实现对四个人进行抢答，有抢答鉴别模块，转换模块，3选1模块，倒计时模块COUNT，该模块实现答题时间的倒计时，在计满100s后送出声音提示。-The realization of the four individuals Answer, there Answer identification module, conversion module, a module 3 election, the countdown module COUNT, the module answer countdown time, in the 100s after the expiration of sending voice prompts.