He is a man.( ) He is my father(
题目
He is a man.( ) He is my father(
He is a man.( ) He is my father( )
She is a student( )she is my sister (
)
This is my mother( )she is a teacher ( )
.哥哥姐姐,这些中文是什么,
答案
He is a man.(他是一个男人.）He is my father(他是我的爸爸.）
She is a student(她是一名学生.）she is my sister (她是我的姐妹.）
This is my mother(这是我的妈妈.）she is a teacher (她是一名教师.）
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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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