다음 글의 흐름상 어색한 문장은?In 1974, F. Sherwood … | [지역인재 9급 영어] 26년 1회차 기출문제 상세 페이지

다음 글의 흐름상 어색한 문장은?
In 1974, F. Sherwood Rowland and his colleagues showed how chlorofluorocarbons (CFCs) were destroying the ozone, the thin layer of molecules shielding the earth from harmful ultraviolet rays. ① It was monumental work that earned them the active opposition of the chemical industry. ② Workers should be warned that CFCs are specially hazardous when used in confined spaces. ③ But Rowland and his colleagues stood firm, publicly warning about the dangers of CFCs. ④ After British researchers found a hole in the ozone over Antarctica in 1985, nations signed a treaty banning CFCs, and in 1995 Rowland and two colleagues won the Nobel Prize for Chemistry. Their careers and courage are object lessons for a world that is still debating climate change.

It was monumental work that earned them the active opposition of the chemical industry.

Workers should be warned that CFCs are specially hazardous when used in confined spaces.

But Rowland and his colleagues stood firm, publicly warning about the dangers of CFCs.

After British researchers found a hole in the ozone over Antarctica in 1985, nations signed a treaty banning CFCs, and in 1995 Rowland and two colleagues won the Nobel Prize for Chemistry.

흐름상 어색한 문장은 "Workers should be warned that CFCs are specially hazardous when used in confined spaces."이다.
글은 Rowland 연구진이 염화불화탄소의 오존 파괴를 밝히고 반대에 맞서 인정받기까지의 과정을 다룬다. 이 문장은 밀폐 공간의 작업자 안전을 말하고 있어 흐름에서 벗어난다.
"It was monumental work ...": 연구가 화학 업계의 "active opposition"(적극적 반대)을 불렀다는 내용으로 앞 문장의 연구를 잇는다.
"But Rowland and his colleagues stood firm ...": 업계의 반대에도 굽히지 않았다는 내용으로 흐름에 맞다.
"After British researchers found a hole ...": 오존 구멍 발견, 금지 조약, 노벨상 수상이라는 결과를 제시해 글의 흐름을 마무리한다.