主持人按下按键，开始计时，在规定时间内八位选手进行抢答（即按下对应的按键），若其中一位选手按下按键，其他选手再次按下按键无效，直到主持人再次按下按键，进行下一轮抢答。(The host presses the button and starts to time. In the specified time, the eight players rush to answer (or press the corresponding key). If one player presses the ke