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第566期
SUPER SCIENCE
Is it ok to eat?
小学
第566期
作者:teens
Aa
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掉到地上的食物还能吃吗?
Oops! A piece of candy falls on the floor. Can you still eat it? In many countries, people follow the “5-second (秒) rule”. Food is okay to eat if you pick it up in five seconds or less. But is that true?
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