★四年级英语作文:My English teacher带中文意思姓许24岁
题目
★四年级英语作文:My English teacher带中文意思姓许24岁
答案
my english teacherhi,today I want to intoduce my English teacher to you.He/She is Mr/Miss Xu,he/she is 24 years old now,she is a perfect teacher,she taught me a lot things,I like her very much,I hope ...
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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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