根据短文内容，用方框中所给单词的适当形式填空，并将答案写在相应的横线上。每词限用一次。

    Lisa and Alice are good ____. They go to a children's hospital today. They want to help the children to be happy. Lisa ____ reading. So she tells ____ to them. Alice likes singing and ____. She sings some English songs for the children. They go home late, but they are very ____.

With the help of the teacher, he decided _______ in class.

某班同学通过上网收集到以下数据，并制作成如下折线图，对如图（含注）解读正确的是（    ）

2005﹣2014年我国国内生产总值增长速度情况

注：2015年我国服务业占GDP比重达到50.5%，首次超过50%。

①我国经济从高速增长转为中高速增长        ②我国经济发展进入新常态

③我国城乡居民收入差距不断缩小                ④我国经济结构不断优化升级