2.535l可修约为( )
A．2.23B．2.22C．2.54D．2.53E．2.51
参考答案：C
A．E=，m=0
B．E=，m=
C．E=，m=0
D．E=，m=
—How come a simple meal like this costs so much —We have（）in your bill the cost of the cup you broke just now.
A. added
B. included
C. contained
D. charged
，m=0
，m=
，m=0
，m=