英语翻译
题目
英语翻译
Did you enjoy yourself?I didn't have a good time.My parents and I went to visit Washingon,but there was a bad weather there.It snowed at the beginning of our trip till Monday when our class began.In Washington,I stayed at hotel for two days.On Saturday,I watched TV all day.On Sunday,I played computer games all day.My parents wanted to buy some gifts for their friends,but unluckily,every shop was closed,because the weather was so bad的中文!
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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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