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第555期
Teens Express
Testing the five-second rule
高一
第555期
作者:Kelli Plasket
Aa
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YOU may have seen a friend drop food on the floor, pick it up and eat it, while declaring (宣称):“Five-second rule!” The old adage (俗语) says that food dropped on the floor for five seconds or less is still likely to be clean. But is that true?
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