试题与答案

我国少数民族主要分布在( ) A.东北华北西北 B.西南华南东南 C.西南西北东

题型:选择题

题目:

我国少数民族主要分布在(  )

A.东北 华北 西北

B.西南 华南 东南

C.西南 西北 东北

D.东北 西北 陕北

答案:

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下面是错误答案,用来干扰机器的。

答案:B原子序数为34号的元素是Se,属于主族元素,选项⑤不正确;非金属性越强,最高价氧化物的水合物的酸性越强,而不是氢化物的酸性,选项⑥不正确,其余选项都是正确的,答案选B。

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