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单项选择题

Overproduced corn in American farms has been converted to ______.

A．feed cattle, pigs and poultry
B．manufacture automobile components
C．make artificial beef, pork, and chicken
D．become high-fructose low fat products
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单项选择题Which of the following is true according to the passage

A．Americans' standard of living is relatively low in the 1970s.
B．Americans are on average consuming 200 calories every day.
C．Farms are responsible for American overconsumption of calories.
D．Diabetes is the unavoidable result of Americans' consuming corn.

单项选择题Which of the following best summarizes the passage

A．Overproduction of corn products leads to overweight.
B．Corn is the most popular portable product in America.
C．Corn processing is a powerful industrial logic at work.
D．A balanced diet of corn is beneficial to one's life span.