问题
选择题
23．_______the teacher behind me, I didn’t have to worry. He was sure to lend me a hand.
A．Because
B．With
C．As
D．Because of
答案
答案：B
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23．_______the teacher behind me, I didn’t have to worry. He was sure to lend me a hand.
A．Because
B．With
C．As
D．Because of
答案：B
缺失，要求固定义齿修复。口腔检查：
不松，活髓，无龋损。缺隙大小正常，牙槽嵴无特殊。为该患者实施了