MCQOPTIONS
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| 1. |
Smoking destroys the cilia in the respiratory passage ways. This: |
| A. | Makes it harder to move air in and out of the lungs. |
| B. | Decreases the surface area for respiration. |
| C. | Slows blood flow through lung blood vessels. |
| D. | Makes it harder to keep the lungs clean. |
| Answer» E. | |