과천외고 3학년 수능 영어 유추 논증: 겉모양보다 작동 구조를 비교하기 실전문제

The stone arch and wooden bridge look different, but both transfer weight through supports. After one wooden support shifted, engineers recalled a stone bridge failure caused by misplaced supports. They chose to inspect the wooden bridge's supports first. They had not found a crack or chosen a repair.

A toy windmill and an electric fan both have blades. Moving air turns the windmill. Electricity turns the fan, which then moves air. During an outage the fan stopped, while the windmill kept turning in the wind.

Clearer lead voices improved a choir's timing. Rowers also coordinate their strokes, but they use both shouted calls and the boat's motion as cues. The coach plans to test clearer calls, without assuming that louder calls alone will make the boat faster.

A hand pump and an electric pump both move water through a valve. The hand pump gets force from a worker; the electric pump gets force from a motor. Last week both stopped. Inspectors found a blocked valve in the hand pump and a power failure in the electric pump. A later test found that the electric pump's valve was clear.