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第一次化学统测,最后一题需要同时考虑正负电荷、物质的量而确定答案,考场上没做出来,感极而悲,认识到现在的题目已不是直接考虑就能完成,遂开始了差劲、无聊事项的记录。
化学大题考虑事项:计算物质的量、正负电荷、是否可溶、是否为弱电解质,注意弱电解质也在离子方程式里。
数学:
对 \(f(x)=(ax-1)(x+2)\) 正负性分类,讨论半天只在 \"><meta property="og:type" content="article"><meta property="og:title" content="差劲、无聊记录"><meta property="og:url" content="https://schtonn.github.io/blog/posts/t-note/index.html"><meta property="og:site_name" content="schtonn"><meta property="og:description" content="2022.10.14
第一次化学统测,最后一题需要同时考虑正负电荷、物质的量而确定答案,考场上没做出来,感极而悲,认识到现在的题目已不是直接考虑就能完成,遂开始了差劲、无聊事项的记录。
化学大题考虑事项:计算物质的量、正负电荷、是否可溶、是否为弱电解质,注意弱电解质也在离子方程式里。
数学:
对 \(f(x)=(ax-1)(x+2)\) 正负性分类,讨论半天只在 \"><meta property="og:locale" content="en_US"><meta property="article:published_time" content="2022-10-15T05:40:48.000Z"><meta property="article:modified_time" content="2023-02-17T11:39:04.233Z"><meta property="article:author" content="Alex"><meta property="article:tag" content="other"><meta name="twitter:card" content="summary"><link rel="canonical" href="https://schtonn.github.io/blog/posts/t-note/"><script id="page-configurations">CONFIG.page={sidebar:"",isHome:!1,isPost:!0,lang:"en"}</script><title>差劲、无聊记录 | schtonn</title><noscript><style>.sidebar-inner,.use-motion .brand,.use-motion .collection-header,.use-motion .comments,.use-motion .menu-item,.use-motion .pagination,.use-motion .post-block,.use-motion .post-body,.use-motion .post-header{opacity:initial}.use-motion .site-subtitle,.use-motion .site-title{opacity:initial;top:initial}.use-motion .logo-line-before i{left:initial}.use-motion .logo-line-after 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class="post-meta-item-text">Edited on</span> <time title="Modified: 2023-Feb-17 19:39:04" itemprop="dateModified" datetime="2023-02-17T19:39:04+08:00">2023-Feb-17</time></span><span class="post-meta-item"><span class="post-meta-item-icon"><i class="fa fa-comment-o"></i></span> <span class="post-meta-item-text">Valine:</span><a title="valine" href="/blog/posts/t-note/#valine-comments" itemprop="discussionUrl"><span class="post-comments-count valine-comment-count" data-xid="/blog/posts/t-note/" itemprop="commentCount"></span></a></span></div></header><div class="post-body" itemprop="articleBody"><link rel="stylesheet" href="/blog/css/spoiler.css" type="text/css"><script src="/blog/js/spoiler.js" type="text/javascript" async></script><h2 id="section">2022.10.14</h2><ul><li>第一次化学统测,最后一题需要同时考虑正负电荷、物质的量而确定答案,考场上没做出来,感极而悲,认识到现在的题目已不是直接考虑就能完成,遂开始了差劲、无聊事项的记录。<ul><li>化学大题考虑事项:计算物质的量、正负电荷、<a href="/blog/posts/dissolve">是否可溶</a>、是否为弱电解质,注意弱电解质也在离子方程式里。</li></ul></li><li>数学:<ul><li>对 <span class="math inline">\(f(x)=(ax-1)(x+2)\)</span> 正负性分类,讨论半天只在 <span class="math inline">\(a=\dfrac{1}{2}\)</span> 点分类,忘了在零点分,痛失三分。</li><li>要学会在草稿作图,有助于思路。</li></ul></li><li>物理:匀加速直线运动求距离忘除二,导致两问全错。</li><li>英语:定语从句填空不能空着。</li></ul><a id="more"></a><h2 id="section-1">2022.10.17</h2><ul><li>化学:离子方程式如果反应物是沉淀,也得记得不能给他电解了,写成原形式。</li><li>数学:关于奇偶性的讨论不仅可以从 <span class="math inline">\(f(x)=-f(-x)\)</span> 这个思路看,还可以观察 <span class="math inline">\(f(-x)+f(x)=0\)</span> 这个式子。</li></ul><h2 id="section-2">2022.10.19</h2><ul><li>语文<ul><li>今天本来说默写声声慢和琵琶行结尾,结果这俩一个都没默,倒是默写上次二选一选剩下的那个永遇乐,搞偷袭,我根本没背!