It can be as simple as "I like graphs." Every time you feel bored, think about those graphs and repeat to yourself, "This is actually pretty interesting." Having the right attitude will improve your grades, period. The reason I don't need to study is that I make sure to understand everything the teacher says in class.
它可以簡單到 "我喜歡圖表"。每當你感到無聊時,就想想那些圖表,然後重複對自己說:"這其實很有趣。"有了正確的態度,你的成績自然會提高。我之所以不需要學習,是因為我確保理解老師在課堂上講的每一句話。