问题
单项选择题
残疾人最主要的口腔疾病是
A．牙齿缺失
B．咀嚼和吞咽困难
C．颌面外伤
D．语言功能障碍
E．龋病和牙周病
答案
参考答案：E
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残疾人最主要的口腔疾病是
A．牙齿缺失
B．咀嚼和吞咽困难
C．颌面外伤
D．语言功能障碍
E．龋病和牙周病
参考答案：E
| 用所给的词或短语的适当形式填空。 | |
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