Edward: I've just quit smoking, but I seem to be coughing more now than before.
Jill: That's normal. Your smoking has destroyed the cilia in your lungs, which act like little brooms for cleaning. Coughing is your body's way of restoring the cilia so they can sweep out the nicotine accumulated.
Edward: ------------- .
Jill: Exactly, it's a perfectly normal bodily response.
A. I didn't know it would be so difficult to quit smoking.
B. Our bronchial tubes are coated with mucus, which traps germs and dirt.
C. That's similar to the way our body reacts to foreign objects.
D. That's like doing a lot of cleaning in a house that hasn't been cleaned for a long time.
E. I should consult a specialist about this disorder.