GWDverbal题号对，但是math不对,why?

sasazhazha

can anyone help？

I downloaded GWD1-31 from CD, (cant find hte link anymore), but I found that what I have doesn't match those shown on the discussion part, for math only, verbal is ok? Does anyone know why? 

很不方便啊，现在想对数学区的讨论，才发现没有一题是和讨论区里的题号对应的？

困惑中。。。。。急需各位的帮助！谢！