保持口腔清洁，防止口腔炎、溃疡的发生。每天用生理盐水嗽口（）次，经常喂些温开水，以清洁口腔。
A、1-2
B、2-3
C、3-4
D、4-5
参考答案：A
按要求完成句子。
l. The twin brothers usually walk to school. (改为同义句)
The twin brothers usually go to school ______.
2. It takes me five minutes to get there. (对面线部分提问)
______ ______ does it take you to get there?
3. " Where's the bus station?" he asked me. (改为宾语从句 )
He asked me ______ ______ ______ ______ ______.
4. Allan will go back to England by plane next month . (对划线部分提问 )
______ will Allan go back to England next month?
男，23岁，2年前无明显诱因下出现右腰腿部疼痛，呈阵发性钝痛，根据所提供图像，最可能的诊断是（）
A.脊膜瘤
B.神经鞘瘤
C.神经纤维瘤
D.淋巴瘤
E.胶质瘤
