初中英语单词填空
题目
初中英语单词填空
I changed into my sports shoes so that I could walk more c___.
Hi,Mike!What a p_____surprise to see you again.
I changed into my sports shoes so that I could walk more c______.
Susan got a bad cold and kept on c___all night.
答案
comfortable
big
comfortable
cough
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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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