According to the author, which of the following reasons disrupt travelers’ sleep?

Câu hỏi :

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions .

A. Travelers try to sleep between 3-5 p.m. 

B. Travelers’ attention is reduced by 75 percent. 

C. The traveler’s internal circadian clock has to adjust to patterns of light and activity. 

D. Travelers fly in the natural direction of their internal clock

* Đáp án

* Hướng dẫn giải

Đáp án : C

Từ đầu đoạn cuối: One of the more common complaints of travelers is that their sleep becomes disrupted. There are many reasons for this: …, changing light and activity levels, … -> một trong những lí do gây rối loạn giấc ngủ là thay đổi trọng lượng và mức độ hoạt động

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