运用唯物论的有关知识,结合上述材料回答:
— Linda, don't give out too much ________ information to strangers on line. It's dangerous.
— OK, Mum. I promise I will learn your words ________.
帮助别人的同时也就是帮助自己,体现了合作可以增强团结。( )
80比50多60%,50比80少37.5%.