—I am late, for there is too much traffic on my way to school.

—Oh, ______. Don’t lie!

A．take your time

B．don’t worry

C．Come on

D．take it easy

只要所有投票者的偏好都呈单峰形，不论他们所须承担的税收份额如何，中间投票者定理均可成立。