There are about ____students working on the farm. A.three hundreds B.three hundred of
题目
There are about ____students working on the farm. A.three hundreds B.three hundred of
应该选哪个,说明理由
There are about ____students working on the farm
A.three hundreds B.three hundred of C。three hundred
答案
答案是C
1 如果是B的话,必须是：There are about __B__ the students working on the farm------of後面加个the
2 A 怎麼都不能成立.
（祝你愉快.）
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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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