哪种药物对心房颤动无效（） ["奎尼丁","地高辛","普萘洛尔","胺碘酮","利多卡因"]
血液的生成与何脏关系最密切（） ["肺","心","肝","脾","肾"]
拔除下颌第一磨牙应采用的阻滞麻醉方法是（）。 ["下牙槽神经","下牙槽神经、舌神经","下牙槽神经、颊长神经","下牙槽神经、舌神经、额神经","下牙槽神经、舌神经、颊长神经"]
下列关于五脏与血液关系的叙述，错误的是（） ["肝主藏血","脾主统血","肾精化生血","肺气助心行血","心调节血流量"]
上牙槽后神经阻滞麻醉注射法，注射针与上颌牙的长轴成45°，向何方向刺入，进针时针尖沿着上颌结节弧形表面滑动，深约2cm（）。 ["上后外","上前内","上后内","上前外","平后内"]
简述教学的特点。
