[单选题]患者，男，24岁，主诉晨起时枕头上有血迹，牙龈有自发性出血、疼痛及腐败性口臭2天。 最可能的初步诊断是
A.疱疹性龈口炎
B.急性坏死性溃疡性龈炎
C.慢性牙周炎
D.青春期龈炎
E.急性龈乳头炎

Maurice Porter: I propose to ban tobacco. It would be done in three stages. First tobacco taxes should be sharply increased and tobacco goods would be banned. Then smoking in public places would be forbidden, and all the tobacco companies would be nationalized by the Government. Finally, all the factories would be closed and the sales of tobacco would be a crime. Banning of tobacco becomes an urgent task as the smokers are becoming younger and younger. I recently found that there were quite a few young girls smoking in the street, waiting for their buses or just getting around. We should be responsible for our people’s health problem. We should be responsible for our younger generation.Peter Stone: Let’s look at this from an economic point of view. Mr. Potter’s plan to nationalize the tobacco companies would cost the Government a lot of money. If the factories were closed, all the money would be wasted. The Government would lose all th