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问题 单项选择题 共用题干题

患儿，9岁，右下后牙肿痛。检查：右下第二乳磨牙冠大部分破坏，龋洞较深，叩诊（+），松动Ⅱ度。颊侧牙龈处有0.5mm×0.5mm脓肿。X线片示：牙根吸收1／3，根分歧有低密度影。右下第二前磨牙牙根形成2／3。

如果治疗后，右下第二乳磨牙仍然松动且X线发现，右下第二前磨牙牙胚牙囊骨壁有破坏，应作的处理是（）

A.开放，定期换药

B.完善根管治疗

C.拔除，做功能矫治器

D.拔除，不需要做保持器

E.拔除，做保持器

答案

参考答案：D

填空题

首字母填空。

     One day the sun and the wind had a quarrel (争吵). The sun said he was s__1__ than the wind. And

the wind said he was stronger than the sun. Just then they saw a man walking down below, w__2__ a

hat and a coat on. The sun said, "Let's see who can make the man t__3__ off his hat and the coat. If you

can do that m__4__ quickly than I, then you are the stronger."

     "All right," said the wind, "I'll try f__5__." So the wind began to blow. But the h__6__ he blew, the

tighter the man h__7__ his hat and coat. The wind could not make him take them off.

     Then the sun t__8__. It shone quietly. Soon the man took off his hat and wiped his forehead (前额).

The sun began to s__9__ a little brighter, and the man took off his coat. It shone harder still, and the man

began to take off his shirt. Then the wind said to the sun, "That's e_10__. You are stronger than I."
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单项选择题

在质量控制中，系统地整理分析某个质量问题与其产生原因之间的关系可采用（）。

A．排列图法

B．因果分析图法

C．直方图法

D．控制图法
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