双鹿毛线0.8千克卖46元，平均每千克______元．
46÷0.8=57.5（元）．
答：平均每千克57.5元．
故答案为：57.5．
_________to the party, Joan was greatly hurt.
A．Having not been invited
B．Not having been invited
C．Having not invited
D．Not having invited
整顿的“三定原则”及“三要素”分别是什么？
