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请在第_____处填上正确答案。 A.messages B.letter C.information D. words

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计算分半信度需要的复本个数和施测次数为:A.1,1B.2,1C.2,2D.1,2

一组测验分数服从正态分布,其平均数为65分,标准差为5分,则分数在60~65之间的人数占总人数的百分比为。 A.15.8%B.34.1%C.50.0%D.68.3%

You must take __ for granted that I will help you. A.it B.that C.this D.its

Many countries face some serious problems of land use, __ result from population growth

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