实验目的

实验操作

A

鉴别硬水和软水

分别加入肥皂水，振荡

B

提纯粗盐(含少量泥沙)

将粗盐加适量水溶解、过滤、蒸发结晶

C

除去二氧化碳中的一氧化碳

将气体通人足量氢氧化钠溶液

D

验证Mg、Fe、Cu活动性顺序

将铁丝分别插入氯化镁和氯化铜溶液中

Brave

Type: 3D cartoon  Comedy        Running time: 95 minutes

Merida, a princess, refused to marry a person that she dislikes. This causes trouble for her family and the whole country. Merida turns to a witch(女巫) for help. In doing so, her family and the country are in danger. Merida must save her family and the country before it is too late. X K b1.Com

The Grey

Type: Action         Running time: 117 minutes

The Grey is based on the short story “Ghost Walker” written by Ian Mackenzie Jeffers. It's about a number of oil men who are in trouble in Alaska after a plane crash(空难). They have to fight against grey wolves that threaten（威胁） their lives.

Mirror Mirror

Type:   comedy       Running time: 106 minutes

You must know the story of Snow White. Would you like to see this story again? Come to see Mirror Mirror. It's a comedy about Snow White. Lily Collins and Julia Roberts are the main actresses in this interesting movie.

Chimpanzee

Type: Documentary      Running time: 78 minutes

This movie is directed by Alastair Fothergill and Mark Linfield. It's a 2012 nature documentary film about a young chimpanzee named Oscar. He is alone in the African forests until he is raised by another chimpanzee. The chimpanzee takes care of Oscar like his own child.