单词：payability
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169 布什对导弹防御试验结果感到满意 Bush Pleased With Missile Test Results Paula Wolfson Washington 15 Jul 2001 19:08 UTC President Bush's hopes for a missile defense system got a big 1)
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Scientists Testing Space Propulsion by Light 科学家测试太阳能动力 Can the sun provide power for a spaceship to travel to the edge of our solar system? The answer may come from a small satellite. A Delta V rocket carried the satellite into s
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By Carol Pearson Washington 18 November 2009 According to a new task force report, most women should start mammograms at age 50 rather than 40 as previously recommended A U.S. government task force has released new guidelines on how often women shou
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China's new Rocket Force has begun its first military drill of the new year. The simulations were conducted by two elite teams, selected from the People's Liberation Army. A test of weaponry and intelligence. Elite soldiers were split into a red team
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Why I Take College English Test Band 6 为什么要考四六级： (a) Some people consider that it is unnecessary to take College English Test Band 6 (CET-6). One reason they cite is that most schools set CET-4 as the main requirement. Another reaso
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An independent panel of U.S. health experts is recommending that all Americans between the ages of 15 and 65 be routinely screened for HIV, the virus that causes AIDS. The HIV test would not be mandatory. But experts hope more widespread testing migh
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