被动式摆式列车，车体摆动的动力来源于作用在车体上的（）。
参考答案：离心力
_____ that the government can lead them out of the financial crisis, people are optimistic about the
future of the country.[ ]
A. Convincing
B. Convinced
C. To convince
D. Having convinced
在Excel200032作表左上角的名称框中，输入______不是引用B列第5行单元格。
A．$B$5
B．$B5
C．B5
D．5B
