I was born on 1st.January.和 I born on 1st.January.的区别?
题目
I was born on 1st.January.和 I born on 1st.January.的区别?
如题!我出生在1月1日.为什么是 I was born on 1st.January.那么I born on 1st.January.为什么不对啊?
答案
I was born on 1st.January.是正确的
没有I born on 1st.January.
你只能被生出来～
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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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