题目

Hurry up! The train ______. You know it ______ at 8:30 am. A . leaves; leaves B . is leaving; leaves C . leaves; is leaving D . is leaving; is leaving 答案：B11．对图中山脉的描述正确的是（　　）A．山脉A两侧有我国最大高原和平原B．山脉C南北两侧植被有明显差异C．山脉B是山东省和山西省的分界线D．山脉D南侧为半干旱区，北侧为半湿润区