而在我看来，剑桥测试体系，就是给我们三线城市的父母，提供了一个横向观察、比较教育发达城市娃英语水平的标准。
有些家长，光是找老师组一对水平相当的口语搭子来指导口语专项，也要两千多。
如第 six 章所述，光诱导的电子转移可以分为两种情况：电子供体的激发和电子受体的激发，表示为 D*+A → D+•+A−• → D+A+hν（D 将激发态电子转移到 A 的 LUMO，接着电子从 A 的 LUMO 回到 D 的基态轨道而发光）和 D+A* —→ D+•+A−• → D+A+hν（A 被激发后，D 将 HOMO 电子转移到 A 的 HOMO 或空穴，接着处于 A 激发态电子跃迁至 D 的 HOMO 而发光）。
即便有一些重大考试，也只是体现特定区域内的水平。比如中考体现的是全市水平，高考体现的是全省水平（上海、北京的英语高考卷就比全国卷要难度大）。
知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。
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如果以上这三个考试理由都不是你的“菜”，都不对你的“胃口”，那么，剑桥确实可以不用考。毕竟考它，也是要花钱、花时间的。
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一夜之间，你的“竞争对手”或是“参照对象”，就跳出了本市、本省等熟悉的范畴，你就能和北上广深、港澳、日韩、东南亚、欧洲那些英语非母语的孩子，共同在这门外语学习上，进行横向、客观的比较。
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从而相对准确的了解到自己在整体水平、专项水平上的差异，进而方便作出调整。
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