2010年广西桂林市中考化学试卷(教师版)
2010年广西桂林市中考化学试卷(教师版)一、选择题(共25小题,每小题2分,满分50分)1.(2分)因为鱼肉含有丰富的( )A.蛋白质B.维生素C.油脂D.糖【微点】生命活动与六大营养素.【思路】只有熟悉六大营养素在食物中的分布和在人体内的作用,才能正确解答本题.【解析】解:由于鱼肉中含有丰富的蛋白质,脂肪的含量较少,对人体的生长发育和健康比较有利。故选:A。【点拨】本题主要考查六大营养素在食物中的分布和在人体内的作用.难度较小.2.(2分)地壳中含量最多的金属元素是( )A.铁B.铝C.硅D.氧【微点】地壳中元素的分布与含量.【思路】根据地壳里各元素的含量由多到少的顺序排列依次是氧,硅...
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