China025,
题目
China025,
Where exactly are you located -- what country,city and time zone?I'm in Denver,USA,which is GMT -7.We will probably need to set a mutually convenient time by email.Also,do you have broadband?If so,you should download and install the free TeamSpeak client software located here:
You'll need a headset with a microphone.
顺便翻译一下
答案
GMT
abbr.
Greenwich Mean Time 格林尼治标准时间
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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