—Look！How long________like this?

—Three weeks! It's usual here that rain________without

　stopping these days of the year.

A．has it rained；pours

B．has it been raining；pours

C．is it raining；is pouring

D．does train；pours

与正面垂直，但与侧面和水平面倾斜的平面称为（）面。

A．正平面

B．水平面

C．侧垂面

D．正垂面