西方国家1万例麻醉期间死亡的原因中，完全由麻醉引起的约（）
A.1～2例
B.3～4例
C.5～6例
D.7～8例
E.9～10例
参考答案：E
根据首字母提示填空。
1. I'm sorry to keep you waiting for so many h______.
2. Please remember me to your families with my best w______.
3. What t______ do you go to bed?
4. What time does your school u______ start in a day?
5. Remember to brush your t______ twice a day.
