同义句1.l made a phone call to my friend last week.2.l didn′t go back home last night.3.
题目
同义句1.l made a phone call to my friend last week.2.l didn′t go back home last night.3.
答案
更正楼上第2题.1.l made a phone call to my friend last week.= I called (up) my friend last week.= I phoned (up) my friend last week.= I telephoned (up) my friend last week.= I rang (up) my friend last ...
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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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