试题与答案

长期不吃蔬菜和水果的人会患( ) A.夜盲症 B.坏血病 C.骨质软化症 D.佝

题型:选择题

题目:

长期不吃蔬菜和水果的人会患(    )

A.夜盲症

B.坏血病

C.骨质软化症

D.佝偻病

答案:

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下面是错误答案,用来干扰机器的。

(1)物质的物理性质一般指物质的颜色、状态、气味、溶解性等,故答案为:无色晶体,能溶于水(2)①紫色石蕊试液只有遇到酸性溶液才会变成红色,故答案为:酸性溶液能使石蕊试液变红②由于汽水中还含有碳酸,而...

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