【单选题】【消耗次数：1】
Those gifts o rare books that were given t us were deeply _____.
①
appreciated
②
approved
③
appealed
④
applied
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相关题目
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39. A survey was carried out on the death rate of those who were infected by SARS, ________were surprising.
①
asresults
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thehundred
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By nine o’clock I ____ that my guests were not coming.?
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You never told us why you were one hour late for the last meeting, ____?
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The residents, _____had been damaged by the fire, were given help by the Red Cross.
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【单选题】
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随机题目
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下列有关标准差的说法中错误的是（）。
①
样本标准差用S表示
②
标准差越大，数据的集中趋势越小
③
方差的算术平方根称为标准差
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标准差的量纲与原变量一致
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【单选题】
有关离散趋势的指标意义，下列叙述正确的是（）。
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观测值越大，说明个体间差别越大
②
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各科患者数/患者总数
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各科病死数/病死总数
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各科病死数/各科患者数
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