求小学英语介词练习题
题目
求小学英语介词练习题
in on under between behind next to
答案
I put my books_my bag.there are some apples _the table?look!who is the girl _the tree?There is a road _the bank and the school.Our school is _the tall building.The shop is __the market.这些介词的用法...
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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