( ) he has made this term!A what a great progress B how a great progress C what great progress D
题目
( ) he has made this term!A what a great progress B how a great progress C what great progress D
( ) he has made this term!A what a great progress B how a great progress C what great progress D how great progress.这里各个选项的解释
答案
选 C what great progress
progress 不可数名词 （不可数 -排除 A, 名词 ——排除 B 和 D）
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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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