—— 请按键盘 空白键 开始游戏 ——

The development of attention in childhood is a foundation for self-regulation and academic achievement.
资本资产定价模型(CAPM)是理解风险-回报权衡的有用工具,但它远非完美。
人是理性动物,但当他被要求按照理性的要求行动时,可又要发脾气了。
"Art is about asking questions, not providing answers."