问题
单项选择题
男性，35岁。诉刷牙和咬硬物时牙出血 3个月。有时口腔有异味。口腔检查：上下前牙唇侧牙龈缘红肿肥厚，龈 * * 呈球状增生，菌斑指数平均2，牙石指数2。探诊牙龈出血。
为明确诊断下列哪项辅助检查不需要
A．探查附着水平位置
B．牙松动度检查
C．X线片检查牙槽骨吸收情况
D．探查牙周袋或龈袋深度
E．上下前牙牙髓活力电测验
答案
参考答案：E
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男性，35岁。诉刷牙和咬硬物时牙出血 3个月。有时口腔有异味。口腔检查：上下前牙唇侧牙龈缘红肿肥厚，龈 * * 呈球状增生，菌斑指数平均2，牙石指数2。探诊牙龈出血。
为明确诊断下列哪项辅助检查不需要
A．探查附着水平位置
B．牙松动度检查
C．X线片检查牙槽骨吸收情况
D．探查牙周袋或龈袋深度
E．上下前牙牙髓活力电测验
参考答案：E
Passage Three
In the author’s opinion, ______.
A．learning plays an important part in most aspects of a child’s development and change
B．there are hardly any principles of learning which are generally accepted
C．a child never learns anything unless he has some need or desire for it
D．a child should not be rewarded until he has learned a response