我们经常看到这样的情况:某同学学习极其用功,在学校学,回家也学,不时还熬熬夜,也做了很多习题,但成绩总上不去。本来,有付出就应该有回报,而且付出得越多回报就应该越多,这应该是天经地义的事。实际情 We often see such a situation: a classmate extremely hard to learn, learn in school, home also learn, from time to time also boil stay up all night, but also do a lot of exercises, but the results do not go up. Originally, there should be paid to pay, and pay more should be more rewards, this should be a matter of course. Actual situation