题目

下列图像能正确反映其对应操作中某物质质量变化关系的是             A．加热氯酸钾和二氧化锰的混合固体 B．将一定质量的红磷放在盛有氧气的密闭容器中燃烧 C．将一定量的镁片和铝片分别和等质量、等溶质质量分数的稀硫酸混合 D．向氢氧化钠和氯化钡的混合溶液中滴加过量的稀硫酸 答案：A听下面一段较长对话，回答以下小题。【1】Where do the speakers plan to go?A. The woman’s home. B. A museum. C. A library.【2】Why does the woman want to go on Saturday afternoon?A. To enjoy nice weather. B. To avoid the crowd.C. To sleep late in the morning.