is it from your home to the radio station?---About three kilometers.A. How longB. How

问题补充：

--- is it from your home to the radio station?

---About three kilometers.

A. How long

B. How far

C. How much

D. How often

答案：

A. How long

(答案→)B. How far

C. How much

D. How often

解析：由后面的答语“大约三千米”可以推测出来上面应该问的是距离，用how far故选B.