若两个相似三角形的周长比为1:3,则面积比为( )
转眼间,我们就要告别初中生活,回首成长经历,思考我们面临的各种选择,我们将怀着新的理想,走向未来。为此我们应该( )
①感恩帮助过我们的老师和同学 ②不管是升学还是就业,都要努力做得更好
③选择时只考虑自己的兴趣 ④不断努力,脚踏实地走好每一步
在右边空白处,先画一个长4厘米,宽3厘米的长方形,然后在长方形内画一个最大的圆,标出圆心、直径、半径,并算出圆的周长和面积.
Amy and her family ____ over the winter holiday.Hainan is ____ their home, so they went there ____. Sanya is a good place to visit. The weather is ____. The ____ is beautiful. Amy took lotsof pictures there. She ____ in the sea, too.