1、北师大 高二 Unit 21,Unit 21 Human Biology,Lesson 2 Brain Power,Match the Key Words with the definitions (1-5).,atom, billion, cell, nerve cell, organ,1. one thousand million 2. a part of the body that has a particular purpose, e.g. the heart, the liver 3. the smallest piece of something that can exist al
2、one 4. a tiny part of the body thathelps carry messages to and from the brain 5. a unit of living matter,billion,organ,cell,atom,nerve cell,Listen to a science lesson. Use the Strategies to complete the gaps in this summary.,The brain consists of grey and (1) _ matter. It weighs (2) _. It uses (3) _
3、of the bodys energy. It contains over (4) _ which make up nerve cells. These nerve cells are connected by electrical impulses. There,white,just over a kilo,20,100 billion cells,brain than there are (5) _ _. Scientists have mapped different areas of the brain which are responsible for (6) _. The area
4、s of the brain related to controlling (7) _ could be compared to miniature film studios.,different functions,sight and hearing,are more possible connections in one,Our eyes and ears send signals (8),picture of the outside world. Scientists have also identified areas responsible for different emotion
5、s, such as (9) _, love and laughter. There are also different areas for different types of thinking, such as learning your own language and learning a (10) _ language.,fear,foreign,_, and it is our brain that interprets these signals and builds up a,all the time,1. How do you think the teacher feels
6、 about his subject?,Listen to the lesson again and answer these questions.,Enthusiastic.,2. What example does he use to explain the way the brain controls different parts of the body?A computer. 3. What does he compare to a film studio?The areas of the brain related to controlling sight and hearing.
7、,Listen to a student phone-in programme about revising for exams and complete the table.,Caller,Advice,Caller 2,get some exercise, dont drink a lot of coffee,Caller 3,give yourself rewards and a break,Caller1,plan the revision, make a list of the things youve got to study and do the most important t
8、hings first,Listen again and complete the Function File with theses words.,must, ought to, should, shouldnt, advise, need to, if I were you, have got to, could, theres no point, its important to, what tips, I find that,Giving and Asking for Advice,You (1) _ eat a healthy diet and get enough sleep. (
9、2) _ have you got for me and our listeners? I think (3) _ plan your revision. I think you (4) _ make a list of all the things youve got to study.,must,What tips,its important to,should,(5) _ you give us some advice? (6) _, Id get some exercise. You (7) _ get some fresh air. You (8) _ drink lots of c
10、offee. You (9) _ give yourself rewards. Id (10) _ you to treat yourself. You (11) _ give yourself a break. (12) _ after a certain amount of time I cant concentrate any more and (13) _ in that.,Could,If I were you,ought to,shouldnt,need to,advise,have got to,I find that,theres no point,Vocabulary: Ph
11、rasal Verbs,Match the words and expressions below with the verbs in the text.,appear, discover, look atin detail (2), make a note of, mention, pass, postpone, start, understand, learnfrom,Last month, I had an important English exam. I decided not to put (1) _ off studying (as I normally do!) and got
12、 up early every morning to get down to,postpone,(2) _ work straight away. Im a “morning person” and I got a lot out of (3) _ my revision sessions. I always began by going over (4) _ a practice test I had done - checking my answers and finding out (5) _ what Id got wrong. I also tried to work out (6)
13、 _ why Id made mistakes. If I didnt understand something,learned from,looking atin detail,discovering,understand,start,Id write it down (7) _ and then bring it up (8) _ in class with my teacher. She was very helpful and she went through (9) _ all of the things that would probably (10) come up _ in t
14、he exam. In the end, the exam wasnt so bad after all and I think I got through (11) _ it. Mind you, I still havent had my results yet!,make a note of,appear,passed,looked atin detail,mention,Look at the following words for about two minutes and then write down as many as you can remember. Try to find out their relationship. (It helps you to remember better.),Challenge,Tell your partner: How can you manage to remember new words?,
