had extended a total of about one hundred fiftv billion doliars in aid to A .I.G--the most to any single company during the crisis. As banks refused to lend, Treasury Secretary Henry Paulson proposed a plan to loosen credit markets by buylng risky assets. Congress approved the Emergency Economic Stabilization Act of Two. Thousand eight on October third The bill provided seven hundred billion dollars to buy hard to-value securltles from banks. But within weeks, the government changed plans. The Treasury moved to invest two handred fifty billion dollars directly in banks to help them lend money again. Lack of credit not only hurt banks but manufacturers, too. Falling car sales threatened America's carmakers The big three automakers--General Motors, Ford and Chrysler--told Congress that they needed loans or they faced bankmptcy. In December, President Bush offered G.M and Chrysler over seventeen billion dollars in loans. As the year ended, the Federal Reserve tried to support economic growth by lowering its main interest rate to nearly zero for the first time. But there was one more bad surprise New York...
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output: Question: The last sentence of this passage indicates that the author's attitude towards the U.S economy in 2008 isOptions:A pessimisticB optimisticC objectiveD subjectiveAnswer:A

input: Please answer the following: Write a multi-choice question for the following article: Article: It is an aerial performance far beyond the capabilities of even the most complex modern aircraft: landing upside down on a ceiling. But it is routine business for bats, and now scientists have learned precisely how they do it. Brown University scientists observed two species: Seba's short-tailed bat and the lesser dog-faced fruit bat. They tracked their motions using three high-speed video cameras taking images at 1,000 frames per second, and studied weight distribution in the bats' body and wings. They found that by flapping both wings while folding one of them just a bit toward their body, a bat can shift its centre of mass to perform a midair flip in order to land on a ceiling. "Flying animals all move skillfully constantly as they fly through a three-dimensional environment," Brown biology and engineering professor Sharon Swartz said. "Bats employ this specific technique every time they land, because for a bat, landing requires reorienting from head forward, back up, belly down, to head down, toes up." When approaching their touchdown spot, bats are not flying very quickly, making it difficult to gather the type of aerodynamic forces produced by pushing against the air that could help position them for an upside-down landing. But their heavy wings enable them instead to create inertial forces to adjust themselves in midair. Swartz said bats, as nocturnal animals, are generally not fully appreciated as skilled pilots. "People have many opportunities to observe birds and insects flying, but the bat world is hidden in the night. The more we observe flight behavior in bats, the more we are impressed," Swartz said.
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output: Question: Why aren't bats generally recognized as skilled pilots?Options:A Their flying skills are controversial.B Their flight behavior is hard to understand.C They're not the most skilled in flying.D They're primarily active at night.Answer:D

input: Please answer the following: Write a multi-choice question for the following article: Article: Thank you for choosing Yale University housing. The following information should answer questions you may have about housing services. Housing office There is a housing office in the New Residence Hall and is open seven days a week, 8:30 a.m. to 8:30 p.m., for check-in and check-out. You can call the assistants there for any questions about housing. Telephone: 436-4119. Or if you are moving in, you can call Housekeeping at 436-4108 and ask to have your rooms cleaned. Common Room and Meeting Rooms The building has a common room (BO77) for the use of guests for studying and gathering. Do not leave personal things in the common room. Close any windows you open when you leave the room. The meeting rooms 223 (for 10 people) and 323 (for 18 people) each have a television and a VCR. You don't need to reserve the common room and for reservation of meeting rooms, please call the Housing Office. Computer Rooms There are two computer rooms (221 &421) in the building. They offer Macintoshes, Windows computers, and printing to guests. These computers are maintained by Yale University's Computing Assistants (www.yale.edu/cas Tel:436-5990). If you have any problems, for example, if there's no printer paper, please report it to the housing office. Telephone Service Each room is equipped with a telephone. Your telephone number is 436-4 followed by your room number (for example, Room 112, tel.436-4112). To call a university number, press the last five numbers only. To make a call outside the university, press 9 first and then the number.
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output:
Question: When you want to book a room in the New Residence Hall, you should call .Options:A 436-4119B 436-5990C 436-4112D 436-4108Answer:A