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题型加练一阅读下面短文，掌握大意，然后从每题所给的A、B、C、D四个选项中选出最佳选项。(一)Anoldcarpenter(木匠)wasreadytoretire.Hisbo...
题型加练十阅读理解七选五(一)(2017·山东济南中考)ShiPengwonthetopprizeinacollegestudents'startup(创业)competitionforsettingupawebsi...
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滚动加练3常见无机物及其综合应用1．0.80gCuSO4·5H2O样品受热脱水过程的热重曲线(样品质量随温度变化的曲线)如图所示。请回答下列问题：(1...
滚动加练2化学基本理论综合应用1．(·烟台5月适应测试)合成氨技术的发明使工业化人工固氮成为现实。(1)已知N2(g)＋3H2(g)2NH3(g)ΔH＝...
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物质的量及其应用命题角度1一定物质的量浓度的溶液配制1．(2018·西南大学附属中学调研)配制一定物质的量浓度的NaCl溶液时，下列操作不正确...
“七角度”突破NA命题角度122.4L·mol－1适用条件的分析1．设NA为阿伏加德罗常数的值。下列有关叙述正确的是()A．22.4L(标准状况)氩气含有...
