1) It is not too difficult to take the postgraduate entrance examination for the history of Sichuan University, but only if you have a clear historical context and a comprehensive analysis of historical events. Basically, you can figure out the routine by doing several sets of real questions over the years ~ this difficulty is average. If you care about history and have a good memory, then there is no problem.
2) I'm not sure about the enrollment ratio. I'm not sure about several versions, but they are quite high. If you are the top 8 students, there must be ~ ~
3) The difficulty of English is basically the same as that of CET-6, but the examination method is different. You can send me a message to answer the specific test method.
Wish you all the best!