catti实务模拟题附答案(共3页).doc
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1、精选优质文档-倾情为你奉上第1题:填空题:The importance of agriculture cannot be overstated. More than 50 percent of the worlds labor force is employed in agriculture. The distribution in the early 1980s ranged from 67 percent of those employed in Africa to less than 5 percent in North America. In Western Europe, the f
2、igure was about 16 percent; in Eastern Europe and the Soviet Union, about 32 percent; and in Asia, about 68 percent. Farm size varies widely from region to region. Recently the average for Canadian farms was about 186 ha (about 460 acres) per farm, and for U.S. farms, about 175 ha (about 432 acres).
3、 The average size of a single landholding in the Philippines, however, may be somewhat less than 3.6 ha (less than 9 acres), and in Indonesia, a little less than 1.2 ha (less than 3 acres). Size also depends on the purpose of the farm. Commercial farming, or production for cash, is usually done on l
4、arge holdings. The plantations of Latin America are large, privately owned estates worked by tenant labor. Single-crop plantations produce tea, rubber, cocoa. Wheat farms are most efficient when they comprise some thousands of hectares and can be worked by teams of people and machines. Australian sh
5、eep stations and other livestock farms must be large to provide grazing for thousands of animals. Individual subsistence farms or small-family mixed-farm operations are decreasing in number in developed countries but are still numerous in the developing countries of Africa and Asia. A back-to-the-la
6、nd movement in the U.S. reversed the decline of small farms in New England and Alaska in the decade from 1970 to 1980. The conditions that determine what will be raised in an area include climate, water supply, and terrain. Over the 10,000 years since agriculture began to be developed, peoples every
7、where have discovered the food value of wild plants and animals and domesticated and bred them. The most important are cereals such as wheat, rice, barley, corn and rye. Agricultural income is also derived from non-food crops such as rubber, fiber plants, tobacco, and oilseeds used in synthetic chem
8、ical compounds. Money is also derived from raising animals for pelt. Much of the foreign exchange earned by a country may be derived from a single commodity; for example, Sri Lanka depends on tea, Denmark specializes in dairy products, Australia in wool, and New Zealand and Argentina in meat product
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