新视野视听说 B1 P118 U7_2_2_3

Part 3 B: Who sleeps the most? Let me think. Um, it can’t be the human baby, can it? And 13. monarch noun [ C ] UK /ˈmɒn.ək/ US /ˈmɑː.nɚk/ a king or queen 君王；国王；皇帝；女王；女皇 it’s not the black bear. A: It must be the sloth. They spend most of their lives asleep. B: So what’s the answer? C: Well, the black bear sleeps for about 7 months a year. The females are even half asleep when they have their babies. B: Wow. C: Human babies usually sleep about 18 hours a day, but only in their first few months. So sloths are the winner. They sleep 15 to 18 hours a day for their whole life.