问答题

到2000年使科技进步对农业的贡献率提高到60%。 译文：By 2000 the contribution rate of science and technology to agriculture will increase by 60 percent.

【参考答案】

By 2000 the contribution rate of science and technology to a......

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每公顷粮食产量可以提高1500公斤以上。译文：The grain output per hectare can be increased more than 1500kg.
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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.
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