请给我一篇英语作文——We had a happy weekend 不少于五句,
题目
请给我一篇英语作文——We had a happy weekend 不少于五句,
答案
We had a happy weekend.On Saturday morning ,my family got up at 6:30.We had our breakfast at 7:30 at home.Then we went to climb the mountains.It took us half an hour to reach the top of the mountain.We began to do some exercises.We were busy with it for a long time.We had our "great meal"at last.Both of us were very tired,but we had a happy weekend.
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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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