英语单项选择,并说明选择理由
题目
英语单项选择,并说明选择理由
6.As time _______,we know each other better.
A.goes by B.passed by C.went off D.going by
7.— How do you learn Chinese
— I learn it ______ reading more papers and magazines.
A.by B.across C.from D.with
8.Our English teacher told us some ways of _______English.
A.learn B.to learn C.learning D.teaching
答案
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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