帮我解决两道英语选择题
题目
帮我解决两道英语选择题
His failure in the exams _____ in part _____ his laziness.
A. resulted...from B.came up...with
Mary _____through the English novel in the morning and got the general idea of
it.
A.skimmed .slipped
答案
A resulted from 他考试没过,部分原因是因为他的懒惰 表示原因
A skimmed skim是浏览 slip是滑过
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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