小学六年级下册英语人教版活动手册16页的答案
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小学六年级下册英语人教版活动手册16页的答案
答案
3.(1)Did go didnot (2)will do will-piant will piant(3)are doing are-singing dancing are singing are-singing（4）Did go didnot Did go didnot-go helped (5)Does go does does shop (6)came Did have leaved...
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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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