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Which of the following is the main idea of the passage? .

单选题
2021-09-02 13:12
A、Evolution has equipped all creatures with a regular pattern of sleeping and waking.
B、The study of sleep is an important part of the evolutionary theory.
C、Sleeping patterns must be taken into consideration in the designing of robots.
D、The sleeping pattern of a living creature is determined by the food it eats.
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正确答案
A

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