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- 1在括号里填上合适的符号,可以添小括号,使等式成立：5（ ）5（ )5( )5=5
- 2为什么水解盐会促进水的电离?
- 3函数f(x)=ln(-x^2+2x)的单调递增区间
- 4醉翁亭记的主题是什么
- 5It started to rain. He stops ______ (work) and goes home. 是填working还是to work?为什么?
- 6我的哥哥喜欢穿流行的衣服.翻译.My brother likes __ ___ ___.
- 7地球面临的危害.急~~
- 81.Good!() I know () name?-Robert.2.Yes,but () very well.I want to learn more () it.
- 9It's a pity that I missed the bus because I got up late 用虚拟语气
- 10学校买来36盒红色粉笔,红色粉笔与白色粉笔的比是2比9,买来白色粉笔多少盒