______    1.    Cigarettes release carcinogens which cause many forms of
                        cancer.

______     2.    The least harmful compound in cigarettes is tar.

______     3.    Tar from cigarettes is the main cause of emphysema.

______     4.    Carcinogens are the only harmful substance in cigarettes.

______     5.    The organ most affected by smoke is the lungs.

______     6.    Bronchitis and emphysema are chronic diseases of the lungs
                         associated with smoking.

______     7.    The effects of bronchitis are more life-threatening than
                        those of emphysema.

______     8.    Only smokers can get emphysema.

______     9.    The carcinogens in cigarette smoke can cause cancer in
                        the lungs, nose, lips, mouth, tongue, throat, and esophagus.

______    10.    Smoking damages the heart and cardiovascular system.