밑줄 친 부분 중 어법상 가장 옳은 것은?Severe acute res… | [9급 서울시 영어] 19년 1회차 기출문제 상세 페이지

밑줄 친 부분 중 어법상 가장 옳은 것은?
Severe acute respiratory syndrome(SARS) is a serious form of pneumonia. It is caused by a virus that ① identified in 2003. Infection with the SARS virus causes acute respiratory distress and sometimes ② dies. SARS is caused by a member of the coronavirus family of viruses(the same family that can cause the common cold). It ③ believes the 2003 epidemic started when the virus ④ spread from small mammals in China.

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