题目内容
The largest earthquake (magnitude里氏9.5 ) of the 20th century happened on May 22, 1960 off the coast of South Central Chile.It generated (生成) one of the most destructive Pacific-wide tsunamis (海啸). Near thegenerating area, both the earthquake and the tsunami were very much destructive, particularly in the coastal area from Concepcion to the south end of Isla Chiloe. The largest tsunami damage occurred at Isla Chiloe-the coastal area closest to the epicenter(震中). Huge tsunami waves measuring as high as 25 meters arrived within 10 to 15 minutes after the earthquake, killing at least two hundred people, sinking all the boats, and flooding half a kilometer inland.There was large damage and loss of life at Concepcion, Chile’s top industrial city. Near the city of Valdivia, the earthquake and following aftershocks generated landslides which killed 18 people. At the port city of Valparaiso, a city of 200,000, many buildings collapsed. A total of 130,000 houses were destroyed--one in every three in the earthquake zone and nearly 2,000,000 people were left homeless.Total damage losses, including to agriculture and to industry, were estimated(估计) to be over a half billion dollars. The total number of deaths related with both the tsunami and the earthquake was never found accurately for the region. Estimates of deaths reached between 490 to 5,7002 with no distinction(差别) as to how many deaths were caused by the earthquake and how many were caused by the tsunami. However, it is believed that most of the deaths in Chile were caused by the tsunami. What is the total number of deaths in the earthquake（）
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Java语言的循环语句包括for语句、do-while语句和while语句，先循环后判断，循环至少被执行一次的是______。
Questions 52 to 56 are based on the following passage. In 1951, Time magazine set out to paint a portrait of the nation’s youth, those born into the Great Depression. It doomed them as the Silent Generation, and a generally dull lot: cautious and obedient, uninterested in striking out in new directions or shaping the great issues of the day—the outwardly efficient types whose inner agonies the novel "Revolutionary Road" would analyze a decade later. "Youth’s ambitions have shrunk," the magazine declared. "Few youngsters today want to mine diamonds in South Africa, ranch in Paraguay, climb Mount Everest, find a cure for cancer, sail around the world or build an industrial empire. Some would like to own a small, independent business, but most want a good job with a big firm, and with it, a kind of suburban idyll (田园活)." The young soldier "lacks flame," students were "docile notetakers." And the young writer’s talent "sometimes turns out to be nothing more than a byproduct of his nervous disposition." "The best thing that can be said for American youth, in or out of uniform, is that it has learned that it must try to make the best of a bad and difficult job, whether that job is life, war, or both," Time concluded. "The generation which has been called the oldest young generation in the world has achieved a certain maturity." Today we are in a recession the depth and duration of which are unknown; Friday’s job loss figures were just the latest suggestion that it could well be prolonged and profound rather than shorter and shallower. So what of the youth shaped by what some are already calling the Great Recession Will a publication looking back from 2030 damn them with such faint praise Will they marry, younger，be satisfied with stable but less exciting jobs Will their children mock them for reusing tea bags and counting pennies as if this paycheck were the last At the very least, they will deal with tremendous instability, just as their Depression forebears did. "The ’30s challenged the whole idea of the American dream, the idea of open economic possibilities,’’ said Morris Dickstein, an English professor at the Graduate Center of the City University of New York. "The version you get of that today is the loss of confidence on the part of both parent and children that life in the next generation will inevitably be better." How today’s young will be affected 10, 20 or 40 years on will depend on many things. If history. is any guide, what will matter most is where this recession generation is in the historical process. By commenting that "students were ’docile notetakers’", the Time magazine suggested that students should have been ______.
根据功能不同。8086的标志位可分为（）标志和状态标志。
一个果蝇家系，对隐性体细胞等位基因a、b、c是纯合的，这3个基因以a、b、c的顺序连锁。将这种雌性果蝇与野生型雄性果蝇杂交，得到F1，再让F1的杂合子之间相互杂交，得到F2的结果如下： + + + 1365 a + + 47 a b c 365 + b c 44 a b + 87 a + c 5 + + c 84 + b + 4 请问： (1)基因a与基因b，基因b与基因c，基因a与基因c它们之间的重组频率各是多少 (2)双交换与并发系数是多少 (3)作出连锁图。
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