题目

阅读填句LifeLessonsLife is not easy when you are pursuingsomething worthwhile and ready to learn from the best experiences. Here are some life lessons which people willlearn the hard way in majority of cases. It takes consistent time and effort to besuccessful in any area. However, People usually get discouraged when it takesmore time than they thought it would. At this time, people refer only to peoplewho have already achieved what you want to be, which most people fail to do. Lookat any successful person and you'll notice one thing common in all of them. Theytook time to learn and maste下列关于动脉特点的叙述，不正确的是（    ）。                          A、管壁厚    B、血流速度快    C、都分布于较深部位    D、弹性大