</li><li>句法结构:主谓宾定状补,<em>定的</em> <strong>主</strong> <em>状地</em> <strong>谓</strong> <em>定的</em> <strong>宾</strong> <em>补得</em>。主语一般名词,谓语一般动词云云,但这些都很不确定,比如今天星期三,星期三即谓语。</li></ul></li><li>数学:二分法求函数零点,三分法求函数极值。</li></ul><h2 id="section-3">2022.10.23</h2><ul><li>语文:要背论语居然书还放在学校。趁信息课把书拿回来了。</li><li>数学<ul><li>期中练习卷犯了大量低级错误,如下:<ol type="1"><li>韦达定理简单计算出错。</li><li>形如 <span class="math inline">\(\dfrac{ax+b}{\sqrt{x}}\)</span> 的式子愣是没想到怎么用均值(其实就是 <span class="math inline">\(a\sqrt{x}+b\dfrac{1}{\sqrt{x}}\)</span>)。</li><li>有一不等式解集不包含 <span class="math inline">\(3\)</span>,花费大量时间分类愣是没想到可以直接把 <span class="math inline">\(3\)</span> 代入;同时第二问分类后忘记考虑第一问讨论出的限制。</li></ol></li><li>关于函数复合:复合相当于换元,用 <span class="math inline">\(f(x)\)</span> 复合 <span class="math inline">\(f(|x+1|)\)</span> 时需先取绝对值再加一。</li><li><span class="math inline">\(a\geq f(x)\)</span> 恒成立不一定推出 <span class="math inline">\(a\geq f_{max}(x)\)</span>,因为 <span class="math inline">\(f_{max}(x)\)</span> 不一定存在(如 <span class="math inline">\(f(x)=\dfrac{1}{x}(x<0)\)</span>)。</li></ul></li><li>英语:完型想多了,只和前面联系却忽略了后文的逻辑要求。</li><li>生物<ul><li>核糖体成分是<em>RNA</em>+蛋白质。</li><li>细胞学说云云揭示的是统一性。</li><li>糖被指的就是糖,不包含蛋白质。</li></ul></li></ul><h2 id="section-4">2022.10.24</h2><ul><li>语文:作文写得太“老实”,现在的记叙文没有必要像中考应试一样,开头结尾要出新,可以把最好的镜头放在开头。</li><li>数学:证明单调性时 <span class="math inline">\(\sqrt{x_1}-\sqrt{x_2},x_1^3-x_2^3\)</span> 这种没学过的函数一定要把它化成已知函数来证明(如<span class="math inline">\(\sqrt{x_1}-\sqrt{x_2}=\dfrac{x_1-x_2}{\sqrt{x_1}+\sqrt{x_2}}\)</span>),不然相当于啥也没说。</li><li>英语:阅读又栽,这回问题出在只看了一个选项就写答案。</li></ul><h2 id="section-5">2022.10.29</h2> 行政班级:11 姓名:向量<div class="spoiler collapsed"><div class="spoiler-title"></div><div class="spoiler-content"><h3 id="总分">总分</h3><p>全科分数:688.5</p><ul><li>全科分数班级排名:13</li><li>全科班级参考人数:42</li><li>全科班级年级排名:4</li></ul><table><thead><tr class="header"><th>平均分</th><th>最高分</th><th>四分位数(75%)</th><th>中位数</th><th>四分位数(25%)</th><th>最低分</th></tr></thead><tbody><tr class="odd"><td>663.07</td><td>779</td><td>687.63</td><td>664.25</td><td>635</td><td>380.5</td></tr></tbody></table><ul><li>全科分数年级排名:126</li><li>全科年级参考人数:642</li></ul><table><thead><tr class="header"><th>平均分</th><th>最高分</th><th>四分位数(75%)</th><th>中位数</th><th>四分位数(25%)</th><th>最低分</th></tr></thead><tbody><tr class="odd"><td>629.5</td><td>869.5</td><td>677.38</td><td>640.75</td><td>599.5</td><td>237</td></tr></tbody></table><h3 id="生物">生物</h3><p>单科分数:84</p><ul><li>单科分数班级排名:38</li><li>单科班级参考人数:43</li><li>单科班级年级排名:3</li></ul><table><thead><tr class="header"><th>平均分</th><th>最高分</th><th>四分位数(75%)</th><th>中位数</th><th>四分位数(25%)</th><th>最低分</th></tr></thead><tbody><tr class="odd"><td>89.16</td><td>98</td><td>93</td><td>90</td><td>86</td><td>72</td></tr></tbody></table><ul><li>单科分数年级排名:322</li><li>单科年级参考人数:561</li></ul><table><thead><tr class="header"><th>平均分</th><th>最高分</th><th>四分位数(75%)</th><th>中位数</th><th>四分位数(25%)</th><th>最低分</th></tr></thead><tbody><tr class="odd"><td>83.89</td><td>98</td><td>90</td><td>86</td><td>80</td><td>23</td></tr></tbody></table><h3 id="数学">数学</h3><p>单科分数:144</p><ul><li>单科分数班级排名:2</li><li>单科班级参考人数:48</li><li>单科班级年级排名:7</li></ul><table><thead><tr class="header"><th>平均分</th><th>最高分</th><th>四分位数(75%)</th><th>中位数</th><th>四分位数(25%)</th><th>最低分</th></tr></thead><tbody><tr