1.
(a) According to a recent productivity study at Harvard, taking a nap at work may be a productive thing to do.
(b) Thirty people in the study were tested four times a day on how quickly they could process information.
(c) It was found that the people who napped for half an hour during the day did better than those who stayed awake the whole day.
(d) Indeed those who did not take a nap showed a decline of 50% in their ability to process information.
답이 (c) 인데,, 어디가 틀린지 모르겠습니다..ㅠ
2.
(a) Angela Rixon is a celebrated author of books about animals.
(b) Her interest in animals, however, extends beyond authorial one.
(c) She also works as a professional animal photographer for naturalist magazines.
(d) So, she often goes on photographic safaris through Africa and South America.
답이 (b) 인데 이것도 어디가 틀렸을까요...





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2. her interest 가 아닌 her interests 가 맞음
1. 연구조사의 결과는 항상 현재시제를 써야해요. 따라서 ~ people who nap for half an hour during the day do better than those who stay awake the whole day. 라고 현재시제로 써야해서 c가 틀렸구요.
2. interest는 여기서 가산명사로 쓰였기 때문에 beyond an authorial one으로 써줘야 해요.