Walking dogs is a kind of__1__ and it can make old people feel less__2__ Animals such as fish,
题目
Walking dogs is a kind of__1__ and it can make old people feel less__2__ Animals such as fish,
---tortoises are also people's pet
1.A.game B.job C.meeting D.exercise
2.A.angry B.frightened C.lonely D.happy
答案
DC
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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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