You may do these exercises_____ in class____ after class , but you must finish them this afternoon.
题目
You may do these exercises_____ in class____ after class , but you must finish them this afternoon.
答案
either .or.
“或者.或者.”
全句的中文是说,这些练习可以课上做也可以课下做,但是今天下午必须得做完
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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