英语翻译
题目
英语翻译
他经常花2个小时完成作业 两种写法
她花了100元买了那条裙子 三种写法
答案
It often takes him two hours to finish his homework.
He often spends two hours finishing his homework.
She spent 100 yuan buying that skirt.
She paid 100 yuan for that skirt.
That skirt cost her 100 yuan.
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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