2017년06월17일 18번
[과목 구분 없음] 다음 글의 요지로 가장 적절한 것은?

- ① Response to stimuli is an important by-product of brain training.
- ② The intensity of stimuli increases with their repetition.
- ③ Our physical response to stimuli influences our thoughts.
- ④ New stimuli give rise to subjective time expansion.
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문제 해설