48. C: Smoking causes lung cancer, which is the number one cancer among men.
49. D: Smoking is also the leading cause of mouth cancer, tongue cancer, and throat cancer.
50. C: Smoking causes one million early deaths in the world every year.
51. B: Smokers breathe smoke out into the air. They breathe *it* out on their children and their wives or husbands.
52. B: Children whose parents smoke have more breathing and lung problems than other children. Women who are married to smokers are more likely to have lung cancer than those married to non-smokers.
uy tín 100% nha^^