问答题.what can you see?how much is it?how much are they?
题目
问答题.what can you see?how much is it?how much are they?
上面是问题,写答题
答案
这得看对象是什么了,否则没法答呀
举几个例子：
what can you see?
-------I can see many apples on the table.
-------I can see a duck swimming in the lake.
how much are they?
-------They are 5 dollars each.
how much is it?
-------It is 15 dollars.
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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