一块梯形麦田的上底是25m,下底是35m,面积是1140m2.高多少米?
1140×2÷(25+35),
=2280÷60,
=38(米).
答:梯形的麦田的高是38米.
The flat in shanghai is _________ than _________ in Wuxi.
A.much smaller ; one
B.more small ; the one
C.much smaller ; that
D.many smaller ; that
测向机的持机时手背一面是()
A.大音面
B.单向开关
C.天线
D.频率调谐旋钮