用It is...of...to do sth ,It is...for...to do 结构各造三个句子
题目
用It is...of...to do sth ,It is...for...to do 结构各造三个句子
答案
It is clever of you to anwer the question.
It is kind of you to help me.
It is beautiful of you to charm me.
It is glad for me to see you.
It is sad for you to hear that.
It is bad for you to read in bed.
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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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