题目

The main issue at the APEC meeting was a climate – change plan      by Australia’s Howard and backed by Bush.        A．put out     B．put off      C．put away   D．put forward 答案：D 解析: 略下列四个命题中①?x∈R，2x2-x+1＞0；②“x＞1且y＞2”是“x+y＞3”的充要条件；③函数的最小值为2其中假命题的为     （将你认为是假命题的序号都填上）．