这句话错哪了?Americans eat more than twice as many vegetables per person today as they did in 1910

这句话错哪了?Americans eat more than twice as many vegetables per person today as they did in 1910

题目
这句话错哪了?Americans eat more than twice as many vegetables per person today as they did in 1910
我问的是语法上的错误!不许拿小孩子开涮啊!还高考呢
答案
我看了好久,眼拙`````以为无错也
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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
奥巴马演讲不用看稿子.为什么中国领导演讲要看?
想找英语初三上学期的首字母填空练习……
英语翻译
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