桩在牙槽骨内的长度应大于根在牙槽骨内总长度的
A．1/4B．1/3C．2/3D．1/5E．1/2
参考答案：E
— ?
—Much better.
A. How are you feeling today B. What’s wrong with you C. Could I speak to Mr. Smith
清真寺标志性建筑是( )。
A．经堂 B．望月楼C．礼拜殿 D．宣礼楼
