精品一区二区中文在线,无遮挡h肉动漫在线观看,国产99视频精品免视看9,成全免费高清大全

推薦文檔列表

考研一族英語閱讀模擬練習(xí)之一

時間:2021-09-06 18:19:03 考研英語 我要投稿

考研一族英語閱讀模擬練習(xí)之一

閱讀模擬練習(xí)之一

考研一族英語閱讀模擬練習(xí)之一

  Text 1

  Each year, 1,400 high-school students from more than 40 countries are invited to compete in the prestigious Intel International Science and Engineering Fair (Intel ISEF), the world’s largest precollege science contest. The select group of young scientists is chosen from the several million students who compete in local and regional science fairs throughout the year. Participants compete for $3 million in scholarships and prizes, presenting projects in 15 categories like medicine, biochemistry, computer science and zoology. Earning top honors isn’t the only goal for contestants. Nineteen percent (or 274) of the finalists at the 2005 competition held last month have already begun the process to patent their projects.

  Ammem Abdulrasool, a senior at the Illinois Junior Academy of Science, won top honors at this year’s Intel ISEF for his project, “Prototype for Autonomy: Pathway for the Blind.” He walked away with $70,000 in prize money and a free trip to October’s Nobel Prize ceremony. Abdulrasool developed technology that allows visually impaired individuals to navigate themselves from one location to another by using the Global Positioning System. Individuals wear a half-kilo Walkman-size device, a bracelet on each arm and a pair of earphones. After entering a starting and ending location into a personal digital assistant (PDA), they are guided with verbal commands that tell them when and in what direction to turn. Simultaneously, a bracelet vibrates signaling the correct direction. To test his device, Abdulrasool recruited 36 blind adults and asked them to visit five landmarks in his neighborhood. The navigational tool saved people an average of 26 minutes in travel time and reduced the number of errors (wrong turns and missed locations). “Looking at how hard it was for them to travel and how they were dependent on everyone else motivated me to do something,” he said. Abdulrasool hopes are applying for a patent and then plan to market the product commercially.

  In the fair’s 56-year history, a number of projects have been implemented for commercial use. Michael Nyberg, a 2001 competitor, hoped to reduce the number of West Nile virus infections through acoustics. With a bucket of mosquito larvae and a sound generator, Nyberg discovered that a 24 kHz frequency resonated with the natural frequency of mosquitoes’ internal organs: larvae that absorbed the acoustic energy would explode. His sound-emitting device, Larvasonic, is now sold online (www.larvasonic.com). Tiffany Clark, a 1999 competitor, found evidence that bacteria produced the methane gas found inside coal seams in Wyoming’s Powder River Basin. This suggested that injecting nutrients into coal seams might provide an unlimited supply of natural gas. A Denver-based technology firm is now continuing Clark’s high-school research. And someday soon, blind people around the world may be wearing bracelets that issue GPS commands.

  21. How are young people selected to participate in Intel ISEF?

 。跘] They are pre-university students.

  [B] They must win science competitions in their home countries.

 。跜] They must patent or be about to patent an invention.

 。跠] They are chosen from young people who take part in science competitions.

  22. Which of these is NOT mentioned as an advantage of Abdulrasool’s device?

 。跘] It enables blind people to get from A to B faster.

  [B] It helps them avoid obstacles.

 。跜] It gives information to blind people in more than one way.

 。跠] It is extremely light.

  23. How are Abdulrasool’s invention and those of Michael Nyberg and Tiffany Clark similar?

 。跘] Their inventions all have organic components.

 。跙] They all won the Intel ISEF competition, though in different years.

  [C] They all have, or could have, profitable applications.

 。跠] None of them have patents yet.

  24. How does Tiffany Clark’s idea work?

 。跘] She feeds underground bacteria and they produce natural gas.

  [B] Bacteria eat coal and produce natural gas.

 。跜] Bacteria are injected with coal molecules and produce natural gas.

  [D] Bacteria extract natural gas from coal and are then harvested.

  25. Which of the following statements about the Intel ISEF competition is true?

 。跘] It began in the 1960’s.

 。跙] The biggest prize this year was $3 million.

 。跜] There are 15 prizes in a variety of categories.

  [D] Many participants have patented ideas and inventions.

  Text 2

  Ten years ago, Pierre Omidyar, a software engineer working in California’s Silicon Valley, began thinking about how to use the internet for a trading system in which buyers and sellers could establish a genuine market price. Over a long holiday weekend he wrote the computer code. At first, a trickle of users arrived at his website—including his girlfriend, who traded PEZ candy dispensers. By the end of 1995, several thousand auctions had been completed and interest in eBay was growing. And it grew and grew. From this modest beginning, eBay has become a global giant, with around 150m registered users worldwide who are set to buy and sell goods worth more than $40 billion this year.

主站蜘蛛池模板: 精品一区二区三区在线观看| 欧洲av无码放荡人妇网站| 国产激情久久久久影院| 国产精品自在线拍国产| 深夜视频在线免费| 国产精品VA在线观看无码| 高清不卡毛片免费观看| 欧美日韩亚洲中文字幕二区| 柠檬福利精品视频导航| 国产老肥熟XXXX| 国产老熟女ass| 精品国精品国产自在久国产应用| 日本高清视频www| 女子初尝黑人巨嗷嗷叫| 国产老肥熟xxxx| 国产精品特级毛片一区二区三区| 亚洲国产欧美国产综合一区| 欧美人与禽zoz0性伦交| 青草青草久热精品视频在线观看| 欧美日韩精品久久久免费观看| 日韩欧美在线综合网| 99久热re在线精品99 6热视频| 一区一区三区产品乱码| 伊人久久大香线蕉亚洲| 色综合欧美在线视频区| 国产播放隔着超薄丝袜进入| 欧美日韩不卡合集视频| 国产亚洲日韩在线三区| 夜夜未满十八勿进的爽爽影院| 亚洲免费观看视频| 凹凸国产熟女精品视频| 国产日韩精品一区二区三区在线| 国产精品偷伦视频免费观看了| 国产精品毛片无码| 亚洲 成人 综合 另类 图区| t66y国产原创区| 黑人异族巨大巨大巨粗| 香港三级日本三级a视频| 少妇无码太爽了不卡视频在线看| 精品亚洲成a人在线观看| 97夜夜澡人人双人人人喊|