class="odd"><td>127.81</td><td>148</td><td>136.5</td><td>129</td><td>122</td><td>97</td></tr></tbody></table><ul><li>单科分层班级名称:42P1</li><li>单科分数分层班级排名:3</li><li>单科分层班级参考人数:46</li><li>单科分层班级年级排名:5</li></ul><table><thead><tr class="header"><th>平均分</th><th>最高分</th><th>四分位数(75%)</th><th>中位数</th><th>四分位数(25%)</th><th>最低分</th></tr></thead><tbody><tr class="odd"><td>131.52</td><td>148</td><td>138.75</td><td>134</td><td>128</td><td>81</td></tr></tbody></table><ul><li>单科分数年级排名:38</li><li>单科年级参考人数:699</li></ul><table><thead><tr class="header"><th>平均分</th><th>最高分</th><th>四分位数(75%)</th><th>中位数</th><th>四分位数(25%)</th><th>最低分</th></tr></thead><tbody><tr class="odd"><td>123.11</td><td>150</td><td>135.5</td><td>127</td><td>116</td><td>18</td></tr></tbody></table><h3 id="物理">物理</h3><p>单科分数:84</p><ul><li>单科分数班级排名:19</li><li>单科班级参考人数:44</li><li>单科班级年级排名:4</li></ul><table><thead><tr class="header"><th>平均分</th><th>最高分</th><th>四分位数(75%)</th><th>中位数</th><th>四分位数(25%)</th><th>最低分</th></tr></thead><tbody><tr class="odd"><td>84.23</td><td>97</td><td>87</td><td>83</td><td>80</td><td>72</td></tr></tbody></table><ul><li>单科分层班级名称:A5</li><li>单科分数分层班级排名:19</li><li>单科分层班级参考人数:44</li><li>单科分层班级年级排名:4</li></ul><table><thead><tr class="header"><th>平均分</th><th>最高分</th><th>四分位数(75%)</th><th>中位数</th><th>四分位数(25%)</th><th>最低分</th></tr></thead><tbody><tr class="odd"><td>84.23</td><td>97</td><td>87</td><td>83</td><td>80</td><td>72</td></tr></tbody></table><ul><li>单科分数年级排名:217</li><li>单科年级参考人数:621</li></ul><table><thead><tr class="header"><th>平均分</th><th>最高分</th><th>四分位数(75%)</th><th>中位数</th><th>四分位数(25%)</th><th>最低分</th></tr></thead><tbody><tr class="odd"><td>79.03</td><td>99</td><td>87</td><td>81</td><td>74</td><td>21</td></tr></tbody></table><h3 id="化学">化学</h3><p>单科分数:94</p><ul><li>单科分数班级排名:3</li><li>单科班级参考人数:41</li><li>单科班级年级排名:7</li></ul><table><thead><tr class="header"><th>平均分</th><th>最高分</th><th>四分位数(75%)</th><th>中位数</th><th>四分位数(25%)</th><th>最低分</th></tr></thead><tbody><tr class="odd"><td>83.56</td><td>98</td><td>88</td><td>85</td><td>79</td><td>62</td></tr></tbody></table><ul><li>单科分层班级名称:45A5</li><li>单科分数分层班级排名:3</li><li>单科分层班级参考人数:41</li><li>单科分层班级年级排名:8</li></ul><table><thead><tr class="header"><th>平均分</th><th>最高分</th><th>四分位数(75%)</th><th>中位数</th><th>四分位数(25%)</th><th>最低分</th></tr></thead><tbody><tr class="odd"><td>83.56</td><td>98</td><td>88</td><td>85</td><td>79</td><td>62</td></tr></tbody></table><ul><li>单科分数年级排名:41</li><li>单科年级参考人数:584</li></ul><table><thead><tr class="header"><th>平均分</th><th>最高分</th><th>四分位数(75%)</th><th>中位数</th><th>四分位数(25%)</th><th>最低分</th></tr></thead><tbody><tr class="odd"><td>82.21</td><td>99</td><td>90</td><td>85</td><td>77</td><td>31</td></tr></tbody></table><h3 id="政治">政治</h3><p>单科分数:80</p><ul><li>单科分数班级排名:9</li><li>单科班级参考人数:10</li><li>单科班级年级排名:9</li></ul><table><thead><tr class="header"><th>平均分</th><th>最高分</th><th>四分位数(75%)</th><th>中位数</th><th>四分位数(25%)</th><th>最低分</th></tr></thead><tbody><tr class="odd"><td>88.5</td><td>98</td><td>95.25</td><td>90</td><td>83</td><td>73</td></tr></tbody></table><ul><li>单科分数年级排名:190</li><li>单科年级参考人数:226</li></ul><table><thead><tr class="header"><th>平均分</th><th>最高分</th><th>四分位数(75%)</th><th>中位数</th><th>四分位数(25%)</th><th>最低分</th></tr></thead><tbody><tr class="odd"><td>89.28</td><td>100</td><td>96</td><td>93</td><td>85</td><td>39</td></tr></tbody></table><h3 id="语文">语文</h3><p>单科分数:112</p><ul><li>单科分数班级排名:25</li><li>单科班级参考人数:48</li><li>单科班级年级排名:3</li></ul><table><thead><tr class="header"><th>平均分</th><th>最高分</th><th>四分位数(75%)</th><th>中位数</th><th>四分位数(25%)</th><th>最低分</th></tr></thead><tbody><tr class="odd"><td>110.88</td><td>129</td><td>119</td><td>112.5</td><td>107</td><td>34</td></tr></tbody></table><ul><li>单科分数年级排名:214</li><li>单科年级参考人数:696</li></ul><table><thead><tr class="header"><th>平均分</th><th>最高分</th><th>四分位数(75%)</th><th>中位数</th><th>四分位数(25%)</th><th>最低分</th></tr></thead><tbody><tr class="odd"><td>104.41</td><td>135</td><td>115</td><td>106</td><td>95</td><td>34</td></tr></tbody></table><h3 id="英语">英语</h3><p>单科分数:90.5</p><ul><li>单科分数班级排名:2</li><li>单科班级参考人数:48</li><li>单科班级年级排名:6</li></ul><table><thead><tr class="header"><th>平均分</th><th>最高分</th><th>四分位数(75%)</th><th>中位数</th><th>四分位数(25%)</th><th>最低分</th></tr></thead><tbody><tr class="odd"><td>77.27</td><td>95</td><td>83.5</td><td>79</td><td>71.88</td><td>49.5</td></tr></tbody></table><ul><li>单科分数年级排名:33</li><li>单科年级参考人数:695</li></ul><table><thead><tr class="header"><th>平均分</th><th>最高分</th><th>四分位数(75%)</th><th>中位数</th><th>四分位数(25%)</th><th>最低分</th></tr></thead><tbody><tr class="odd"><td>72.35</td><td>97.5</td><td>82</td><td>75</td><td>64.75</td><td>13</td></tr></tbody></table><h3 id="各科得分比例一览表">各科得分比例一览表</h3><table><thead><tr class="header"><th>总分</th><th>生物</th><th>数学</th><th>物理</th><th>化学</th><th>政治</th><th>语文</th><th>英语</th></tr></thead><tbody><tr class="odd"><td>0.656</td><td>0.840</td><td>0.960</td><td>0.840</td><td>0.940</td><td>0.800</td><td>0.747</td><td>0.603</td></tr></tbody></table><h3 id="各科班级排名一览表">各科班级排名一览表</h3><table><thead><tr class="header"><th>总分</th><th>生物</th><th>数学</th><th>物理</th><th>化学</th><th>政治</th><th>语文</th><th>英语</th></tr></thead><tbody><tr class="odd"><td>0.690</td><td>0.116</td><td>0.958</td><td>0.568</td><td>0.927</td><td>0.100</td><td>0.479</td><td>0.958</td></tr></tbody></table><h3 id="各科分层班级排名一览表">各科分层班级排名一览表</h3><table><thead><tr class="header"><th>数学 42P1</th><th>物理 A5</th><th>化学 45A5</th></tr></thead><tbody><tr class="odd"><td>0.935</td><td>0.568</td><td>0.927</td></tr></tbody></table><h3 id="各科年级排名一览表">各科年级排名一览表</h3><table><thead><tr class="header"><th>总分</th><th>生物</th><th>数学</th><th>物理</th><th>化学</th><th>政治</th><th>语文</th><th>英语</th></tr></thead><tbody><tr class="odd"><td>0.804</td><td>0.426</td><td>0.946</td><td>0.651</td><td>0.930</td><td>0.159</td><td>0.693</td><td>0.953</td></tr></tbody></table></div></div><script type="text/javascript">"use strict";!function(e){[].forEach.call(e.getElementsByClassName("spoiler"),function(e){e.getElementsByClassName("spoiler-title")[0].onclick=function(){e.classList.toggle("collapsed"),e.classList.toggle("expanded")}})}(document)</script><h2 id="section-6">2022.11.3</h2><p>第一次期中考试结束,虽然数学、化学、英语成绩还算理想,但数学、化学蒙的成分很大,同时其他科目暴露出很多问题。</p><ul><li>语文<ul><li>默写需要注意细节书写,如己、已的区分,其他连笔的问题等。</li><li>古文阅读丢了很多分,主要还是在具体的句意理解上出问题,像“非固开其为此,而禁其为彼也”说的是不必须这样不禁止那样,而不是开头这样结尾那样。</li><li>手法赏析题:具体手法+举例说明+好处。手法直接写出即可,举例说明引用的诗句也可以简写成“白诗中‘..’句”。</li><li>选择题如有不确定的选项或说法,打上问号,方便检查以及判断哪个错“更错”。</li></ul></li><li>生物:选择题上犯了太多低级错误,错了五道,都是不该错的,如:没看到“不正确的”、没注意 DNA 与 RNA 的区别,没注意原核与真核在合成蛋白上的区别。</li><li>物理<ul><li>选择题错三道不应该,尤其是多选题,问题主要出在没看清单位,时间和空间混淆、瞬时速度和平均速度混淆。</li><li>实验设计题测量高度也需多次取平均;测量较短时间量需要测量多次的总时间再换算。</li><li>计算最后一题真是不知道怎么扣的分,明明答案对了过程也没问题。(<em>物理就是针对我</em>)</li></ul></li><li>化学:离子方程式又一次没算进沉淀,同时还有多个反应漏考虑的问题。</li><li>英语:语法仍需重视,这次忘记了很多不定式的知识点,导致大量丢分。</li></ul><h2 id="section-7">2022.11.7</h2><p>这两天没什么考试,但是开始了课后服务时间的自选课(内卷),我忘填问卷,都默认了自习。</p><p>以及,今天英语课讲到圣诞节主题,让我展示了在杜伦生活时期的老照片。</p><h2 id="section-8">2022.11.8</h2><ul><li>化学:氧化还原有填入多个物质的题目,首先确定哪些物质变价,配平后再根据元素守恒确定余下物质。</li></ul><h2 id="section-9">2022.11.14</h2><ul><li>语文:总结了与...生活一天的想象类作文,我写得过于玄幻,要注意贴近生活。</li><li>数学:幂函数的分析可在第一象限内以 <span class="math inline">\((1,1)\)</span> 点为中心再次划分四个象限,函数只会过其中的 <span class="math inline">\(1,3\)</span> 或 <span class="math inline">\(2,4\)</span> 象限。</li><li>化学:关于缺项氧化还原的配平,先确定氧化还原的物质,配平后根据酸碱环境加入 <span class="math inline">\(\texttt{H}^+,\texttt{OH}^-,\texttt{H}_2\texttt{O}\)</span> 调节,这时根据电荷守恒一般较方便,最后用元素守恒检验。</li></ul><h2 id="section-10">2022.11.17</h2><p>好像所谓月考、统测也不怎么考了,最近都没什么可写的。</p><ul><li>数学:最近做题有点过度使用瞪眼法,虽然做得快,但准确度有所下降。</li><li>物理:三力平衡套路题,有时会用到全反力的性质,在斜坡上的全反力尤为讨厌;有时利用相似三角形推出力的大小关系。另一道烂题将绳与力的符号混淆,如审题不清极易搞混。</li><li>英语<ul><li>被动语态的语法填空出了异常多的错误,主要在于完成时与一般时态要注意区分。</li><li>课文背诵要提上日程。</li></ul></li><li>化学:有些题目要求写出未知的化学方程式,这时可以考虑各个物质的氧化性强弱等,确保符合反应前后的强弱关系,例如对于氧化性强的物质就应把还原剂,如 <span class="math inline">\(\texttt{Fe}\texttt{S}_2\)</span>,充分氧化成 <span class="math inline">\(\overset{3+}{\texttt{Fe}}\)</span> 与 <span class="math inline">\(\overset{6+}{\texttt{S}}\)</span> 等。</li></ul><h2 id="section-11">2022.11.23</h2><ul><li>数学:频率分布直方图纵轴是 <span class="math inline">\(\dfrac{频率}{组距}\)</span>。</li><li>英语:火车、飞机这类计划出发的动作要用一般现在时。</li></ul><h2 id="section-12">2022.11.25</h2><ul><li>英语<ul><li>完成时的判定还是太模糊,感觉可以找一些专项练习。<ul><li>要用过去完成时,得先有过去的时间点。</li><li>完成时需要影响持续到现在。</li><li><code>by the time</code> 要用完成时。</li></ul></li><li>听力题傻了,三道选择只做了两道...</li></ul></li><li>化学:课上不记笔记的后果显现了,有很多钠、氯及其化合物的方程式开始混淆,等有时间得好好整理一下。</li></ul><h2 id="section-13">2022.12.1</h2><p>好想返校,网课学习效率真不是一般的低。</p><ul><li>化学:又做了一些很抠细节的题:<ul><li><span class="math inline">\(\texttt{NaHCO}_\texttt{3}\)</span>、<span class="math inline">\(\texttt{Na}_\texttt{2}\texttt{CO}_\texttt{3}\)</span> 给了原溶液 <span class="math inline">\(\texttt{Na}^+\)</span> 浓度,完全加热蒸干,显然全剩下 <span class="math inline">\(\texttt{Na}_\texttt{2}\texttt{CO}_\texttt{3}\)</span>,问题出在一个分子有两个钠,所以前者浓度要除二才是后者浓度。</li><li><span class="math inline">\(1 \text{mol} \texttt{NaOH}\)</span> 吸收 <span class="math inline">\(0.8 \text{mol} \texttt{CO}_\texttt{2}\)</span>,问所得 <span class="math inline">\(\texttt{CO}_\texttt{3}^\texttt{2-}\)</span> 和 <span class="math inline">\(\texttt{HCO}_\texttt{3}^\texttt{-}\)</span> 占比,直接列二元方程就能解决。</li><li>除盐中混有的酸不一定非得用碱,也可以用碳酸盐之类。</li><li>忘了酸性氧化物与碱怎么反应。碱足量生成正盐和水,少量则生成酸式盐。</li></ul></li><li>物理:现在用上牛二了。有一道斜面上非平衡状态的计算开始纠结了半天,后来发现在与斜面垂直的分量上还是平衡的,依此求解。</li></ul><h2 id="section-14">2022.12.9</h2><p>(12.5-7高低烧不断,今天算是彻底好了)</p><ul><li>语文:得赶紧背默写篇目。</li><li>数学:向量.....遇到的几道难题都是判断共线,思路就是构造平行。</li><li>化学<ul><li>注意是氧化剂和氧化产物对比,还原剂和还原产物对比。</li><li>二价铁溶液是浅绿色,三价铁溶液是棕黄色。</li></ul></li></ul><h2 id="section-15">2022.12.14</h2><p>(好个鬼,现在还在咳嗽)</p><ul><li>数学:证明、判断平行的时候要注意零向量的坑。