第35题: [单项选择]上牙槽后神经口内注射法的进针深度约为() A. 0.5cm B. 1cm C. 2cm D. 3cm E. 4cm 参考答案:C 答案解析:上牙槽后神经口内注射时,患者采取坐位,头微后仰,上颌牙合平面与地平面成45°,注射针与上颌牙的长轴成45°,向上后内方刺入,进针时针尖沿着上颌结节弧形表面滑动,深约2cm
第37题: [单项选择]The marketing think-tank believes that the next ten years will see an enormous ()in travel and other leisure-related industries. A. expand B. expansive C. expansion D. expansively 参考答案:C 答案解析: