专题二　选择题突破 （学生版+答案版）2026年中考物理一轮专题复习（江西）

INCLUDEPICTURE "专题二S.tif" INCLUDEPICTURE "专题二S.tif" \* MERGEFORMAT INCLUDEPICTURE "专题二S.tif" \* MERGEFORMAT INCLUDEPICTURE "专题二S.tif" \* MERGEFORMAT INCLUDEPICTURE "专题二S.tif" \* MERGEFORMAT INCLUDEPICTURE "专题二S.tif" \* MERGEFORMAT 1．在解答单项选择题时，不仅要选出正确答案，还要知道其他选项错误的原因，做到单项选择题不失分．多项选择题难度较大，解答时，考生需要谨慎思考，严密推理，尽量做到不错选、不多选、不漏选． 2．在考试时，选择题以填涂答题卡的形式作答，填涂时不需要书写字母，只需使用2B铅笔填涂相应选项的信息点．填涂时要将信息点涂满、涂黑，黑度以盖住框内字母为准． INCLUDEPICTURE "方法指导S.tif" INCLUDEPICTURE "方法指导S.tif" \* MERGEFORMAT INCLUDEPICTURE "方法指导S.tif" \* MERGEFORMAT INCLUDEPICTURE "方法指导S.tif" \* MERGEFORMAT INCLUDEPICTURE "方法指导S.tif" \* MERGEFORMAT INCLUDEPICTURE "方法指导S.tif" \* MERGEFORMAT 1．直接判断法：通过观察，直接从题目中所给出的条件，根据所学知识和规律推出正确结果，做出判断，确定正确的选项． 2．淘汰排除法：在读懂题意的基础上，根据题目的要求，先将明显错误或不合理的备选答案逐个地排除掉，最后只剩下正确的答案． 3．逆向思维法：从备选的各个答案入手，进行题意分析，分别把各个答案中的物理现象和过程作为已知条件，经过周密的思考和分析，倒推出题中需成立的条件或满足的要求，从而在备选的答案中做出正确的选择． 4．归谬法(反证法)：先提出和定理中的结论相反的假定，然后从这个假定中得出和已知条件相矛盾的结果，这样就否定了原来的假定而肯定了定理． 5．概念辨析法：对题目中易混淆的物理概念进行辨析，确定正误的方法． 6．计算求解法：根据命题给出的数据，运用物理公式推导或计算其结果并与备选答案对照，做出正确的选择． 7．推理法：根据题目所给条件，利用有关的物理规律、物理公式或物理原理通过逻辑推理或计算得出正确答案，然后再与备选答案对照做出选择． 8．赋值法：针对题设条件先赋值代入进行检验，看命题是否正确，从而得出结论． INCLUDEPICTURE "针对训练S.tif" INCLUDEPICTURE "针对训练S.tif" \* MERGEFORMAT INCLUDEPICTURE "针对训练S.tif" \* MERGEFORMAT INCLUDEPICTURE "针对训练S.tif" \* MERGEFORMAT INCLUDEPICTURE "针对训练S.tif" \* MERGEFORMAT INCLUDEPICTURE "针对训练S.tif" \* MERGEFORMAT 1．(2024·云南)下列与一名中学生有关的物理量中，最符合实际的是(　　) A．体温约为25 ℃ B．质量约为50 kg C．身高约为160 m D．心脏跳动一次的时间约为10 s 答案：B 2．(2024·黑龙江鸡西)下列关于声音的说法正确的是(　　) INCLUDEPICTURE "25W-821.tif" INCLUDEPICTURE "25W-821.tif" \* MERGEFORMAT INCLUDEPICTURE "25W-821.tif" \* MERGEFORMAT INCLUDEPICTURE "25W-821.tif" \* MERGEFORMAT INCLUDEPICTURE "25W-821.tif" \* MERGEFORMAT INCLUDEPICTURE "25W-822.tif" INCLUDEPICTURE "25W-822.tif" \* MERGEFORMAT INCLUDEPICTURE "25W-822.tif" \* MERGEFORMAT INCLUDEPICTURE "25W-822.tif" \* MERGEFORMAT INCLUDEPICTURE "25W-822.tif" \* MERGEFORMAT A．物体振动得越快,响度越大 B．听不到闹钟铃声，真空不能传声 INCLUDEPICTURE "25W-823.tif" INCLUDEPICTURE "25W-823.tif" \* MERGEFORMAT INCLUDEPICTURE "25W-823.tif" \* MERGEFORMAT INCLUDEPICTURE "25W-823.tif" \* MERGEFORMAT INCLUDEPICTURE "25W-823.tif" \* MERGEFORMAT INCLUDEPICTURE "25W-824.tif" INCLUDEPICTURE "25W-824.tif" \* MERGEFORMAT INCLUDEPICTURE "2 ... ...