Dvstonia
参考答案：
肌张力障碍(dystonia)：是指主动肌与拮抗肌收缩不协调或过度收缩引起肢体张力障碍的异常动作和姿势。
2g H2和CO的混合气体与30gO2混合后，在密闭容器中完全燃烧，再冷却至室温，测知容器中混合气体的质量为23g，反应中氧气有剩余，求：
（1）原混合气体中H2的质量；
（2）反应后混合气体中各气体的质量．
用不定式完成下列句子。
1. Have you decided ________ (怎样度假).
2. It is dangerous ________ (玩火).
3. She was the first woman ________ (环球飞行的).
4. The boy was made ________ (重复他自己的故事).
5. The old lady looked at the children ________ (穿过马路).
6. It took me much time ________ (算出这些难题) yesterday.
7. The boss made the workers ________ (一天工作十小时).
8. I don't know ________ (在会上说什么).
9. Can you tell me ________ (在哪里能买到这本书)?
10.________ (在何时何地召开这会议) hasn't been decided yet.