</li><li>物理<ul><li>在水中的物块,无论是自发上浮还是下沉,导致的结果都是重心下移,形成失重。</li><li>考虑超重、失重物体加速度的时候,不能看着力的图表就被绕进去了,还得考虑物体质量。</li></ul></li></ul><h2 id="section-16">2022.12.16</h2><ul><li>生物<ul><li>酶在酸碱环境中的变性是不可逆的,所以类似“pH从..到..的过程中,酶的活性逐渐增强”的说法是错误的。</li><li>要求设计对照组实验时,不仅要写如何处理,还要写测定的内容。</li></ul></li></ul><h2 id="section-17">2022.12.18</h2><p>物理统测来了</p><ul><li>物理<ul><li>一道离谱的坑是给了摩擦系数,但斜面却是光滑的。</li><li>另一道有点意思的坑在于砝码压纸纸抽出,要求砝码在桌面上运动最小距离所对应的抽出力大小。坑跳在忘记考虑纸完全抽出后砝码仍有速度。</li></ul></li></ul><h2 id="section-18">2022.12.20</h2><p>数学统测又来了</p><ul><li>数学<ul><li>十分愚蠢的随机数表题,我竟然没考虑到去重的问题,实在是愚蠢至极、愚蠢绝顶,好好问候一下出题人。</li><li>假如题目里说了是幂函数,那系数就是必须为 1 的。</li><li>分层抽样,抽出来的频率应该与原来完全相同,比如样本是2:3,先分层抽五个,再从中抽两个,相当于从两个加三个里面抽两个。</li></ul></li></ul><h2 id="section-19">2022.12.23</h2><ul><li>数学<ul><li>函数的大题涉及比较区间内大小的,要多往端点取值的方向想,很多时候硬解是解不出来的。</li></ul></li></ul><h2 id="section-20">2022.12.26</h2><ul><li>数学<ul><li>一个奇函数的信号:<span class="math inline">\(\log_2(a+b)\)</span>,<span class="math inline">\(a^2-b^2=1\)</span>,那么可以往 <span class="math inline">\(f(x)+f(-x)=\log_2(a+b)(a-b)=\log_21=0\)</span> 这个方向想。</li><li>均值求最值要把次数调配到零次,可以通过不断乘除恒等于 <span class="math inline">\(1\)</span> 的式子调配。</li></ul></li><li>化学<ul><li>硫单质不一定非得是 <span class="math inline">\(S\)</span>,<span class="math inline">\(S_2S_4S_6S_8\)</span>等等的可能性都得考虑。</li><li>大意了,<span class="math inline">\(NaHCO3+Ca(OH)_2\)</span> 也生成沉淀。</li><li>用碱石灰定量检测二氧化碳,末端处加的碱石灰装置是用于屏蔽空气中二氧化碳的,而且尽管图上画的很玄学,它一定是与大气联通的,不然气体没法流动。</li></ul></li></ul><h2 id="section-21">2022.12.28</h2><ul><li>化学<ul><li>有关氯的现象,是要写出黄绿色气体进入哪里的。</li><li>正四价的硫都具有强还原性,而稀硫酸中的硫不具有氧化性。</li><li>假如一些需要研究的氧化还原反应中加了酸或碱,要优先考虑它们是提供环境,而剩下的物质才是直接参与反应,这样容易很多。</li></ul></li><li>生物<ul><li>逆浓度梯度就算主动运输,所以被其他离子夹带着运输,间接消耗 ATP 的也算。</li><li>主动运输的“泵”也是一种 ATP 水解酶。</li><li>气体、水、脂类能自由扩散。</li><li>质壁分离失败的原因:死细胞;没有大液泡;浓度不够;溶质不合适。</li><li>酶__了某物,要答催化,其他的不行。</li></ul></li></ul><h2 id="section-22">2022.12.29</h2><ul><li>生物<ul><li>很诡谲的问题:为什么暗反应在叶绿体基质里?答:因为有暗反应所需酶分布。</li><li>得赶紧回看一下有些隐蔽的知识点了。</li></ul></li><li>物理<ul><li>答题都要写上公式,重点注意牛二和受力平衡。</li><li>类似“误差范围内”,“力的大小和方向”这样的表达要学会。</li></ul></li><li>语文:默写开始临时抱佛脚。</li></ul><h2 id="section-23">2023.1.9</h2><p>期末结束咯。</p><p>物理化学都出奇地差。物理是从开学到现在始终保持在平均分水平,没见提高。化学则是不稳定,时高时低,这次就特别低。</p><p>语文写了个残文,但老师仁慈没扣太多,导致语文的排名比物理化学都靠前。</p><p>数学过于大意了,选择填空都出了错,得重点关注一下了。后三道大题一共扣 <span class="math inline">\(7\)</span> 分,选择填空也扣了 <span class="math inline">\(7\)</span> 分。</p><p>生物是期中最烂的一科,现在倒好成了最好的一科了。</p><p>英语没啥好说的,不过完成句子出错不应该。史地政就更没啥好说的了,瞎答的历史地理排名竟比物理化学高,是年排也就是赋分后的结果,但反正我不选了。</p><p>现在主要关心的问题是怎么让物化生稳定下来,以及怎么提高语文。</p><ul><li>数学<ul><li>条件的变量要限制取值。<span class="math inline">\(|\log x-1|\)</span> 有两个解,写出条件:<span class="math inline">\(\log x_1-1=1-\log x_2=c\)</span>,一定还要限制 <span class="math inline">\(c=0\)</span>。这一点就两分!</li><li>证零点存在得用零点存在定理,结合单调性再分别构造正负值(可以分类讨论)。我伪证了,同样丢两分。</li></ul></li><li>物理<ul><li>为检查这一猜想,还需进行什么工作?做 <span class="math inline">\(F_1,F_2,F\)</span> 观察到形状类似平行四边形,还需做 <span class="math inline">\(F_1,F_2\)</span> 平行四边形,连对角线得 <span class="math inline">\(F'\)</span>,计算理论值与 <span class="math inline">\(F\)</span> 的大小长度比较,同时还需多做几组实验。</li></ul></li></ul><h2 id="section-24">2023.2.15</h2><p>开学了,感觉真好,比网课好多了。</p><ul><li>生物:关于遗传与变异的一道竞赛题,坑点在于“罕见隐性遗传病”则认为题目没有提及的人都是纯阴性。