下列哪项不是静脉麻醉的优点()
A.对呼吸道无刺激
B.对空气无污染
C.麻醉深浅容易控制
D.药物选择多,有多种配伍
E.操作较方便
参考答案:C
根据句意填空。
1. They are our ___ (票).
2. Joy loves ___ (看) books at home.
3. The boy ___ (离开) the beach and goes home.
4. I'm ___ (兴奋) about the good news.
5. What time does Jack ___ (get) up?
6. Mr. Johnson ___ (arrive) at the school at 6:30 in the morning every day.
7. Let me ___ (sing) a French song.
一切事物的形成是有动力因的。