阅读理解。   

     My name is Xiaoming. I get up at half past six. I have breakfast at seven o'clock. I go to school at eight o'clock. I have lunch at twelve o'clock. I go home at four o'clock. I have dinner at five o'clock. I watch TV at half past six. I do my homework at seven o;clock. I go to bed at nine o'clock.

2014年5月统计：在广东省5千多万未成年人中，约有4万人有心理问题。未成年人遇到烦恼时要（  ）
①学会当自己的“心理医生”                           ②主动向老师.父母以及社会寻求帮助
③学会调控自己的情绪，积极面对             ④独立承受，因为求助他人是怯懦的

南京到上海的水路长392千米，一艘客轮用7.5小时行完全程，这艘客轮平均每小时行____千米？(得数保留两位小数)