7 According to the passage, which of the following pairs best explains the difference between good and poor sleepers?
(A)Mammals and reptiles
(B)Predators and prey
(C)Carnivores and vegetarians
(D) Adults and babies
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統計: A(11), B(28), C(14), D(1), E(0) #2140783
統計: A(11), B(28), C(14), D(1), E(0) #2140783