百合固金汤组成中含有的药物是（）
A.生地、枳壳
B.玄参、桔梗
C.杏仁、胡麻
D.麦冬、生姜
E.白芍、阿胶
参考答案：B
根据句意及首字母提示补全单词，完成句子。
1. Sleeping late in the morning is an unhealthy l_______.
2. I've got a bad toothache. I want to see a d_______.
3. What do you t_______ of the transportation in our city?
4. I live next to the school. I w_______ to school every day.
5. If you walk there, it will take you twenty m_______.
引起龋病发生的病源因素为
A．致龋细菌
B．易感牙面
C．糖类食物
D．一定时间
E．唾液变化
