His sister went to school by bike yesterday.变一般疑问句、否定句、画His的特殊疑问句、画sister的
题目
His sister went to school by bike yesterday.变一般疑问句、否定句、画His的特殊疑问句、画sister的
特殊疑问句、画went to school的特殊疑问句
答案
Did his sister go to school by bike yesterday His sister didn't go to school by bike yesterday Whose sister went to school by bike yesterday Who went to school by bike yesterday What did his sister do...
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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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