题目内容
（请给出正确答案）
[主观题]
Though scientists are dubious about some experiments, they believe that______.A．the body's
Though scientists are dubious about some experiments, they believe that______.
A．the body's minimum temperature comes during the deepest sleep, typically at around 5 a.m.
B．by attempting to get warmer than usual, the rats must want to trigger sleep-inducing neurons
C．part of the function of sleep is to cool down the brain
D．hibernation in this daily period benefits animals
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