下列不是口腔颌面部感染特征的是（）
A.口腔、颜面及上呼吸道感染，可顺相应淋巴引流途径扩散
B.儿童较成人更易发生腺源性感染
C.口腔颌面部感染可借血液循环扩散至邻近间隙
D."危险三角区"的感染处理不当可造成上呼吸道梗阻
E.口腔颌面部组织抗感染能力较其他组织为强
参考答案：D
解析：口腔颌面部有较多的淋巴引流途径扩散，故A正确。儿童由于淋巴结构不完善，感染可穿破被膜向周围扩散，易发生腺源性感染，故B正确。口腔颌面的血液循环丰富，故可以通过血液扩散至邻近间隙，但是丰富的血液循环也使该部位抗感染的能力相对较强，故C和E正确。危险三角区处的静脉常无瓣膜，容易逆行发生海绵窦血栓性静脉炎，但是不会引起上呼吸道梗阻，D错误。故选D。
The ancient Greeks were very good at making conversations, and the greatest talker of them all was philosopher Socrates. His pupil, Plato, recorded some of his supposed conversations, and we read them in ‘ The dialogues' of Plato. In many classrooms today, Socrates' method of teaching is used. 小题2:____________________ The best talkers appear to have a great interest in and love for their fellow creatures; a curiosity about the world in general; some powers of observation and reflection; respect for their own opinions and tolerance for those of others; and quick thinking. And they talked for the fun of it, not to show off their knowledge. 小题3:____________________ A good voice must have the help of good speech, whose two assistants are clear enunciation (清晰发音)and correct pronunciation. Poor enunciation may suggest to your listeners that you lack consideration, and that you are not especially concerned about their opinion of you. 小题4:___________________ Pronunciation is settled by common agreement of the community or group speaking the particular language or dialect. For standard pronunciation of words, a dictionary is your best friend. The usage of words is somewhat the same as pronunciation. To be accurate in your use of words is very important in your conversation. Dictionaries usually provide the usage of words. So whenever you meet with new words, it is a good idea to look them up in the dictionary. 小题5:____________________ Think of meeting a stranger as a chance to have a good time to talk, to make a friend. Look with a smile directly into the other’s eyes when you are intructed, and shake hands with a firm, friendly clasp. This will give you confidence. Then try to have a smooth and pleasant conversation with him. |