In the A, B, C, D and F grading system, the first four letters are typically considered passing grades.
在 A、B、C、D 和 F 评分体系中，前四个字母通常被认为是及格。
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As it does for peanuts and other foods that can cause reactions, the F. D. A. already requires manufacturers to disclose on food labels the presence of artificial colorings.
The bill would give the F. D. A. new powers to enforce disease-prevention plans on food facilities, trace the source of contaminated foods quickly, and order mandatory recalls.