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Creighton Has Been Working in Construction for Many Years

Question 52

Multiple Choice

Creighton has been working in construction for many years.At first,his co-workers warn him to wear earplugs,but he refuses.Now he can no longer hear sounds at high pitches.Creighton's ____ have been damaged.


A) hair cells
B) conduction bones
C) semicircular canals
D) oval and round windows

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