醉酒驾车 对现象后果及建议写一篇八十词英语短文
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醉酒驾车 对现象后果及建议写一篇八十词英语短文
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People are getting richer and richer nowadays.That why You can see a lot of cars passing by everyday.But have you ever thought of that:maybe one of the car is driven by a drunk driver?Drunken driving ...
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已知函数f(x)=x,g(x)=alnx,a∈R.若曲线y=f(x)与曲线y=g(x)相交,且在交点处有相同的切线,求a的值和该切线方程.
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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