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  3. Diet and the Demand for Food The demand for different food products depends on four factors: the number of people in the are

Diet and the Demand for Food The demand for different food products depends on four factors: the number of people in the are

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问题                 Diet and the Demand for Food
    The demand for different food products depends
on four factors: the number of people in the area,【M1】______
their standard of living, and their cultural attitudes.【M2】______
The first two factors are obviously. The third,【M3】______
cultural attitudes, often depends in diet habits and religion.【M4】______
Take attitudes toward diet in the United States, for an example.【M5】______
Changes, preferences, and prices have had an interesting effect
on consumption in the U. S. In 1940, Americans consume【M6】______
19. 4 pounds of butter and margarine per person, and most of it
was butter. Now they eat less 13 pounds, most of it margarine.【M7】______
Before World War II , people in the U. S. averaged 155 pound【M8】______
of wheat flour a year: now they average about 135.
Americans are also eating much few fruit,【M9】______
but they’re eating many more vegetables.
They are eating more chicken and turkey, either.【M10】______
【M1】
选项
答案four--three
解析 (由下文可知，短文讲了三个因素，故将four改为three。)
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