题目

For many, it is a journey that you will never give up, and the more you put in, the more you get out. While this kind of attitude may work for some, the latest scientific research suggests that it can also go wrong for many people.Mauss has shown that seeking happiness can also increase feelings of loneliness and disconnection, perhaps because it causes you to focus your attention on yourself and your own feelings rather than appreciating the people around you. Self-focus might make me engage with other people less，and I might judge other people more negatively if I think they ‘mess' with 发射地球同步卫星时，先将卫星发射至近地圆轨道1，然后经点火，使其沿椭圆轨道2运行，最后再次点火，将卫星送入同步圆轨道3.轨道1、2相切于Q点，轨道2、3相切于P点，如图所示，则当卫星分别在1、2、3轨道上正常运行时，以下说法正确的是（　　）A. 卫星在圆轨道3上运行的速率大于在圆轨道1上运行的速率B. 卫星在轨道2上经过P点时的速率小于它在轨道3上经过P点时的速率C. 卫星在圆轨道3上运行的角速度大于在圆轨道1上运行的角速度D. 卫星在轨道2上经过P点时的加速度小于它在轨道3上经过P点时的加速度