英语 role play 饭店点餐
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英语 role play 饭店点餐
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A:This way ,please.A:What would you like to eat?(Can take your order,please?)B:I would like to eat ( ) Hhmmm,add a piece of steak ,make it extra thick,please.A:Anything else?B:NO,thanks.B:How much are...
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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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