米板烧焦的時候，下列（）做法可以去除焦味
A.将饭锅放于冷水中
B.米饭上放一片面包
C.往米饭里滴醋
D.放鲜葱段
参考答案：D
设U={x|x是小于9的正整数}，A={1，2，3}，B={3，4，5，6}，求A∩B，CU（A∩B）．
Where's the book I gave you? What ________ it?
A．did you do with
B．have you done with
C．had you done with
D．do you do with
