15吨至30吨的货车，车重每增加1吨，费率下降（）元/吨公里。
A.0.02
B.0.002
C.0.045
D.0.04
参考答案：B
—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
身柱
