my dream 英语作文两种时态100词左右
题目
my dream 英语作文两种时态100词左右
答案
my dreammy dream is to become a teacher,and it will be not an easy thing to do.why do i want to be a teacher?first,being a teacher has been one of my dreams since my childhood.when i was a small boy,i...
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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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