Psychology tells us that many people hate to take risks. But it is good for us to take risks, especially when the risk is to achieve a desired result. In that way, we become stronger and braver. Our
On a hot day, I decide to mow our extremely hilly lawn. It was likely to 21 a jungle（丛林）with weeds growing wildly. I need to mow it at once. After several false 22
需的能量直接来自ATP，由细胞的呼吸作用产生。