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问题 单项选择题

开展窝沟封闭防龋措施的临床操作过程中

酸蚀牙面步骤中不应将酸蚀剂

A．接触牙面上

B．溢到软组织

C．放在乳牙上

D．放到恒牙上

E．蘸到细毛刷上

答案

参考答案：B

填空题

一个数除以8，余数最大是______，最小是______．
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选择题

The Shanghai Expo Site covers a total area of 5.28 sq km, ______12 pavilion groups, of _____ Zone A hosts China Pavilion, and other national Pavilions for Asian countries except Southeast Asian ones.

A．included, who

B．including, which

C．included, which

D．including, what
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