某商品降价20%后,要想恢复原价,则要重新提价( )
A.35%
B.25%
C.20%
D.30%
1÷(1-20%)=125%,
125%-1=25%;
故选B.
I don’t think it is teachers who ______ for giving students too much pressure.
A.are to blame
B.are going to blame
C.are to be blamed
D.should blame
化合物物质不包括()。
A、Fe3C
B、CuZn
C、CuAl2
D、石墨