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1、【课本习题】人教版 必修四 Unit 4作者：儒风无棣时间：2012年12月28日 00:08Unit4课内练习答案（P27Ex.1）P27Ex.21. The author is male. Ahmed Aziz will not shake hands with women, but he shakes hands with the author. 2. He noticed that the Colombian man kissed the British woman, but in her culture, a kiss from a stranger is not acceptabl
2、e. He also noticed that the Japanese man bowed just as the Canadian man started to shake hands, so one mans nose touched the other mans hand.3. The British woman, Julia, and probably the Canadian man, George, seemed to prefer to keep more physical distance from others. The Colombian man, Tony, and t
3、he Jordanian man, Ahmed, seemed to prefer closer physical distance.4. Yes. Tony from Colombia and Darlene from France had a similar greeting custom-a kiss. George fromCanada and Ahmed from Jordan also had a similar greeting custom-a handshake, but Ahmed shakes hands only with men.5. This saying mean
4、s that when we are in a certain place, we should follow the customs of the people who live in that place, not our own customs.6. (略)P28Ex.1defence likely Italy canteen represent dash approach association cheek flight P28Ex.2approached Jordan cheek curiously dashed misunderstood contrary.P28Ex.3cross
5、roads adult major dormitory greeted representing association spoken Colombia curious flightP29Ex.21approaching 2laughing / smiling 3smiling 4shaking 5shaking 6laughing 7competing 8touchingP31Ex.1Picture 2, Picture1, Picture3, Picture4, Picture6, Picture5（7）二次函数的性质：Workbook练习题答案（P62Ex.2）1F2T3F4T5T2、加
6、强家校联系，共同教育。P62Ex.31. Because they hope an enemy will not hurt them.2. Both humans and chimps stand up, and try to make themselves look bigger and more frightening by waving their arms around or standing over the others.3. Both humans and chimps hold their babies and hug and kiss them to make them fe
7、el safe.4. Bigger chimps make the small ones feel safe by touching them or kissing and hugging them. Yes, humans will do things like this if they want to make their children feel safe.6、增加动手操作的机会，使学生获得正确的图形表象，正确计算一些几何形体的周长、面积和体积。P63Ex.11. is, likely to 2in general 3lost face 4at ease 5turned her bac
8、k to 6defended, againstP63Ex.2comedy yawned truly optimism anger fist subjective facial statements推论1: 同弧或等弧所对的圆周角相等。1、第一单元“加与减(一)”。是学习20以内的退位减法，降低了一年级上学期孩子们学习数学的难度。退位减法是一个难点，学生掌握比较慢，但同时也是今后竖式减法的重点所在。所以在介绍的：数小棒、倒着数数、凑十法、看减法想加法、借助计数器这些方法中，孩子们喜欢用什么方法不统一要求，自己怎么快怎么算，但是要介绍这些方法。P63Ex.31. He died defending
9、 the honor of his nation. 2. Elizabeth did not trust him, so she gave him a false name and address.3. Jenny cant function without a cup of coffee in the morning.4. During World War II, he rose gradually from the rank of major to general.5. Dont forget to bring your cassette recorder tomorrow.6. Ther
10、e must be some misunderstanding. I dont know what you are talking about.六、教学措施：P64Ex.11. The smiling man held the front door open and bowed deeply. 2. The car raced past, almost hitting us as it turned the corner.3. I looked up to see a long line of flying birds.4. Your mother just called, hoping to
11、 talk to you.5. There was a man sitting on the sofa and reading a newspaper.6. Hearing that his wife had been in an accident, Mr. Armstrong hurried to the hospital to see her.7. He stayed in the waiting room for over an hour during the operation, worrying about her.8. The field of flowers, waving in the wind, seemed to go on for miles.(一)情感与态度：二次方程的两个实数根.P64Ex.21getting 2encouraging3spoken, speaking 4whispering 5entering, counting 6wearing 7Being 8Driving 9boring94.234.29加与减（二）4 P49-56P65Ex.21、6、2、4、31、开展一帮一活动，让优秀学生带动后进生，促使他们的转化。