一块长方形铁皮的长是3米,宽是2米,它的周长是______米.
(3+2)×2,
=5×2,
=10(米);
答:它的周长是10米.
故答案为:10.
The villagers have already known _____ we will do is to rebuild the bridge. [ ]
A. this
B. that
C. what
D. which
公安机关的任务,是公安机关依法在管辖范围内应承担的责任和义务。( )