[填空题]Sensitive teeth may indicate a serious problem that may need prompt care by a dentist.

[填空题]Sensitive teeth may indicate a serious problem that may need prompt care by a dentist.

[填空题]If the situation goes worse, a serious problem may come up.

[单项选择] Premature Smoking: A Serious Problem The third report on smoking and health from the Royal College of Physicians, which was published this month, contains important new sections on the smoking habits of children and the possible effect, on their future health. These include a twenty fold in the increase in the risk of lung cancer in heavy smokers and an increase of about three and a half times in the risk of dying from coronary(冠状的) heart disease; chronic(慢性的) oronchitis (支气管炎) and emphysema(肺气肿) are also much commoner. Teachers play an important part in determining the attitude of children to smoking, whether or not the children start to smoke, and in providing knowledge about the consequences of smoking. Whenever I see children of school age openly smoking in public, I wonder whether they really understand what they are doing. Probably most do not. I at least know that my clinical practice in lung disease will not be short of patients for the res
A. Children should not be allowed to smoke in school.
B. Their teacher should be forbidden to smoke.
C. See that the children never start smoking.
D. Children who smoke should be severely punished.