菱形两邻角之比为1：2，周长为24cm，则菱形的面积为______cm2．

— What's the _____ of this weekend?

— The opening ceremony of our school's Art Festival will be held. [ ]

A. item

B. schedule

C. journey

D. step

---- _____ does your school have the parents’ meeting ?

---- Twice a year.

A．How often

B．How long

C．How many

D．How much

论述宰前因素影响肉嫩度的因素

记账时，可用蓝黑墨水、碳素墨水书写，也可以圆珠笔或铅笔书写，但是不得使用红色水笔书写。( )

自我提高内驱力。