</li></ul><h2 id="section-25">2023.2.17</h2><p>第一周就很紧张。</p><ul><li>化学<ul><li>定量分析题可以从元素守恒,电荷守恒和电子守恒三个方面下手,有一种很鸡贼的方法叫平均价,可以处理没化成最简,带未知数的化合物,强行给这些非整数个的元素标上总的化合价,方便考虑总变价。</li><li>稀硫酸不能用来干燥,它自己还会逸出水。</li></ul></li><li>数学:三角函数值总是想当然当成弧度值看,比如 <span class="math inline">\(sin \alpha=\dfrac{1}{2}\)</span> 当成四十五度。很奇葩的错误。</li><li>英语:现在有了整理新词听写的新项目,很有趣,我也应该积累一些新词汇。</li></ul></div><div><ul class="post-copyright"><li class="post-copyright-author"> <strong>Post author:</strong> Alex</li><li class="post-copyright-link"> <strong>Post link:</strong> <a href="https://schtonn.github.io/blog/posts/t-note/" title="差劲、无聊记录">https://schtonn.github.io/blog/posts/t-note/</a></li><li class="post-copyright-license"> <strong>Copyright Notice:</strong> All articles in this blog are licensed under<a href="https://creativecommons.org/licenses/by-nc-sa/4.0/" rel="noopener" target="_blank"><i class="fa fa-fw fa-creative-commons"></i> BY-NC-SA</a> unless stating additionally.</li></ul></div><footer class="post-footer"><div 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class="nav-link" href="#section-3"><span class="nav-number">4.</span> <span class="nav-text">2022.10.23</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#section-4"><span class="nav-number">5.</span> <span class="nav-text">2022.10.24</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#section-5"><span class="nav-number">6.</span> <span class="nav-text">2022.10.29</span></a><ol class="nav-child"><li class="nav-item nav-level-3"><a class="nav-link" href="#总分"><span class="nav-number">6.1.</span> <span class="nav-text">总分</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#生物"><span class="nav-number">6.2.</span> <span class="nav-text">生物</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#数学"><span class="nav-number">6.3.</span> <span class="nav-text">数学</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#物理"><span class="nav-number">6.4.</span> <span class="nav-text">物理</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#化学"><span class="nav-number">6.5.</span> <span class="nav-text">化学</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#政治"><span class="nav-number">6.6.</span> <span class="nav-text">政治</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#语文"><span class="nav-number">6.7.</span> <span class="nav-text">语文</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#英语"><span class="nav-number">6.8.</span> <span class="nav-text">英语</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#各科得分比例一览表"><span class="nav-number">6.9.</span> <span class="nav-text">各科得分比例一览表</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#各科班级排名一览表"><span class="nav-number">6.10.</span> <span class="nav-text">各科班级排名一览表</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#各科分层班级排名一览表"><span class="nav-number">6.11.</span> <span class="nav-text">各科分层班级排名一览表</span></a></li><li class="nav-item nav-level-3"><a class="nav-link" href="#各科年级排名一览表"><span class="nav-number">6.12.</span> <span class="nav-text">各科年级排名一览表</span></a></li></ol></li><li class="nav-item nav-level-2"><a class="nav-link" href="#section-6"><span class="nav-number">7.</span> <span class="nav-text">2022.11.3</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#section-7"><span class="nav-number">8.