题目

Where are the speakers?A．At a canteen.B．At a clinic.C．At a bank. 答案：【答案】B【解析】【原文】M: Now, what seems to be the trouble, Mrs. Stevens?W: I've been very dizzy lately. And last night, I had some chest pain. M: Don't worry. Let me have a look.下表是小明在标准大气压下探究某种物质的凝固特点时记录的实验数据．放热时间/min0.511.522.533.544.555.56…2020.521温度/℃70645923524948484848474543…212121分析表中数据可知：从开始计时起，到第______min时的数据有明显错误；当该物质温度为64℃时，其状态是______态（选填“固”、“液”或“固液混合”）；这种物质是______（选填“晶体”或“非晶体”）．