she has many books,only one pf which is interesting可以用them代替which吗
题目
she has many books,only one pf which is interesting可以用them代替which吗
答案
不可以.因为she has many books和only one of them is interesting是两个并列的句子,它们之间必须用连词连接才行（she has many books and only one of them is interesting）或者分别为一个句子She has many books ...
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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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