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Read the article and select the best answer. Article: Every Christmas the giant tree inprefix = st1 /RockefellerCentersparkles with thousands of lights. From the beginning, when construction workers raised the first one during the depths of the Depression, it has been a symbol of hope. Diana Abad, like most Americans, loved that tree. In 1999, however, Diana was writing her will. The 33-year-old woman from Staten Island, New York, was diagnosed with leukemia and wanted to put her things in order. Doctors told her she had nine months to live. Her slim chance for survival lay in finding a bone marrow donor. The most likely source for a match is always among s -- but her family was tested and there was none. Then one day in February 2000, she got a call from the hospital saying that out of the four million people _ in the National Marrow Donor Program Registry, there was only one match. The potential donor was thinking about it. In March the donor agreed, and the transplant procedure was scheduled for March 27. On that day, a doctor came in with the marrow in a bag, and Diana remembers him saying:"This is it. If it doesn't graft within four to six hours, nothing will bring you back." Diana asked a priest to give her last rite . Almost immediately after the two-hour procedure, she felt stronger. Doctors told her it looked like the graft had taken. Donors are anonymous, but when she was better, Diana sent a note through the Registry: "You don't know the joy that I am experiencing," she wrote. "I hope that one day we can meet and I can thank you in person." It was several months before the donor replied. At first he didn't even give his name. He was 34-year-old David Mason, and he lived inDedham,Massachusetts. But eventually the two exchanged phone numbers and began to talk. Then unexpectedly and unannounced, he turned up at her door inEnglishtown,New Jersey, on December 23. She says it was love at first sight. He says he didn't feel it until they met the second time. That meeting began a... Question: What can we know about the Christmas tree in Rockefeller Center? Options: A: It was planted by the local inhabitants of Rockefeller in the United States. B: Diana got saved under the Christmas tree and so loved it. C: Many Americans love the tree because it was raised during the depths of the depression. D: The tree is very tall and beautifully decorated by people at Christmas time.
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D

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Read the article and select the best answer. Article: Facebook is now used by 30 million people in the UK,about half the population. Joanna Shields,vice president of Facebook Europe,made the announcement this morning at a media conference in London. She said: "We can announce today that we have reached 30 million in the UK,which we are really excited about." Globally,Facebook has more than 500 million registered users,a milestone it hit last summer.Last July,it also revealed that it had 26 million registered UK users.In the last eight months,it has attracted four million extra UK users,bringing the UK total to 30 million,while in January 2009,Facebook had only 150 million registered users. Last year,Zuckerberg,Facebook's founder,said it was "almost a guarantee" that the site would hit one billion users.He explained: "If we succeed in innovating,there is a good chance of bringing this to a billion people...it will be interesting to see how it comes true." One third of women aged 18 to 34 check Facebook when they first wake up,before even going to the toilet,according to research.Twenty-one per cent of women aged between 18 to 34 check Facebook in the middle of the night,while 42 per cent of the same group think it is fine to post drunken photos of themselves onto the social network,a study by Oxygen Media found. Shields was speaking this morning at the Financial Times Digital Media and Broadcasting Conference about the power Facebook's referrals can bring to media sites,such as newspapers and TV services. She explained that the average Facebook user has 130 friends who they share links to media sites with on a regular basis."Media companies which take advantage of that are really seeing the benefits",Shields said. Shields refused to say whether Facebook would develop its own mobile phone operating system and also said it was "silly" that Google had recently disabled the feature which allowed Google users to sync their contacts with Facebook friends. Question: What kind of people are more interested in Facebook according to the passage? Options: A: teenagers B: middle-aged people C: old people D: young people
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D

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Read the article and select the best answer. Article: Exhausted and unhappy, you still have to squeeze a smile to your friends, or teachers. That's just life, you may think. But new research suggests that putting on a fake smile can worsen people's mood and even lower work efficiency. Lead researcher Brent Scott with other researchers studied a group of bus drivers for two weeks. They tried to find out what happened when the drivers were involved in "surface acting" or fake smiling, and the opposite, "deep acting" which means people put on real smiles by recalling pleasant memories or thinking about their current situation more positively. The results showed that on days when drivers were forced to smile, they felt depressed and didn't want to work. On days when they smiled due to positive thoughts, their mood improved a lot as well as their work efficiency. The research goes against the popular belief among companies that employees should be cheerful to customers at all times. They include employees of shops, banks, call center workers and others who have face-to-face contact with members of the public. "Smiling for the sake of smiling can lead to emotional exhaustion and coldness, and that's bad for the organization," Scott told the Daily Mail. The study also showed that women were harmed more by fake smiling than men. Their mood and work performance both worsened more. But they were helped more by deep acting -- their mood became better and they worked more efficiently. However, while deep acting seemed to improve mood in the short term, Scott says it's not a long-term solution for unhappiness. "There have been some suggestions that if you do this over a long period that you start to feel inauthentic ," Scott said. "You may be trying to cultivate positive emotions, but at the end of the day you may not feel like yourself anymore." Question: The article is mainly about _ . Options: A: the importance of smiling during face-to-face contact B: a new study on fake smiling and its influence on people C: suggestions on improving work efficiency D: how to cheer up when you are exhausted
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B