移动式分配电箱、开关箱的下底与地面的垂直距离应（）。
A、大于0.6m
B、小于1.5m
C、小于0.6m
D、大于1.5m
参考答案：A, B
—Why did you persuade me _______ that dress?
—Because I think it's suitable for you. [ ]
A. buy
B. buying
C. to buy
D. bought
风化作用可分为（）、化学风化和（）三种类型。
