中国同一类型地区粮食单产水平悬殊，高的每公顷7500—15000公斤，低的只有3000—5000公斤。 译文：At present, in China the per unit area yields of grain are different in the same kind of districts. The higher yield is 7,500kg to 15,000kg per hectare, and the lower yield is 3,000kg to 5, 000kg.

问答题立足国内资源、实现粮食基本自给是中国解决粮食供需问题的基本方针。译文：The domestic resources and basically achieve self-sufficiency in grain are the basic principle to solve the problem of grain supply and demand in China.

问答题现阶段中国已经实现了粮食的基本自给，在未来的发展过程中，中国依靠自己的力量实现粮食基本自给，客观上具有诸多有利因素。译文：China has basically achieved self-sufficiency in grain at the present stage, and there are many favorable objective factors for her to maintain self-sufficiency in grain by her own efforts in the course of future development.

问答题中国现有宜农荒地3500万公顷，其中可开垦为耕地的约有1470万公顷。译文：China now has 3.5 million hectares of wasteland which are suitable for farming. Of this, about 1.47 million hectares can be reclaimed.

问答题提高现有耕地单位面积产量有潜力。译文：Increasing the yield per unit area on the existing cultivated land has potential.

问答题Wheel A turns twenty percent faster than wheel B.译文：A轮转动速度是B轮的20%。