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精彩回答
The mother didn't know___________ is to blame for the broken glass as it happened while she was out.
1年前
These wild flowers are so special that I would do ________ I can do to save them. [ ]
1年前
已知函数f(x)=x^3-3x^2+a,若f(x+1)是奇函数,则曲线y=f(x)在点(0,a)处的切线方程是___
1年前
从梯形上底的一点向下底引一条线段,这条线段就是梯形的高______.(判断对错)
1年前
1年前