人们所食用的纳绝大部分来自于包装、加工和饭店食品。 5. C 短文的倒数第二段说。

第五篇 U.S. Eat Too Much Salt

rais their risk for high blood pressure, Peopl in the Unite State consum more than twice the recommend amount1 of salt. heart attack and strokes,govern health expert said on Thursday.

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