已知反应C2H6（气）+2Cl2（气）
C2H4Cl2（液体，不溶于水）+2HCl（气），是农药生产及有机合成工业中的重要反应。为了从上述反应的产物中获得副产品盐酸，可能用到的最佳分离方案是 [ ]
A．蒸馏法
B．水洗分液法
C．过滤法
D．水洗萃取法
答案：B
| 完形填空：先通读下面的短文，掌握其大意,然后在每小题的A、B、C、D四个选项中选出最佳选项。 | ||||
| Deng Yuanyuan is the hero of 20 children at the Sunshine Home in Shanghai. It is not an easy 1 to teach a class of kids with special needs. But for the 32-year-old girl, it is not difficult at all. Deng became a voluntary English teacher six months 2 . People usually think these kids are special and treat them 3 , Deng said. " But in my eyes , they are just lovely kids like every child." She remembered that the first time she 4 into the classroom, some kids 5 , some were mad at the stranger, and some were just talking to 6 . Deng then embraced(拥抱) every child. She taught only one English word " 7 " the whole day. When Deng came into the classroom 8 the following day, she was 9 that all the children were greeting her with hellos. She became popu  lar among the children.Gradually(逐步地), Deng 10 her friends to the class and introduced the Sunshine Home to more people. " Some of them even volunteered to teach with me," she said with a smile. | ||||
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