填入适当的词使句子完整
题目
填入适当的词使句子完整
⒈I‘m reading an e-mail _____________ Lucy.
⒉Let me tell you something _____________ myself.
⒊I bring a dictionary _____________ school.
⒋My mother is talking _____________ my English teacher now.
答案
⒈I‘m reading an e-mail ______from/to_______ Lucy.⒉Let me tell you something _____about/by______ myself.⒊I bring a dictionary ______from/to_______ school.⒋My mother is talking ______to/with______ ...
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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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