第9题:[单项选择]<br><br><br/>A.Thereisasignof"greenhand"insidethecar.<br/>B.Therearetwosetsofbrakesinsidethecar.<br/>C.Itisonlybigenoughtohold3persons.<br/>D.Itcan’trunveryfastnomatterhowyoudrive.<br/>参考答案:B 答案解析:[听力原文] How is the driver’s education car designed in order to prevent accident