梯形的下底长为8cm,中位线长为6cm,则上底长为( )cm.
4
一种商品打八五折销售,“八五折”表示现价是原价的______%.比原价便宜了______%.
– Do you know __________ the iPhone 4 yesterday?
–Sorry, I have no idea about it.
A.how much did he pay for
B.how much he paid for
C.he paid for how much
D.he paid how much for