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对于不等组距式变量数列，通常按次数密度(频数密度)绘制直方图以表示其分布。()
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Who were the majority in the people trapped in the wreekage？
听力原文： China's automobile revolution is accelerating; (8) despite efforts by the government to slow what many economists believe is an overheating of its economy. China is the fastest growing ear market in the world, and sales next year are expected to climb 20 percent from last year. Meanwhile, the world's automakers have announced they will launch massive expansion projects in China.
In recent months, banks have started to tighten their lending criteria, in part a response to what analysts say are the government's efforts to stop China's rapidly growing economy from overheating, but ear sales are skyrocketing, with many Chinese using their savings to purchase new cars.
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一览表是在一张表上登记一个调查单位。()
A．Oprah Winfrey has a distinguished family background.B．Oprah Winfrey is frank and genu
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