谁能帮忙写个120个英文单词的自我介绍?
题目
谁能帮忙写个120个英文单词的自我介绍?
答案
Hello, its a pleasure to meet you all. I am Yu Lin Jeng. I am from Shanghai ,China. This is my third trip to the United States, and I really enjoy staying here. I am working for a trading company as a...
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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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