다음 글의 밑줄 친 부분 중 어법상 옳지 않은 것은?In 2000, s… | [법원직 9급 영어] 18년 1회차 기출문제 상세 페이지

다음 글의 밑줄 친 부분 중 어법상 옳지 않은 것은?
In 2000, scientists at Harvard University suggested a neurological way of ①explaining Mona Lisa’s elusive smile. When a viewer looks at her eyes, the mouth is in peripheral vision, ②which sees in black and white. This accentuates the shadows at the corners of her mouth, making the smile ③seems broader. But the smile diminishes when you look straight at it. It is the variability of her smile, the fact that it changes when you look away from it, ④that makes her smile so alive, so mysterious.

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