2011年广西桂林市中考化学试卷
2011年广西桂林市中考化学试卷一、选择题(本题包括25小题,每小题2分,共50分.每小题只有一个选项符合题意)请将答案填在答题卡上1.(2分)下列环境问题与二氧化硫的排放有关的是( )A.酸雨B.沙尘暴C.白色污染D.温室效应2.(2分)自然界中植物的光合作用需要消耗空气中的( )A.氮气B.氧气C.二氧化碳D.稀有气体3.(2分)生活中最常见的含钠元素的化合物是( )A.NaOHB.NaClC.Na2CO3D.NaHCO34.(2分)小红不爱吃水果蔬菜,从营养均衡的角度评价,小红最有可能缺乏( )A.蛋白质B.糖类C.油脂D.维生素5.(2分)下列图标中,在商场、医院、车站等公共场...
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