They sleep at any time during(在……期间) the day or the night. Most fish sleep with their eyes open. They don't have eyelids(眼皮)! So they can't close their eyes! 相关知识点: 试题来源: 解析 They sleep at any time during the day or the night. Most fish sleep with their eyes ...
Whales and dolphins aren't fish. They have to rise to the surface for air. They sleep by resting half the brain at a time. The other half remembers to come up and breathe!词汇 predator /'predato(r)/ n.捕食性动物detect/di'tekt/ v.察觉速记eyelid /'arlid/ n.眼皮still /stil/ adj....
"Ideally, in order for us to sleep well, there needs to be a fractional temperature difference between our body and our brain — a warm body and a cool head!" “理想情况下,为了让我们睡得好,我们的身体和大脑之间需要有一个小小的温差,身体要温暖,而头部要凉爽!” 1. Put your bedding in th...
If we do not sleep properly, we will always be tired, cranky and unhappy. This is because when we sleep, the body also gets a chance to clean itself of waste and other by-products of cell functions within our bodies. So, fish also need to sleep, so that they can repair their cells...
"The wa animals have to protect their eggs, but they also have to sleep," he said. "So the question is. How do they sleep when they are facing such a big problem?"羊Libourel's team put devices (装置) on 14 penguins to follow their brain activity for about 11 days.What the ...
the passage will be read sentence by sentence, or phrase by phrase, with intervals of 15 seconds. The last reading will be done at normal speed again and during this time you should check your work. 听力原文: Sunrise, Sunset Has it ever seemed to you like sunsets take longer than sunris...
They give oxygen to the water. Plants help in other ways, too.Fish can nibble(轻咬)on the plants. They hide in the plants and sleep, lay eggs there.Both the plants and fish need light. You can put near a window. It will get light there. But remember: a window may let cold air...
When a fish sleeps, it exists in a seemingly listless state in which the fish maintains its balance but moves slowly. If attacked or disturbed, most fish can dart away. A few kinds of fish lie on the bottom to sleep. Most fish do not have eyelids, so they cannot close their eyes to...
In addition, we have put an end to junk food, eat healthy food, to prevent the harmful effects on the body element. with the development of economy and society, we can choose the food more and more, if only to choose according to his be fond of a single food, youll absorb less tha...
Now they were sitting in a nice (72) c___ shop. Suddenly his father asked the waiter to put some salt in his coffee. Leo was surprised. His father smiled and said, “Before you were born, your mother and I often had (73) f___ playing in the sea. We could taste the sea, ...