以“my happy vacation"写一篇不少于100单词的英语作文拜托了各位
题目
以“my happy vacation"写一篇不少于100单词的英语作文拜托了各位
答案
My happy vacation .Last summer ,I had a good time .I went to visit my cousin.We played computer games everyday.In addition,we also studied together everyday.We all were very happy.Because we hadn't se...
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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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