第17章 我不服气（1 / 2）

而1班教室外，走廊尽头的小休息间里，吕炳春正在给付声答疑：“这里带入方程式，就能解得……”

门被人猛地推开，俞启瑞抱著本子风风火火地闯了进来。见付声还在，他也只能强忍不耐，抓耳挠腮地等在旁边，心里巴望著付声赶紧滚。

好不容易，才等付声弄明白了离开。他立刻凑上去：

“吕老师，这道题怎么解啊？”

吕炳春的第一思路，自然是正攻解法。他拿起一张草稿纸，一边写，一边细致地讲解著每一个步骤：“所以，用均值不等式可以知道……”

了快十分钟，俞启瑞总算是听明白了，他一拍大腿，恍然大悟道：“原来是这样！唉，还得是吕老师您讲得清楚！”

“怎么了？”吕炳春有些奇怪地问。

“嗨，別提了，”俞启瑞立刻开始打起了小报告，“刚才我也问了洛北来著。结果他嘰里咕嚕的，不知道讲了些什么。就非要用什么特殊值，钻题目的空子。我一听就不对劲，就赶紧过来问您了。”

“特殊值？”吕炳春更好奇了，“洛北是怎么讲的？你给我说说。”

俞启瑞见老吕问了，乐得马上把那道选择题，还有洛北的“特殊值法”添油加醋地说了一遍，重点强调洛北“態度不好”、“解法取巧”。

吕炳春听完，反应却出乎俞启瑞意料：“哦？这个法子，確实很聪明。”

“啊？”俞启瑞傻眼了。

“这是利用了『特殊性必然蕴含於一般性之中』的逻辑原理。”吕炳春解释道，“对於这道题，用特殊值法，的確比常规解法要快得多，也更不容易出错。是个好方法。”

“可……可这不是投机取巧吗？”俞启瑞依旧不服气，“要是知识点把握不牢，这道题会了，换个问法，刚好没法用特殊值的时候，那不就抓瞎了？”

“你说的也有道理。”吕炳春点了点头，话锋却一转，“但你要知道，高考，是一场限定时间决胜负的考试。它不仅仅看你会了多少，更看你做对了多少。如果有办法能更快、更准地把题目做出来，那就不应该把它批判成是歪门邪道。”

“不过，”吕炳春意有所指地看著俞启瑞，“你刚才的担忧也没错。如果基础没有打牢固，就沉迷於各种奇技淫巧，那只会分散注意力，迷惑心智，反而貽害无穷。”

俞启瑞完全没听出吕炳春是在点拨他：他的数学成绩，常年在115分上下，属於那种问题多、勤提问，看起来很努力，但实际上知识点掌握得一点也不牢的学生。

他高兴起来，觉得老吕这才说得像人话，自己明明就占理嘛：“就是嘛！我就说洛北讲得不对，他还衝我发火！”

吕炳春在心里默默地嘆了口气：洛北的数学，常年稳定在140分以上，你一个110上下浮动的，跟人家有可比性吗？

但他也不好太打击学生的积极性，只是温和地提醒道：“以后问其他同学问题，也要注意分寸。大家现在时间都很宝贵，不要太打扰別人了。”

俞启瑞嘴上应著，心里却觉得老吕其实还在偏袒洛北，所以对后者的劝告，那是一个耳朵进，一个耳朵出。

他偃旗息鼓地回到座位上，洛北连眼皮都没抬一下，对他刚才的这场风波，毫不在意。

他要做的，就只有刷级。

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……

光阴似箭，閒话休题。

本书首发101??????.??????,提供给你无错章节，无乱序章节的阅读体验

时间很快来到了五月中旬，高考前的最后一次三模，如期而至。同样是七市联考，这次的难度参照往年惯例，显得分外慈眉善目。目的，就是提振考生信心，別把孩子嚇得不敢高考了。

试卷，果然很简单。就连俞启瑞这等懂哥从考场出来，都连连拍著胸脯，大呼“哥这把稳了，那必定衝上六百二啊”。

不过，年级排名出来的时候，某个高悬在榜首的名字，再次让整个高三年级为之侧目。

洛北，总分703，年级第一。