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高中课本听力北师大版模块7:Unit 21 Lesson2-1

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Unit 21 Human Biology Lesson 2 Brain Power
Exercise 2 Listen to a science lesson. Use the strategies to complete the gaps in this summary. Right, the topic of today's lesson is "the brain". Well... it is an absolutely amazing organ.The brain consists of grey and white matter. It weighs just over a kilo just imagine that, like a kilo of potatoes. But this is a very special kilo. It uses twenty percent of the body's energy. And it contains over one hundred billion cells that's a "billion" with a "b". One hundred billion cells.These make up nerve cells, which are connected by electrical impulses. The brain sends messages using electrical impulses, the same way as a computer works. But there are more possible connections in one brain than there are more atoms in the universe. Just think about that again. There are more possible connections in one brain than there are more atoms in the universe.
文本来源于在线英语听力室

重点单词   查看全部解释    
summary ['sʌməri]

想一想再看

n. 摘要
adj. 概要的,简略的

联想记忆
universe ['ju:nivə:s]

想一想再看

n. 宇宙,万物,世界

联想记忆
absolutely ['æbsəlu:tli]

想一想再看

adv. 绝对地,完全地;独立地

 

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