用过去式写 my birthday party 50字
题目
用过去式写 my birthday party 50字
答案
Last sunday,I took park in a birthday,that was held to my classmate.The party was very interesting,we were singing,dancing and played many games.We also sung birthday song to the classmate,and ate tasty birthday cake.We were really enjoy.
举一反三
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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