说明：  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 key, the other players press the button again, and then it is not effective until the host presses the button again, and then he will answer the next round.)