We often have dinner togetherThen we go out to see the beautiful city in the car中文
题目
We often have dinner togetherThen we go out to see the beautiful city in the car中文
We often have dinner together.Then we go out to see the beautiful city in the car中文
答案
我们经常一起吃晚饭,然后再乘车观赏城市的美景
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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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