If you make the decision to quit, the cilia in your lungs are one of the first parts of your body to heal. These hair-like projections wave back and forth like a brush as air moves in and out of your lungs. They help your body...
Well, we weren't as smart as we thought we were. As we started using antibiotics everywhere -- in hospitals, to treat and prevent; at home, for simple colds; on farms, to keep animals healthy -- the bacteria evolved. In theonslaughtof antibiotics ...
A. common colds are more severe than other plagues B. viruses are the factors causing common colds C. common colds are full of myth D. the idea that cold leads to colds doesn’t stand up 查看完整题目与答案 Passage 2 Come on--Everybody's doing it. Thatwhispered message, hal...