30. 다음 글의 밑줄 친 부분 중, 문맥상 낱말의 쓰임이 적절하지 않은 것은? [3점] Let’s return to a time in which photographs were not in living color. During that period, people referred to pictures as “photographs” rather than “black‑and‑white photographs” as we do today. The possibility of color did not exist, so it was ① unnecessary to insert the adjective “black‑and‑white.” However, suppose we did include the phrase “blac..