写下英语的缩略形式或完整形式,
题目
写下英语的缩略形式或完整形式,
haven't
are not
doesn't
did not
shall not
will not
when'll
what've
he's
you've
he is
had not
you're
cannot
hasn't
mustn't
wasn't
weren't
man's
hadn't
答案
have not
aren't
does not
didn't
shalln't
won't
when will
what have
he is
you have
he's
hadn't
you are
cann't
has not
must not
was not
were not
man is
had not
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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