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课件网) UNIT 9 HUMAN BIOLOGY LESSON 2 BRAIN POWER Listening Learning objectives 1. To listen and talk about the human brain and brain power. 2. To listen for general understanding and for specific information. 3. To listen to formal and informal talks. 4. To learn and practise using expressions that ask for and give advice. Preview atom n.原子 atomic adj. 原子的; 原子能的; nerve n.神经；焦虑，紧张 nervous adj. 神经紧张的； organ n.器官 organic adj.有机的；器官的 contain vt.包含，容纳，装盛 container n. 容器 locate vt.&vi.找出……的准确位置 location n. 位置 be located in/at 位于…… zone n.地区，地带 time zone 时区 comfort zone 舒适区 intake n.摄入量，摄取量 take in 吸收，领会；欺骗 Group Work Match the words from the box with their definitions. atom nerve billion cell organ ( ) 1 one thousand million ( ) 2 a part of the body that has a particular purpose, e.g. the heart ( ) 3 the smallest piece of something that can exist alone ( ) 4 a tiny pat of the body that helps carry messages to and from the brain ( ) 5 a unit of living matter billion organ atom nerve cell Lead-in How much do you know about the brain Different areas of the brain are responsible for different functions. Pre-listening ( ) 1 The brain consists of only white matter. ( ) 2 The brain weighs just over a kilo. ( ) 3 The brain contains about one billion cells. ( ) 4 The brain uses 10% of the body’s energy. ( ) 5 The brain sends messages in the same way as a computer works. ( ) 6 There are more possible connections in your brain than there are atoms in the universe. Before listening to a lecture about the brain, read the statements and predict whether they are true or not. While-listening Listen to the lecture and check your answers. Correct the false ones. ( ) 1 The brain consists of only white matter. ( ) 2 The brain weighs just over a kilo. ( ) 3 The brain contains about one billion cells. ( ) 4 The brain uses 10% of the body’s energy. ( ) 5 The brain sends messages in the same way as a computer works. ( ) 6 There are more possible connections in your brain than there are atoms in the universe. grey and white matter F T F F T T one hundred billion cells 20% What matter does it consist of How much does it weigh How much body’s energy does it use How many cells does it contain How are messages sent The brain cells make up _____, which are connected by _____. The brain sends messages using _____. What have we learnt about the brain in the last ten years There are different areas in the brain, which are _____. We now know which parts of the brain _____ different parts of our _____from them. The brain also has different areas for different kinds of _____. You have one area for your _____ and another area for _____. Listen again. Complete the information you hear about the brain. Then tell your partner what you have learnt about the brain. Just over a kilo 20% Over 100 billion cells nerve cells electrical impulses electrical im ... ...
