be good at,be good with,help sb with sth造肯定句、再改为一般疑问句.
题目
be good at,be good with,help sb with sth造肯定句、再改为一般疑问句.
答案
you are good at math.你数学很好.Are you good at math?I would be able to do much better with a good computer要是有一台好电脑,她能干得更好.Would you be able to do much better with a good computer?She pr...
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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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