感恩老师或父母的英语作文70-90词
题目
感恩老师或父母的英语作文70-90词
答案
给爸爸、妈妈的一封感恩信Dear dad and mum,Today is Thanksgiving Day, so I want to write a letter to you. I know you are kind and helpful to me. You cook meals and wash clothes for me every day. At the ...
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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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