根据2009﹣2014年浙江固定资产投资（单位：亿元）及增速统计图所提供的信息，下列判断正确的是____ ．

①2011年增长最快

②2011、2012两年的年平均增长率为22.15%

③从2011年开始增速逐年减少

④各年固定资产投资的中位数是15586.5．

扩句。

①他们经过黄河。

②他要写一首诗。

广东省少先队工作委员会、广东省青少年研究中心发布的一项“广东省少年儿童发展状况”调查表明，“学习”已经成了中小学生生活的主题词——他们的快乐、烦 恼全都因学习而起。调查结果显示，中小学生眼中最快乐的事情是“学习成绩好”；而在最让中小学生烦恼的一系列事件中，“学习成绩不太好”排在第一位。

    Hunter and Sally went down the street with their mother. They could buy a pet today. “I cannot wait to see the pets!”Sally said. She wanted a cat. Hunter wanted a frog or a snake.
    They went into the pet shop. “Look! That rabbit made a hole to hide in,” Sally said. “Look at those two cats,” said Hunter. Their cage was on the floor. The small and brown cats were asleep on each other.
    Sally leaned over the cage. She wanted a better look. The gold necklace she had around her neck came loose. It fell into the cage. It woke up the cats. “Oh no!” Sally cried. “I lost my necklace! It is in the cage!” Then the shopkeeper came. He opened the cage, and took out the necklace. At last, they bought two cats and took them home.