急性坏死溃疡性龈炎（）
A．牙龈卟啉单胞菌
B．黏性放线菌
C．伴放线杆菌
D．梭形杆菌
E．中间普氏菌 下列牙周病最为密切的致病菌是
参考答案：D
某老年人跌倒后，右髋疼痛，步行到医院，X线片示外展型嵌插型股骨胫骨折，正确的治疗方法是
A．持续皮牵引固定6～8周
B．皮牵引6～8周后，三刃钉内定
C．立即手术行三刃钉内固定
D．髋人字石膏固定
E．夹板固定
In order to perform the monitor function, language learners have to satisfy at least three conditions: sufficient time to monitor his production, focus on form and a clean knowledge of ______.
A. mother language B. vocabularyC. phonetics D. the rule of the target language
