a pet can be something to each member of the family,
题目
a pet can be something to each member of the family,
后面一句是:a baby to the mother,a sister or brother to an only child,a grangchild to the old people.
答案
完整的是:a pet can be something different to each member of the family,another baby to the mother,a sister or brother to an only child,a grandchild to the elderly
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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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