医院医疗统计工作的特点是（）。

A.广泛性、连续性和专业性

B.广泛性、周期性和专业性

C.针对性、连续性和专业性

D.针对性、周期性和专业性

E.客观性、科学性和准确性

— ______ do you have the drawing lessons? The pictures you draw are so beautiful.

— Once a week. I began having drawing lessons at the age of five.

A．How often

B．How much

C．How long

D．How many