在图中，s=60cm，与之对应的h=30cm．现用弹簧测力计进行两次操作：

①沿竖直方向匀速提升小车；

②沿斜面方向匀速拉动小车，记录数据如下表

分析数据有如下一些发现．其中，具有较高水平的发现是（  ）

 每天上学、放学时，学校门口挤满了因担心交通安全等各种原因前来接送孩子的家长。这种“中国式接送”，是无奈，还是溺爱？观察下图漫画，回答下列问题：

    It's Sunday today. Sam and his friends are washing(洗)a car for Mr. Green. They can give the money from the car washing to their school football team. Mary and her friends are seeing a funny movie. They see an interesting cat in the movie. Ann is in the park with her mother. They're talking under a big tree. I think they are having a good time. Joan wants to know what her friend is doing. Her friend is in Japan, so Joan is writing a letter to her friend on her computer. May is cleaning the house with her parents. The family are very busy, but they're very happy. They are working and singing.