英语短文改错及答案;yesterday my husband received a letter from a lady who had been her student
题目
英语短文改错及答案;yesterday my husband received a letter from a lady who had been her student
in middle school
.she wrote it so she wanted to thank him for the greatly influence he had on her life
答案
yesterday my husband received a letter from a lady who had been her student
in middle school
改成yesterday my husband received a letter from a lady who was his student in middle school
举一反三
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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