By serving others,a person focuses on someone other than himself……
题目
By serving others,a person focuses on someone other than himself……
By serving others,a person focuses on someone other than himself or herself,_____can be cery eye-opening and rewarding.
A.who B.which C.what D.that
问一下这一句为什么不可以关系代词指代 a person
答案
这道题是一个定语从句 who做引导词 the person 作为这个定语从句的先行词~
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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