题目

江苏省启东中学2010-2011学年高二上学期期中考试英语试题.doc   Speech and writing are man’s most important methods of c____________. 答案：ckdacommunication已知全集U=R，集合A={x|x＞2}，B={x|x≤1}，则（A∪CUB）∩（B∪CUA）=（　　）A．空集B．{x|x＜1或x≥2}C．{x|1≤x＜2}D．{x|1＜x≤2}