急性牙髓炎需要与以下哪种情况进行鉴别诊断
A．慢性闭锁性牙髓炎
B．慢性溃疡性牙髓炎
C．急性上颌窦炎
D．慢性增生性牙髓炎
E．牙周脓肿
参考答案：C
_________ much I dislike the idea of begging in the street, we should still show consideration for those who are in difficult situations.
A．However
B．How
C．Whatever
D．No matter
肺结核病人服用两种以上抗结核药物的最主要的原因是
A．增加病人耐受性
B．减少药物的副作用
C．缩短疗程
D．延缓耐药性的产生
E．减少用药的剂量
