Smoking causes lung cancer, which is the number one cancer among men. Ninety percent of the people who get lung cancer die. Smoking is also the leading cause of mouth cancer, tongue cancer, and throat cancer. Many smokers have heart disease and pneumonia. Smoking causes one million early deaths in the world every year.

Smokers not only harm themselves but also harm others. Smokers breathe smoke out into the air. They breathe it out on their children and their wives or husbands. 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.

We are all aware that smoking is bad. So why do people smoke?

30. The passage is mainly about _____________.

A. the effects of smoking                        B. how to give up smoking

C. the reasons why people smoke                D. the laws to prevent smoking

31. According to the passage, smoking is also the cause of the following diseases EXCEPT _________.

A. lung cancer                B. throat cancer        C. skin cancer                D. mouth cancer

32. The word “it” in the passage refers to _____________.

A. cancer                B. smoke                C. air                        D. breath

33. In the second paragraph, who can be affected by smoking?

A. wives or husbands who don’t smoke        

B. children whose parents smoke

C. women who are married to non-smokers

D. people who talk to smokers

34. The word “disease” is CLOSEST in meaning to _____________.

A. illness                B. health                C. operation                D. strength

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