下面是王小莉同学用连线的方式对某一主题知识进行归纳的情况，其中有错误的一组是[ ]
A. 性质与用途
活性炭有吸附性--作净水剂
氢气有还原性--冶炼金属
乙醇有可燃性--用作燃料
B.安全常识
溶洞探险--须做灯火实验
煤气泄露--严禁火种
稀释浓硫酸--水倒入浓硫酸中
C. 元素与人体健康
人体缺碘--甲状腺肿大
人体缺钙--易患佝偻病
人体缺铁--易患贫血症
D. 环保与物质的利用
减少酸雨的发生--使用新型能源
减少汽车尾气污染--使用乙醇汽油
减少水污染--使用无磷洗衣粉
答案：B
Waste can be seen everywhere in the school. Some students ask for more food 26 they can eat and others often forget 27 the light when they leave the classroom. Waste can 28 a lot of problems. Although China is rich 29 some resources(资源), we are short for others, for example, fresh water. It is said that we will have 30 coal or oil to use in 100 years. So if we go on 31 our resources, what can we use in the future? Think about it. In our daily life, we can do 32 things to stop waste, for example, turn off the water taps when we finish 33 it, try not to throw so much rubbish, and so on. Little by little, 34 will be changed. Waste can stopped one day if we do 35 best. I hope we can.
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