글의 흐름상 다음 문장이 들어갈 곳으로 가장 적절한 곳은? This i… | [법원직 9급 영어] 09년 1회차 기출문제 상세 페이지

글의 흐름상 다음 문장이 들어갈 곳으로 가장 적절한 곳은?
 This is the keystone.
The Romans have just invented a new building technique: the arch. It is the strongest way to support walls and bridges. A master builder explains the process. ㉮"First, take some stone blocks and shape them as wedges.㉯Take another stone and shape it to fit perfectly in the middle of the arch. ㉰Use wood to hold the wedges together until the keystone can be placed in the middle. ㉱Finally, put stones on top of the wedges and build up the entire wall."

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