What happened in the 1970s? ______.A.The US government recommended the amount of food a re

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What happened in the 1970s? ______.

A.The US government recommended the amount of food a restaurant gave to a customer.

B.Health experts persuaded restaurants to serve smaller portions.

C.The United States produced more grain than needed.

D.The American waistline started to expand.

请帮忙给出正确答案和分析,谢谢!

热搜:关于氨基酸代谢错误的论述是_________。