How does orwell use irony in this excerpt? by using humor to demonstrate how few animals remember the rebellion by illustrating that the news of the rebellion was exaggerated for dramatic effect by building suspense about what the current animals know about the rebellion by showing that readers know more about the rebellion than most of the animals.

It depends on the subject for me. some exams are easier than others so i usually go through it and answer questions i know based on my general knowledge, then double check after. going through the lesson can a lot  because the exams can be  very lesson-specific, but sometimes they are ridiculously long so a lot of people don't take the time. i did find that, when i went through the lessons, i was making 100's on my exams vs strictly using + the internet and  i make 90's. 

Not the answer but here is the graph.