粒度小的铁矿粉比粒度大的铁矿粉水分要求低些。
参考答案：错
— Is there a pay phone _______ the neighborhood?
—Yes, it's ______ Center Street _______ the right. [ ]
A. in, down, on
B. on, on, in
C. in, on, in
D. on, down, on
