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刘禹锡的《乌衣巷》中,表明季节的诗句是_____________;写出了作者对沧桑变化无限感慨的两句诗是________
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x,y∈R+,满足f(xy)=f(x)+f(y),x>1时,f(x)>0,f(6)=1,求f(x+3)
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V补全对话A:Have you ever been to Harbin?B:______ I have never be
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how i miss her,i am looking forward ()her;he was looking for
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请教一句英文名言的中译,The spectacular achievements are always preceded
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