[9급 지방직 영어 2026년 17번]

The gap probably had more to do with each school’s resources than with a student’s daily ration of chocolate cereal.

We’ve all heard that kids who eat breakfast do better in school. ( ① ) It makes sense; it’s hard to focus on an empty stomach. ( ② ) But despite their best attempts, researchers haven’t been able to pinpoint why breakfast aids learning―if that’s even the case. ( ③ ) A study of elementary school students found that, in some schools, kids behaved better after they ate breakfast; in other schools, they acted worse. ( ④ ) Students at well-equipped schools behave better regardless of their diet.