Why does the writer say "You might be forgiven for thinking that..."? The experiments led by Allan Rechtaschaffen and Bernard B

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问题 Why does the writer say "You might be forgiven for thinking that..."?
The experiments led by Allan Rechtaschaffen and Bernard Bergmann at the University of Chicago ______.

选项 A、couldn’t prove that sleep matters
B、allowed the control rats as much sleep as possible
C、showed that sleep is still fundamentally mystery
D、kept the experimental rats up all day and all night

答案D

解析 本题为细节题。第二段第二句说,他们在可控制睡眠时间的环境中让实验鼠日夜不睡觉。"around the chock"即意为"all day and all night"。
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