Making Inferences and Drawing Conclusions Question
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The toothbrush as we know it today was not invented until 1938. However, early forms of the toothbrush have been in existence since 3000 BC. Ancient civilizations used a "chew stick," which was a thin twig with a frayed end. These 'chew sticks' were rubbed against the teeth.
Why were early toothbrushes most likely called "chew sticks"?
- because people chewed on them to help clean the teeth
- because they were chewed on by animals
- because they tasted better when chewed
- because people chewed them after using them