用治疗评分系统（TISS）或APACHEⅡ评分系统进行评分时，积分越高，表示（）。
参考答案：病情越重
We were two hours late that day, which was due to the _________.
A．crowded traffic
B．crowded traffics
C．busy traffic
D．busy traffics
口腔颌面部感染的主要途径是
A．腺源性B．损伤性C．血源性D．牙源性E．医源性
rowded traffic