812. What are the principal farm products in this area? 这个地区的主要农产品是什么？ 

813. The ground around here is stony and not very good for farming. 这儿周围的土地多地块，因而不太适于耕种。 814. Farmers plow their fields and sow in spring. 农民在春天犁地播种。 

815. Milk, butter and cheese are shipped here from the dairy farms. 牛奶、黄油和奶酪都是从各个制酪场运到这里来的。 

816. On many farms you will find cows and chickens. 在许多农场你都会看到奶牛和鸡。 

817. My father has a cow and he gets up early to do the milking every morning. 我的父亲养了一头奶牛，他每天早上很早起床去挤奶。 

818. They had to cut down a lot of trees to make room for farming. 为了腾出地方开辟农场，只好伐倒很多树木。 

819. Many modern machines have revolutionized farming. 许多现代机器革新了耕作方法。 

820. Is it true that there are many factories for making cloth in the United Kingdom? 在英国有很多纺织工厂，这是真的吗？ 

821. Employing child labor is forbidden in the United States. 美国禁止雇用童工。 

823. The manufacturing of automobiles is a major industry in Detroit. 汽车制造是底特律的主要工业。 

824. If you work in a factory, you usually have to punch a clock. 如果你在工厂工作，你就要在上下班记时卡上打孔。 

825. Is meat packing a big country in your state? 在你们州，肉类加工是否算一门大型工业？