Tom:holle!88234568.mary:holle!may I ( ) to please?Tom:sorry ,john ( ).
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Tom:holle!88234568.mary:holle!may I ( ) to please?Tom:sorry ,john ( ).
Tom:holle!88234568.mary:holle!may I ( ) to please?Tom:sorry ,john ( ).mary:Is ( ) Tom speaking?Tom:yes,who,s that?mary:( ) mary.where is john going now?Tom:john is ( ) to the cinema with his friends.may I take a mes-sage?mary:well ,ok.could you ( )him to ( )me at half past four?my ( ) is 46895277.Tom:ok.I,ll tell him when he comes back .mary:It,s very kind of you .thank you.
答案
Tom:holle!88234568.mary:holle!may I ( speak ) to John please?Tom:sorry ,john ( isn't here now ).mary:Is ( that ) Tom speaking?Tom:yes,who,s that?mary:( This is ) mary.where is john going now?Tom:john ...
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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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