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题目

What prevents the passing of food into the larynx and respiratory system?A. epiglottisB. esophagusC. tracheaD. vocal cord

What prevents the passing of food into the larynx and respiratory system?

A. epiglottis

B. esophagus

C. trachea

D. vocal cord

题目解答

答案

A. epiglottis

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