八下,复习资料.doc11.doc
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1、ss 2, Grade 1? _.A. KangkangB. JackC. Jane( A ) 28. What does the letter talk about? It talks about _.A. foodB. vegetablesC. hamburgers ( B ) 29. The students in Class 2, Grade 1 want to go to _ this Saturday.A. cook dishesB. have a picnicC. buy some food ( C ) 30. Maria wants to take _ to West Hill
2、 Farm.A. camera, kite and applesB. bowls and guitar C. kite, chicken and knifeBIn the U.S.A. or Canada, on Sundays many people go out for a picnic. They often ask their good friends to go with them. They bring many things with them, like glasses, kites, knives, some nice food and some nice drink. So
3、metimes(有时), they take their pets with them. If(如果) it is very fine, they may have their food in a park(公园), in a countryside(乡村), or at the foot of(在脚下) a hill. Thats great fun.根据短文的内容,判断正(T)误(F)。100( F ) 31. People in the U.S.A. dont like to go out for a picnic on Sundays.( T ) 32. They often go f
4、or a picnic with their good friends.( F ) 33. They dont like to bring pets with them.(F ) 34. In Canada, only kids have picnics.( F ) 35. People cant eat in a park in Canada.COne day, Susan goes shopping with her mother. When they get to(到达) the supermarket(超市), Susan is very happy. There are many t
5、hings and many people in it.Susans mother tells her to follow(跟随) her. They walk(步行) here and there, and they buy some things.When they come to a shelf(货架), Susan sees some boxes of chocolates. Her mother wants to buy her a box of brown chocolates. Susan shakes(摇)her head and says,“I want a box of w
6、hite chocolates.”“Why?”asks her mother.“I cant bite my fingers(咬着手指) when I eat them at night(在晚上),”answers Susan quickly(快地,迅速地).根据短文内容,回答下列问题。36. Where does Susan go one day?_37. Do they buy any things?_38. What does Susan want?_39. Why does Susan want white chocolates?_40. Does Susan eat chocolat
7、es at night?_.词汇。(10分)(A)根据句意及括号内所给英文或汉语提示,完成句子。41. What about (fly) kites this afternoon, Kangkang? Good idea.42. He often goes (swim) with his classmates on Sunday.43. Im (恐怕) I cant come with you.44. Dont forget to bring your (吉他). All right.45. Lets have a (野餐) on the farm. Its very fun. (B)根据句意
8、及首字母提示,补全单词。46. Im afraid I have no time. Im not f .47. Dont f to tell Tom the news.48. S is the first day of a week.49. The box is too heavy .Can you help me c it? Of course.50. I can sing an English s .VI.书面表达。(15分)假如你认识一位叫Cynthia 的笔友,根据她的信息资料,向同学们做一简要介绍, 60-80词。NameCynthiaAge13SchoolXiangyang Mid
9、dle SchoolPlanon Sunday morning go shoppingon Sunday afternoon go swimmingon Sunday evening cook a big dinner Appearance(相貌)big blue eyes, long blond hair, round face, small noseYou may begin like this: Hello, everyone, today Ill introduce Cynthia to you. She is my pen pal. She _ Unit 4 Topic 2. 1-5
10、BBADC 6-10CCBCB. 11-15FCEBG.16-20ABBCC21-25BBBCB. 26-30ABABC 31-35FTFFF 36. She goes to the supermarket. 37. Yes, they do. 38. She wants some课题3 使用燃料对环境的影响(A)(课堂实录)【教学目标】 1、了解化石燃料燃烧对环境的影响。认识使用和开发清洁燃料的重要性。2、了解煤和石油产品燃烧对环境造成的影响。增强学生保护环境的意识。【教学重点】了解煤和石油产品燃烧对环境造成的影响。增强学生保护环境的意识。【实验准备】药品:二氧化硫气体,蒸馏水,石蕊试液,镁
11、条,大理石,汽油,酒精,树叶 仪器:塑料瓶,集气瓶【课时安排】一课时【教学过程】课件画面1: 展示一幅优美的自然风景图画,并配上一曲 优美的音乐【点评】优美的自然环境,悠扬的乐曲使人耳目一新!让学生产生一种自然环境不容破坏的美好情怀。教师:人类一直生活在空气清新,风景如画的美好世界里。可是工业革命以后,人类突然发现,在我们生活的世界里,天不再是那么湛蓝,水不再绿,空气不再清新,鸟儿也不再欢叫。请同学们思考,造成这种现象的原因是什么?【点评】“工业革命”这一关键词使用非常恰当,很自然地使学生将自然环境受到的影响与煤和石油大量使用联系在一起。学生1:工业革命是以蒸汽机的发明和使用为特征,而蒸汽机使
12、用的燃料是煤,煤的燃烧会污染空气。学生2:工厂所产生的废气直接排放到空气中,造成空气污染。学生3:汽车尾气的排放也会影响空气的质量。学生4:工厂的废水和生活废水的任意排放会使水污染加剧。教师:对!煤和石油产品的燃烧会污染空气,今天我们就探究燃料的使用对环境造成的影响。【点评】教师正确的引导能使学生抓住问题的实质。 新课引入自然!探究项目1: 煤的燃烧对空气的影响教师:建议大家从以下几个问题入手:1:煤的成分是什么?2 :书写煤燃烧的化学方程式,煤燃烧的产物是什么?3煤的燃烧对环境的影响【点评】问题设置循序渐进,探究课题由浅入深;新旧知识联系密切,使学生能用已学知识探究新的问题!探究小组1:煤是
13、复杂的化合物,主要含有碳元素,还含有少量氮,硫等元素。探究小组2:煤的大量燃烧会生成大量的二氧化碳和大量的二氧化硫以及二氧化氮。探究小组1:煤的燃烧会产生大量的粉尘。它们漂浮在空气中会对人类的健康造成极大的危害。教师:那么煤的大量燃烧会对自然界造成什么影响呢?探究小组1:粉尘漂浮在空气中会对人类的健康造成极大的危害。探究小组3:二氧化碳是一种温室气体,二氧化碳的大量排放会使全球的气温上升。二氧化硫和二氧化氮的排放对空气质量的影响,我们小组还没有结论。教师演示:将一支装有二氧化硫的塑料瓶中加入少量水,然后迅速盖上瓶盖,请同学们观察现象并分析原因。学生1:塑料瓶变瘪了。学生2:塑料瓶变瘪是因为二氧
14、化硫溶解在水里了。学生3:二氧化硫溶解到水里后,也许与水发生了反应。教师演示:打开塑料瓶的瓶盖,向其中滴入一滴石蕊试剂 ,观察现象并分析原因。学生4:溶液变红了,说明二氧化硫溶解到水里后,生成了一种酸性物质。【点评】针对学生的困惑,教师对二氧化硫与水反应实验的补充很恰当,使学生对酸雨的形成有很感性的认识;难点得以突破。学生实验:向充满二氧化硫的集气瓶中加少量水,分别将植物叶子,镁条,大理石放入上述液体中,观察现象,并分析如果天上下的雨与这种溶液的酸性一样,会对自然界造成什么影响。【点评】问题设置较为深入,注重了实验结果向生活实际的迁移。 探究小组1:我们观察到,镁条会很快溶解到这种酸性溶液中。
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