다음 글의 내용과 일치하는 것은?Soils of farmlands us… | [9급 지방직 영어] 17년 2회차 기출문제 상세 페이지

다음 글의 내용과 일치하는 것은?
Soils of farmlands used for growing crops are being carried away by water and wind erosion at rates between 10 and 40 times the rates of soil formation, and between 500 and 10,000 times soil erosion rates on forested land. Because those soil erosion rates are so much higher than soil formation rates, that means a net loss of soil. For instance, about half of the top soil of Iowa, the state whose agriculture productivity is among the highest in the U.S., has been eroded in the last 150 years. On my most recent visit to Iowa, my hosts showed me a churchyard offering a dramatically visible example of those soil losses. A church was built there in the middle of farmland during the 19th century and has been maintained continuously as a church ever since, while the land around it was being farmed. As a result of soil being eroded much more rapidly from fields than from the churchyard, the yard now stands like a little island raised 10 feet above the surrounding sea of farmland.

A churchyard in Iowa is higher than the surrounding farmland.

Iowa's agricultural productivity has accelerated its soil formation.

The rate of soil formation in farmlands is faster than that of soil erosion.

Iowa has maintained its top soil in the last 150 years.

글의 내용과 일치하는 것은 "A churchyard in Iowa is higher than the surrounding farmland."(아이오와의 한 교회 마당은 주변 농지보다 높다)이다.
마지막 문장에서 농지의 흙이 훨씬 빨리 침식되어 "the yard now stands like a little island raised 10 feet above the surrounding sea of farmland"(그 마당은 이제 주변 농지보다 10피트 솟은 작은 섬처럼 서 있다)라고 한다.
"Iowa's agricultural productivity has accelerated its soil formation."은 지문에 없는 내용이며, 오히려 표토가 침식되었다고 한다.
"The rate of soil formation in farmlands is faster than that of soil erosion."은 침식 속도가 형성 속도의 10~40배라는 내용과 반대이다.
"Iowa has maintained its top soil in the last 150 years."는 "about half of the top soil of Iowa ... has been eroded in the last 150 years"(지난 150년간 표토의 약 절반이 침식됨)와 어긋난다.