I do not know those students because they are new___(face)to me
题目
I do not know those students because they are new___(face)to me
答案
I do not know those students because they are new (faces,脸,名词复数) to me.
我不认识那些同学,因为他们对我来说,都是新面孔.
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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