Đáp án D
Kiến thức về từ vựng
A. renewed: làm mới
B. transformed: biến đổi
C. exchanged: trao đổi
D. repeated: lặp lại
Giải thích: The meal varies each day until the sixth day. On that day, the menu is repeated and the astronaut eats the meals he had on the first day.
(Các bữa ăn thay đổi mỗi ngày cho đến ngày thứ sáu. Vào ngày hôm đó (tức sau ngày thứ 6), thực đơn được lặp lại và phi hành gia ăn những bữa ăn anh ta có trong ngày đầu tiên.)
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