It’s a Christmas tradition that’s more than half a century old. And it happened completely by accident. It started in 1955, when a local Sears store in Colorado Springs, Colorado printed an ad, which included a spedial phone mumber kids could call to know where Santa’s sleigh was at any given moment. Unfortunately, someone made a mistake in printing the phone mumber and kids were calling the wrong line. A Colonel(上校) named Henry Shoup began answering his phong at what would become NORAD, the North American Aerospace Defence Command. At first, he thought it was a error of one caller. But as the phone ketp ringing and tiny voices kept asking about Santa, Shoup realized he couldn’t disappoint them. So he told the staff to issue updates to any one asking about the location of Santa. The wrong turned into a custom of the holiday and kept growing in popularity, and NORAD finally decided to make it permanent. It’s become a holiday favourite ever since, adapting to whatever new technology has come along since. In the early days, it was a phone line. Then in the 60s, NORAD put out a special series of “reports” that was played on hundreds of radio stations across North America, broadcasting the Jolly Old Elf ’s exact position on Christmas Eve. Think of it as kind of an early GPS without the computer gear. Finally ,came the Internet and NORAD has now transferred its annual watch onto the Web, with a site devoted to keeping tabs on the most famous journey in the world—what you might call the real amazing race, an around-the-world mission that has to be finished within 24hours. This year’s entry allows kids to track Santa in 3Dusing Google Earth and play s at the North Pole using the Kids Countdown Section, and it even offers Santa Cams which are only operational on the night before Christmas. 36.Why did children keep calling Henry Shoup? A.Because they wanted to play a joke on him. B. Because they wanted to amuse him. C.Because he knew where Santa exactly was. D.Because they wanted to know where Santa’s sleigh was. 37.What did Colonel Henry Shoup do when more and more children kept calling? A.He became annoyed and decided to tell them the truth. B.He became excited and jioned them in searching Santa. C.He thought quickly and took it seriously to satisfy their needs. D.He laughed at them and took no notice of their calls. 38.What does “Jolly Old Elf” in Paragraph 6 most probably refer to? A.Santa Claus. B.Colonel Henry Shoup. C.NOARD. D.The staff in Henry Shoup’s charge. 39.According to the passage, how did people learn about the Jolly Old Elf’s exact position in the 1960s? A.By calling a special phone mumber. B.By listening to a special series of reports over the radio. C.With the help of a kind of early GPS. D.By scanning the spedial column in the newspaper. 40.The passage mainly tells us . A.an old favorite holiday that develops along with new technology B.50-year-old tracking Santa tradition that started by accident C.a real amazing race, an around-the-world mission within 24 hours D.a Colonel and the North American Aerospace Defence Command