用 be careful of 造句
题目
用 be careful of 造句
答案
例句:Be careful of the dog; it sometimes bites people.留心那条狗,有时候咬人.Be careful of that horse it often kicks.小心那匹马--它常尥蹶子.Be careful of that viper; he is dangerous.小心那个阴险的人,他...
举一反三
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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