The second method is the cross method, and all topics are inseparable. As long as the examiner's intention is mastered, the landlord first takes a simple topic, does it, looks at the required method, and then collects similar topics to give the difficult one a surprise.
When taking an exam, don't blindly try to solve a problem, because sometimes your brain will be short-circuited. When doing the following questions, people sometimes have a whim. Even if they come out, don't worry about the last question if there is a landlord. Check it carefully. If you get other scores, it won't be too bad.
Hope to adopt, thank you.