在格纸上画出2个面积是12平方厘米的不同长方形(每一格是1cm2).
所以长方形的长和宽可以是:
6厘米和2厘米;4厘米和3厘米;于是画图如下:
It takes them two hours ______ football every day.
用同一头成年羊体细胞克隆的后代会和其长得几乎一模一样.(判断对错)
Look at the window, please.