(1)Please write a name( )your document before you save it.
题目
(1)Please write a name( )your document before you save it.
(2)My sister usually buys CDs( )her favourite singers.
(3)The monkeys live ( )the jungle.
(4)The snakes come( )Africa.
(5)I want to ask Lucy ( )come to my home this evening.
答案
1.for
2.of
3.in
4.from
5.to
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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