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8、Y: 宋体DIV.MyFav_1262842317857 DIV.Section1page: Section1DIV.MyFav_1262842317857 OLMARGIN-BOTTOM: 0cmDIV.MyFav_1262842317857 ULMARGIN-BOTTOM: 0cm一、填空题1空气 音色2信息 振动3不变 使用节水马桶4低 凝华 吸；5凝固 熔化 晶体6（1）该物质是晶体；（2）该物质的熔点是80；（其余只要合理的都得分）7反射、焦点8光的直线传播、光的反射、虚像9重合；不能；相等；等于1015、211电荷 吸引轻小物体二、选择题12345678910CBCABCCCBD三、作图题四、综合解答1空气 入射角 能 强；20 晶体 液。3（1）温度计的玻璃泡接触烧杯的底部；温度计的玻璃泡没有与水充分接触；48（2）水的初温度过低、水多了、酒精灯的火焰温度低，没有使用外焰加热等。4实、远、大。5并联电路干路中的电流等于各支路电流之和；使结论更具有普遍性、可靠性；改变电源电压（改变电池的节数）；更换不同规格的小灯泡等（只要答案合理均给分）