细胞分裂过程中，最先进行的是（  ）

点 $A$ 在x轴上，且到原点的距离为3，则点 $A$ 的坐标是____．

A

    When I was four, one day I was playing outside our house. I saw my grandfather's truck. It was black and looked better.” I got some paint and a brush which were left in the kitchen by my father. I painted the truck white and blue all over. I was finishing the job when my mum walked up and stopped me. She was worried that my grandfather would be angry. However, when my grandfather looked at my paintings on the truck, he laughed loudly. “Angela, that's the prettiest truck I've ever seen! I love it!”

    Sometimes adults (成年人) don't stop to see things through children's eyes. They missed so much beauty in the world. Luckily, my grandfather saw things in another way.