学校开联合会需要搬22张桌子,每两名同学搬一张,现在有15名同学,还需要多少名同学才能一次搬完?
22×2-15
=44-15
=29(名)
答:还需要29名同学才能一次搬完.
---My father studies at Liaoning Mormal University.---________my sister and me.
A.So do
B.So does
C.It was the same with
D.So it is with
作业人员在机械挖土清理基坑时,()进入铲斗回转半径范围。
A.可以
B.严禁
C.必须
D.不必