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The cultivated land in the U.S. makes up______of the total land, and people who are engaged in farming make up only 2.7% of the
The cultivated land in the U.S. makes up______of the total land, and people who are engaged in farming make up only 2.7% of the
admin
2012-12-01
45
问题
The cultivated land in the U.S. makes up______of the total land, and people who are engaged in farming make up only 2.7% of the total population.
选项
A、21%
B、31%
C、0.41
D、0.51
答案
A
解析
考查美国概况。美国自然资源丰富,发展农业有着得天独厚的条件。气候适宜、降雨充沛、土质肥沃,海拔500米以下的平原占国土面积的55%,有利于农业的机械化耕作和规模经营。美国的耕地面积约占国土总面积的21%。
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