around与about 区别
题目
around与about 区别
答案
aboutprep.1.关于,对于My mother often spoke to me about you.家母常和我谈起你.2.在...的附近;在...的周围She sat up and looked about her.她坐了起来,环顾四周.3.在...的身边I had no money about me.我身边没有...
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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