Recently ,a new lake has been built in the biggest park.the lake is alive ---------------fish
题目
Recently ,a new lake has been built in the biggest park.the lake is alive ---------------fish
A.of B.with C.to 为什么,选C好不好,为什么,应选什么
答案
be alive with充满,盖满了(活的东西)；be alive to对……了解,对(危险等)警惕
选B
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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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