</span> <span class="nav-text">2022.11.7</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#section-8"><span class="nav-number">9.</span> <span class="nav-text">2022.11.8</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#section-9"><span class="nav-number">10.</span> <span class="nav-text">2022.11.14</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#section-10"><span class="nav-number">11.</span> <span class="nav-text">2022.11.17</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#section-11"><span class="nav-number">12.</span> <span class="nav-text">2022.11.23</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#section-12"><span class="nav-number">13.</span> <span class="nav-text">2022.11.25</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#section-13"><span class="nav-number">14.</span> <span class="nav-text">2022.12.1</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#section-14"><span class="nav-number">15.</span> <span class="nav-text">2022.12.9</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#section-15"><span class="nav-number">16.</span> <span class="nav-text">2022.12.14</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#section-16"><span class="nav-number">17.</span> <span class="nav-text">2022.12.16</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#section-17"><span class="nav-number">18.</span> <span class="nav-text">2022.12.18</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#section-18"><span class="nav-number">19.</span> <span class="nav-text">2022.12.20</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#section-19"><span class="nav-number">20.</span> <span class="nav-text">2022.12.23</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#section-20"><span class="nav-number">21.</span> <span class="nav-text">2022.12.26</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#section-21"><span class="nav-number">22.</span> <span class="nav-text">2022.12.28</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#section-22"><span class="nav-number">23.</span> <span class="nav-text">2022.12.29</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#section-23"><span class="nav-number">24.</span> <span class="nav-text">2023.1.9</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#section-24"><span class="nav-number">25.</span> <span class="nav-text">2023.2.15</span></a></li><li class="nav-item nav-level-2"><a class="nav-link" href="#section-25"><span class="nav-number">26.</span> <span class="nav-text">2023.2.17</span></a></li></ol></div></div><div class="site-overview-wrap sidebar-panel"><div class="site-author motion-element" itemprop="author" itemscope itemtype="http://schema.org/Person"><p class="site-author-name" itemprop="name">Alex</p><div class="site-description" itemprop="description">blog</div></div><div class="site-state-wrap motion-element"><nav class="site-state"><div class="site-state-item site-state-posts"> <a href="/blog/archives"><span class="site-state-item-count">35</span> <span class="site-state-item-name">posts</span></a></div><div class="site-state-item site-state-tags"> <a 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