题型:问答题 简答题 Lawrence Craven, a doctor from the USA, is the author of several published reports, one of which introduced the idea in 1953 ________ aspirin could reduce the risk of heart attacks by thinning blood.A.whenB.whereC.thatD.which 查看答案
题型:问答题 简答题 女,30岁。右下后牙进食嵌塞痛2周,偶有喝冷水疼痛。无自发痛。检查发现右下第一磨牙面深龋洞,冷测反应正常,冷刺激入洞出现一过性敏感,叩痛 (-),去净腐质后洞底无穿髓孔。该患牙应做的治疗是A.双层垫底后充填B.安抚治疗以消除症状C.活髓切断D.直接盖髓E.根管治疗 查看答案