题目

Mr. Johnson lived in the woods with his wife and children. He owned __61 __farm，which looked almost abandoned.__62 __(lucky)，he also had a cow which produced milk every day. He sold  or exchanged some of the milk in the towns nearby __63__other food and made cheese and butter for the family with what __64__(leave)．The cow was their only means of support，in fact. One day，the cow was eating grass __65__it began to rain heavily. While making great efforts to run away，she __66__(fall) over the hill and died. Then the Johnsons had to make a living __67__the cow. In order to s有关主题知识的归纳错误的是（　　） A、认识元素空气中含量最多的元素氮地壳中含量最多的金属元素铝B、元素与人体健康人体缺铁易引起贫血人体缺碘易造成骨质疏松C、生活常识防CO中毒在边上放一盆清水放在人窒息在久未开启的菜窖中先做“明火实验”，再决定是否进入D、环保与物质的利用减少白色污染使用可降解塑料减少温室效应减少含碳物质的燃烧