精选优质文档-倾情为你奉上中考补全短文（六选五）复习专练一、What is the most stressful thing in school? It is probably exams. Exams can put us under a lot of pressure. But some students do well under pressure, while others feel terrible. 1. _ It all comes down to dopamine (多巴胺). 2._ It has many important roles: influencing memory, attention and how we learn. Our brains work best when there is an even balance（平衡）of dopamine not too much or too little. The brain controls dopamine in two ways. It
