题目

从方框中选择恰当的选项补全下面的对话。A．What do you do after class?B．Can I ask you some questions?C．Sometimes I play ping-pong．D．What's your favourite class?E．When do you come to school?John：Hi，Ann．Ann：Sure．John： Ann：I come to school at 7：00．John：Ann：I like math．John： Ann：I do homework．John：Thank you．Ann：You're welcome． 答案：【1】B【2】E【3】D【4】A【5】C一次数学竞赛有20道题，兰兰做对了45，晶晶做对的题数是兰兰的87.5%．晶晶做对几道题？