题目
我在这里已经工作2年了(现在还在这里上班),I have worked here for 2years 还是I have been working
here for two years?Or both are correct?Are there any differences between them?thank you very much!
那么,我已经洗了三个小时的衣服,也是 I have washed clothes for 3 hours 和 I have been washing clothes
here for two years?Or both are correct?Are there any differences between them?thank you very much!
那么,我已经洗了三个小时的衣服,也是 I have washed clothes for 3 hours 和 I have been washing clothes
提问时间:2020-08-02
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
奥巴马演讲不用看稿子.为什么中国领导演讲要看?
想找英语初三上学期的首字母填空练习……
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