We start to grow from the moment we were born. We keep growing and growing until we become adults. We become bigger, taller and heavier.

【小题1】Our bones(骨头) grow bigger and longer to make us taller and stronger. Our muscles (肌肉) are bigger in order to support our bigger bodies.【小题2】

While the parts of our bodies grow, they do it at different speed. For example, one’s nose might have finished growing, but the other parts of the face are still changing.

Similarly, each child grows at his or her own speed.【小题3】Not one of them is the same as another except for some twins. Some grow faster than others, so they look bigger and taller.【小题4】

Our genes（基因）also determine how much we grow. It is unlikely (不太可能的) to have short parents for tall children.【小题5】

No matter how quickly and how much we grow, each person is different. That is the beauty of human growth.