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Read the article and select the best answer. Article: President Barack Obama rode a bicycle at the White House Science Fair on April 22. But it wasn't an ordinary bike. As he pedaled, the President stayed in place, while the energy from his pedaling powered a water filtration system. He was testing an invention created by a team of 14 students from Northeast High School, in Oakland Park, Florida. Payton Karr, 16, and Kiona Elliot, 18, attended the fair as representatives of the project."We were hoping President Obama would ride the bike, but we didn't actually expect him to," Payton told TFK. " It really meant a lot." Kiona agreed. "It was pretty awesome to see the invention, which was invented by a group of 14 high school students and one teacher, along with the help of community members, got the interest of the leader of our nation," she said. The project was an idea that came about after one of the Northeast students, Kalie Hoke, visited Haiti after the terrible 2010 earthquake and saw how difficult it was to find clean water. The students invented a portable , bicycle-powered emergency water filtration system, which can provide 20-30 people with drinking water in a 15-hour period. The teens hope their invention will one day be used by relief organizations like the Red Cross. " They can take it to places after natural disasters so that water can be clean for the people there," said Payton. Payton and Kiona were among the 100 students from more than 40 states invited to the third annual White House Science Fair, in Washington, D.C., which is also attended by leaders in science and education. President Obama started the event in 2010 to _ students interested in STEM (Science, Technology, Engineering, Maths)."Well, if you're a young person and you produce the best experiment or design, you ought to be recognized for that achievement," Obama said when he first announced the fair. President Obama praised the projects during a speech to attendees after the fair. "The science fair projects of today could become the products and businesses of tomorrow," he said.... Question: The representatives of the bicycle-powered water filtration system _ . Options: A: were both community members B: graduated from a famous university C: finished the project with the help of their parents D: were surprised that their invention interested Obama
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D

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Read the article and select the best answer. Article: Do youwanttoimprovetheway youstudy? Do you feel nervous before a test? Many students say that a lack of concentration is their biggest problem. It seriously affects their ability tostudy, sodotheir test results.If so, use these tips tohelpyou. Study Techniques *You should always study in the same place. You shouldn't sit in a position that you use for another purpose. For example, when you sit on a sofa to study, your brain will think it is time to relax. Don't watch TV while youare studying. Experts warn that your concentration may be reduced by 50 percent if youattempttostudyin thisway. Always try tohave a white wall in front ofyou, so there is nothingtodistract(make less concentrated) you. *Your eyes will become tired if youtrytoread a text which is on a flat surface. Position your book at an angle of 30 degrees. *Don't try to complete too much in one study period. Finish one thing before beginning another.If you need a break, get up and walk around for a few minutes. Test-taking skills *All your hard work will be for nothing if youare too nervoustotake your test. Getting plenty of rest is very important. This means donotstudyall night before your test! It is a better ideatohave a long-termstudyplan. Try tomake a timetable for yourstudywhich lasts for a few months. *Exercise is a great waytoreduce pressure. Doing some form of exercise every day will also improveyour concentration. Eat healthy food too. *When youarrive intheexamination room, find your seat and sit down. Breathe slowly and deeply. Check thetime ontheclock duringthetest, but not too often. Above all, take no notice of everyone else and give thetest paper your undivided attention. Question: Which of the following is the best title for the passage? Options: A: Time - planning skills B: Exercise - doing skills C: Pressure -reducing skills D: Tips on both study and test - taking
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D

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Read the article and select the best answer. Article: Treasure hunts have excited people's imagination for hundreds of years both in real life and in books such as Robert Louis Stevenson's Treasure Island .Kit Williams ,a modern writer ,had the idea of combining the real excitement of a treasure hunt with clues found in a book when he wrote a children's story Masquerade, in 1979. The book was about a hare ,and a month before it came out, Williams buried a gold hare in a park in Bedfordshire .The book contained a large number of clues to help readers find the hare ,but Williams put in a lot of "red herrings ",or false clues ,to mislead _ Ken Roberts ,the man who found the hare ,had been looking for it for nearly two years .Although he had been searching in the wrong area most of the time ,he found it by logic ,not by luck .His success came from the fact that he had gained an important clue at the start .He had realized that the words :"One of Six to Eight" under the first picture in the book connected the hare in some way to Katherine of Aragon ,the first of Henry VIII's six wives. Even here ,however ,Williams had succeeded in misleading him .Ken knew that Katherine of Aragon had died at Kimbolton in Cambridgeshire in 1536 and thought that Williams had buried the hare there .He had been digging there for over a year before a new idea occurred to him. He found out that Kit Williams had spent his childhood near Ampthill ,in Befordshire and thought that he must have buried the hare in a place he knew well ,but he still could not see the connection with Katherine of Aragon ,until one day he came across two stone crosses in Ampthill Park and learnt that they had been built in her honor in 1773. Even then his search had not come to an end. It was only after he had spent several nights digging around the cross that he decided to write to Kit Williams to find out if he was wasting his time there .Williams encouraged him to continue ,and on February 24th 1982 ,he found the treasure. It was worth PS 3000 in the beginning ,but the excitement it had caused since its... Question: What is the most important clue in the story to help Ken Roberts find the hare ? Options: A: Two stone crosses in Ampthill B: Stevenson's Treasure Island C: Katherine of Aragon D: Williams' hometown
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C