①重视自我评价和他人评价

②从身体特征和生理状况来认识自己

③从个性心理特征来认识自己

④从在群体中的关系来认识自己

阅读理解,根据短文内容选择最佳选项。

    Today is Saturday. It's rainy. John's family is at home. His father Mr Jones is reading a book in the study. His mother is cooking in the kitchen. His brother Tom and his friend Mike are playing computer games in the bedroom. His grandpa and grandma are watching TV in the living room.

一只船有一个漏洞，水以均匀速度进入船内．发现漏洞时船内已经进入了一些水，如果以12个人淘水，3小时可以淘完，如果以5个人淘水，10小时才能淘完．现在要想在2小时内淘完，需要（　　）人．

若地磁场在某区域的磁场强弱和方向处处相同，小明在该区域某处竖直拿着闭合的矩形导电线圈面向南方，如图，则能使线圈中产生感应电流的操作是（   ）