关于拔除气管插管后即刻或延迟出现的并发症，不正确的是
A．喉痉挛
B．气管扩张
C．胃内容物反流
D．声带麻痹
E．呛咳
参考答案：B
可逆反应H2(g)+I2(g)2HI(g)达到平衡时的标志是[ ]
A．H2、I2、HI的浓度相等
B．1个I-I键断裂的同时，有2个H-I键断裂
C．混合气体的质量不再改变
D．混合气体密度恒定不变
单词拼写。
1. He jumped over the fence, ran across the field, and _______(消失)into the woods.
2. The best ______(方法)to achieve this goal is to unite as many people as possible.
3. It is important to have a positive ________(态度)when we begin to work on every thing.
4. Of course these days you can also get a lot of useful _______(信息)from the Internet.
5. She was probably afraid that her father would say something else that would be _______(令人难堪)to her.
6. Both were ________(热心)about their work, and they had many experiences to share.
7. It's bad ________(行为) for a man to smoke in the public places where smoking is not allowed.
8. The teacher begins his lesson with a _______(描述)of our school.
9. One thing I cannot stand in _______(青少年)today is the fact that they don't like reading.
10. The thief ________(承认) that he had stolen the lady's money.
2HI(g)达到平衡时的标志是[ ]