문제 내용: 어법상 옳은 것은?
선택지 1: The oceans contain many forms of life that has not yet been discovered.
선택지 2: The rings of Saturn are so distant to be seen from Earth without a telescope.
선택지 3: The Aswan High Dam has been protected Egypt from the famines of its neighboring countries.
선택지 4: Included in this series is "The Enchanted Horse," among other famous children's stories.