两个圆的周长相等,那么他们的面积也一定相等.
有个零件(正方体中间挖去一个圆柱形孔)如图放置,它的左视图是( )
The situation required he ____ at the meeting
想一想,填一填.
计算24-8时,把24分成14和10,先计算10-8=____,再计算____+____=____;也可以这样想:把24分成14和10,先计算14-8=____,再计算____+____=____。
(____)1. Let me clean the desk.
(____)2. I see a fish bowl.
(____)3. Look at my book.
(____)4. It's my picture.
A. B. C. D.