"有一题语法:The frequency with which the corporation conceals mistakes proves......这个地方的考点主要是prove 有两个选项prove没加s。还有一个考点在with 后面是什么有一个选项就是上面这个,还有一个选项是how often the corporation conceals mistakes proves.我选了前者但是我成绩不怎么样所以不敢确定" Agreed. "Frequency" and "how often" seem redundant.