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Agriculture is playing an important part in the world. Now let’s have a look at some different methods of agriculture(农业).

Traditional Agriculture

Most Canadian farmers focus on high productivity from a few main products, such as beef cattle, wheat crops, or greenhouse produce. 1.. Crop rotation(轮流耕作)kills certain pests(害虫)and keeps the land rich. In fact, traditional agriculture is main farming.

2.

It is growing popular. Farmers who focus on protecting the environment believe that a successful organic system begins with a healthy soil that develops healthy plants, farm animals and people. Despite the higher costs of labor, 1.7% of Canadian farms were proved organic in 2009.

The Natural Solution

It is fro natural insect(昆虫)control. A bag is used to ship certain kinds of insects from the supplier to an organic farmer.  3. . This method has no influence on a crop’s nutritional value.

Genetic(基因的)Engineering

Farmers decide to grow engineered crops for many reasons.4.. Genetically engineered crops account for most of the corn, and soybean plantings in Canada and the United States.

Technology Use Agreement

5.. One requirement is that the farmer shouldn’t keep seeds(种子)from the present year’s crop for planting in the following season.

A. Organic Agriculture

B. Canadian Inorganic Agriculture

C. Farmers who want to buy special seeds must sign an agreement with the seed supplier.

D. People in Canada and the United States are crazy about growing plants and raising animals.

E. Farmers avoid chemicals with natural methods, such as using insects to attack agricultural pests

F. They also grow additional crops or raise different farm animals, although not as a primary resource

G. The reasons include increased production and the convenient management of insects, diseases and wild grass.

高一英语七选五中等难度题

少年,再来一题如何?
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