In chinese,______ date 2013-1-4 has a similar pronunciation to "love you for a life"
题目
In chinese,______ date 2013-1-4 has a similar pronunciation to "love you for a life"
making it ________most lucky and romantic day.
A.a;the B.不填;a C.the；a D.不填；the
答案
选C,前面是特指,后面是泛指
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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