题目

Why does the man stop his talk with the woman?A. He isn't interested in her words.B. He is expecting another call.C. He is angry with her. 答案：【答案】B【解析】此题为听力题，解析略。此题为听力题，解析略。不同物质a、b、c组成的实心体，它们的质量和体积的关系如图所示，由图可知A.a物质的密度最小B.c物质的密度最大C.b物质的密度是1kg/m3D.某体积a物质的质量，恰好是等体积b物质质量的2倍