说明：  1 在主持人按下抢答开关后，各位选手即可开始抢答，并 在数码管上显示最先抢答选手的号码； 2 在主持人按下抢答开关后，计数器开始9秒倒计时，若 倒计时结束后没有人抢答，则本轮抢答无效，进入下一 轮；
(Answer by pressing one switch in the host after you get started Answer players and digital tube display first numbers Answer players 2 in the host switch by pressing Answer, the counter started 9 seconds countdown, if the countdown after the end of Answer no, then the current round of Answer invalid, proceed to the next round )