64. The subject of this passage is _____. (A)why people sleep (B)the human need for REM sleep (C)the characteristics of REM sleep (D)physical changes in the human body

70. It can be inferred from the passage that ___________. (A)killing foxes with poison is illegal (B)limiting the fox population is unnecessary (C)hunting foxes with dogs is considered cruel and violent (D)fox-hunting often leads to confrontation between the poor and the rich