问题
单项选择题 A1型题
预防放线菌所致龋齿及牙周病的方法不正确的是（）。
A.注意口腔卫生
B.隔离病人以防传染
C.牙病及早修补
D.对病人应进行外科清创
E.大剂量青霉素较长时间治疗
答案
参考答案：B
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预防放线菌所致龋齿及牙周病的方法不正确的是（）。
A.注意口腔卫生
B.隔离病人以防传染
C.牙病及早修补
D.对病人应进行外科清创
E.大剂量青霉素较长时间治疗
参考答案：B
A．(A) Children should be responsible for most of the fire deaths in America.
B．(B) Adults load the houses with too much stuff, which is easy to catch fire.
C．(C) Nineteen percent of the fires are attributed to children playing with matches.
D．(D) Adults should exercise more and stricter precautions against fires.