mary has __high fever and she has to be in __hospital
题目
mary has __high fever and she has to be in __hospital
答案
Mary has _a_high fever and she has to be in _不填_hospital .
第一个中：have a high fever表示“发高烧”的意思.
第二个中：in hospital表示“生病住院”的意思.
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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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