—— 请按键盘 空白键 开始游戏 ——

The strongest is never strong enough to be always the master unless he transforms strength into right and obedience into duty.
Collaboration between industry and government is essential to meet our climate goals.
真正的老师会保护学生免受他个人影响。他激发自信。他将他们的目光从自己引导到激励他的精神。他不会拥有门徒。
The probability of a response is determined by its reinforcement history.