家喻户晓的作家韩寒，小时候数学不及格，数学学不好，他就在写作方面发展自己，最终走上了文学创作之路，他写得《三重门》等作品深受中学生的喜爱，韩寒成功之路给我们的启示是（    ）

冬天户外的自来水管需要穿上一件用隔热材料制成的“棉袄”．这样做的主要目的是（）

用压强计探究液体内部压强的特点，如图所示，回答下面问题：

要使如图装置中的小气球鼓起来，则使用的固体和液体可以是(    )

①石灰石和稀盐酸  ②镁和稀硫酸    ③固体氢氧化钠和水  ④生石灰和水．

    My cousin, Anna, is 118-year-old girl. She 2 in a middle school. She works hard at 3.Every day she 4 early in the morning. After that she reads English and 5 the English Radio Lesson. At 6:30 she6 by bike.

    Class begins at half past seven. There are four classes in the morning and two in the afternoon. After classes she does sports with her classmates.

    In the evening she 7 her homework. She likes 8 TV. But she only watches9on Sundays. I think she 10TV tomorrow.