题目

--Can you guess __________the MP4 player yesterday?  --Sorry，I’ve no idea about it． A．how much did he pay for                                   B．how can he get C．how much he paid for                                D．how did he get 答案：C在△ABC中，∠A、∠B、∠C的外角度数的比是4：3：2，那么∠A=（    ）度．