动物的睡眠（上）
We sleep in beds that are warm and soft. Where and how do animals sleep? 动物睡觉的姿势真是千奇百怪！African... the daytime?Do all animals sleep at night? Of course not! 除了猫头鹰之外，还有哪些上夜班的动物呢？How many of them do ……

动物为什么有各种各样的睡姿？ How do you sleep? Most people sleep on their backs or sides. Do animals sleep... that the animals’ sleeping postures (姿势) had something to do with their body size and weight. Small animals ……

How long do cats sleep? they sleep about 16 hours a day. ……

. By studying similarities and differences in when and how long different animals sleep, researchers hope to better understand why the need for rest is important to all animals.What is sleep?Scientists ……

动物睡觉趣事多多Humans sleep, as do animals. Every animal sleeps, from the smallest to the largest. March 15 is World Sleep Day (世界睡眠日). Let’s walk into the animals’ world and find out how they sleep ……

动物们的睡姿为何形形色色？You might sleep on your back or on your side. But not all animals do this. Cows, rabbits and horses all sleep in their own ways. ……

信不信由你
How long do lions sleep? About 20 hours a day! ……

. Some sleepers walk around when they fall asleep (睡着了). How long do animals sleep every day?How long do animals sleep every day?giraffe: 1.9 hoursgiraffe: 1.9 hourselephant: 3.5 ……

feel warm. How do animals spend the winter?Some butterflies fly to warm places for winter. Wild geese fly south for winter. They fly a long way. They fly in groups.Make a changeSome animals don’t fly ……

“缩骨功”让鼩鼱度过冬天。How do animals get through cold winters? Some animals sleep for the whole winter.... These rat-like animals shrink (缩小) their skulls (头骨) when winter comes and grow them back in the spring ……

Snow is falling. It’s cold. We wear coats and hats to keep warm. How do animals spend the winter... in the forest1 in Mexico. The forest is like a big umbrella. They won’t get cold or wet.How do ……

Like people and animals, plants also need sleep. Sunflowers sleep a lot. They always wake up at 10 am. ……

;– they can lie (躺) down, sit or stand while they sleep.How do you sleep? Most people sleep...   2   – they can lie (躺) down, sit or stand while they sleep.How do you sleep ……

动物们的冬天SNOW is falling. It’s cold. We wear coats and hats to keep warm. How do animals spend... in Mexico. The forest is like a big umbrella. They won’t get cold or wet.How do animals find their way ……

to people? How can we get good and healthy sleep? Let’s find out.OUR eyes are closed, our bodies...健康睡眠开启全新每一天。ALMOST every living thing sleeps, from the bees to the whales. March 16 is World Sleep ……