She went to Hunan Province three weeks ago ,and she‘s still there weeks.同义句
题目
She went to Hunan Province three weeks ago ,and she‘s still there weeks.同义句
She _____ ______ _____ Hunan Province three weeks.
答案
She went to Hunan Province three weeks ago ,and she‘s still there weeks.
She _has been in__ Hunan Province three weeks.
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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.
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