蛇年将至祝福来，一年级的同学们自信响亮地拼读春节贺词，童音声声道出新年的祝福。新年到，家家户户贴春联祈愿，春联蕴含着人们对美好生活的向往与追求。二年级的同学们和老师玩起了“对对碰”的游戏，你出上联，我对下联，同学们答得快，对得妙，展现着扎实的语文基础 ...

Psychologically, every choice you make can be considered a trade-off because every time you make a choice, you are giving up other choices, knowingly or unwittingly.