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>> 高等继续教育 / 中级财务会计
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佳题速递：
书法艺术属于（ ）。
审美入门
10、
Unless we spend money to spot and prevent asteroids (小行星)now, one might crash into Earth and destroy life as we know it, say some scientists. Asteroids are bigger versions of the meteoroids (流星)that race across the night sky. Most orbit the sun far from Earth and don‘t threaten us. But there are also thousands of asteroids whose orbits put them on a collision course with Earth. Buy $50 million worth of new telescopes right now. Then spend $10 million a year for the next 25 years to locate most of the space rocks. By the time we spot a fatal one, the scientists say, we‘ll have a way to change its course. Some scientists favor pushing asteroids off course with nuclear weapons. But the cost wouldn‘t be cheap. Is it worth it?Two things experts consider when judging any risk re:1)How likely the event is;and 2)How bad the consequences if the event occurs. Experts think an asteroid big enough to destroy lots of life might strike Earth once every 500, 000 years. Sounds pretty rare—but if one did fall, it would be the end of the world. “If we don‘t take care of these big asteroids, they‘ll take care of us, ”says one scientist. “It‘s that simple. ” The cure, though, might be worse than the disease. Do we really want fleets of nuclear weapons sitting around on Earth?“The world has less to fear from doomsday (毁灭性的)rocks than from a great nuclear fleet set against them, ”said a New York Times article.
1. What does the passage say about asteroids and meteoroids?A) They are heavenly bodies different in composition.
B) They are heavenly bodies similar in nature. 【外语教育&网综合英语（二） 金黄色葡萄球菌可引起下列哪些疾病医学微生物学和免疫学(护理专) 2[简答题]
简述各层次的谈判目标.河南理工大学 4、下列( )参数为空间参数。
A. 施工过程数
B. 施工段数
C. 流水步距
D. 流水节拍土木工程施工技术与组织 求职信即求职者以书面形式向用人单位提出求职请求的文函，但并不是所有单位都要求提供求职信，学生要根据实际情况斟酌。国家开放大学