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Agricultural machines are used to till soil and to plant, cultivate and harvest crops. Since ancient times, when people first began cultivating plants, they have used tools to help them in growing and harvesting crops. They used pointed tools to dig and keep soil loosened and sharp knife-like objects for harvesting ripened crops. Modifications of these early implements are still used in gardening such as spade, hoe, rake and trowel and larger implements such as ploughs and larger rakes that are drawn by humans, animals or simple machines.

Modern machinery is used extensively in Western Europe, Australia, the United States, the Russian Federation and Canada.

Modern large agricultural implements are usually powered by diesel- and petrol-fueled internal combustion engines. The most important implement of modern agriculture is tractor. It provides locomotion for many other implements. The power shafts of tractors can also be set up to drive belts that operate equipment such as feed grinders, pumps and electric power generators. Small implements such as portable irrigators may be powered by individual motors.

Ответьте на вопросы к тексту.

1.What are agricultural machines used for?

2.What countries have a highly developed agriculture?

3.What engines power modern agricultural implements?

4.What implement of modern agriculture is the most important one? Why?

5.What tools are used in gardening?

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