题目

甲、乙两种物质的质量和体积关系图像如图所示，由图像可知（） A . ρ甲：ρ乙=2：1 B . ρ甲：ρ乙=1：2 C . 若V甲=V乙 ， 则m甲<m乙 D . 若m甲=m乙 ， 则V甲>V乙 答案：A--- Have you heard that George quit his job? ---Yeah, but I can't             why he did so． A．put out B．figure out C．carry out D．send out