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1、1ModuleModule 5 5 A A LessonLesson inin a a LabLab实验是进行科学研究最重要的环节，做实验时，我们一定要遵守实验室的规章制度，要注意安全，要熟悉每种仪器的用途和使用方法。做实验固然十分好玩，但是千万不能不注意安全哦！LaboratoryLaboratory safetysafety rulesrulesScience is a handson laboratory class.You will be doing many lab activities which may need the use of chemicals or equipment
2、.To make sure of a safe science classroom，we provide you with a list of rules.These rules must be followed at all times. GENERAL GUIDELINESGUIDELINES1Never work alone.No student may work in the lab without a teacher present.2When first entering a lab，do not touch any equipment，chemicals，or other mat
3、erials in the lab until you are asked to do so.3Do not eat，drink，or chew gum in the lab.Do not use lab glassware as containers for food or drink.4Know the positions and operating proceduresprocedures of all safety equipment，including the firstaidfirstaid kitkit and the firefire extinguisher.extingui
4、sher.Know where the fire alarms and the exits are.5Check the labelslabels on chemical bottles twice before removing any of the chemicals.Take only as many chemicals as you need.6Most chemicals in the lab are considered to be dangerous.Do not touch，taste，or smell any chemicals unless specifically ask
5、ed to do so.7At the end of your experiment，clean everything carefully and return your equipment to where you got it.Wash your hands with soap and water after 2performing all experiments.WHAT TO WEAR1Dress properly during a lab activity.Long hair must be tied back and shoes must completely cover the
6、feet.2Contact lenses should not be worn in the lab unless you are allowed by your teacher.3Any time chemicals，heat，or glassware is used，students will wear lab gogglesgoggles.Nobody should break this rule!ACCIDENTS AND INJURIES1Report any accident or injury to the teacher immediately.2If a chemical s
7、hould get into your eye(s)or onto your skin，go to see a school nurse immediately. 1handson adj. 实际操作的2guideline n. 准则3procedure n. 程序4firstaid kit 急救包5fire extinguisher 灭火器6label n. 标签7goggles n. 护目镜1What should you do at the end of an experiment in the laboratory?_【答案】 Clean everything carefully an
8、d return the equipment to where it was.Wash hands with soap and water.2If a chemical should get into your eye(s)，what would you do?_【答案】 Report it to the teacher and go to see a school nurse immediately.SectionSection IntroductionIntroduction & & VocabularyVocabulary andand SpeakingSpeakingPreparing
9、Preparing3根据提示写出下列单词1expand vi. 膨胀2contract vi. 收缩3substance n. 物质4mixture n. 混合物5electricity n. 电6stage n. 阶段；时期7conclusion n. 结论8aim n. 目标；目的9reaction n. 反应10electrical adj. 与电有关的；用电的11equipment n. 设备；装备12react vi. (化学)反应13partial adj. 部分的；局部的14boil vt. 煮；煮沸15ordinary adj. 普通的；平常的看单词 学构词动词ment名词，m
10、ent 表示“行为，状态，过程，手段及其结果” 。常见的有：achievementachievement n.功绩；成就；announcement announcement n.通知；通告；punishmentpunishment n.惩罚；statementstatement n.陈述；声明；treatment treatment n.对待；治疗等。根据提示补全下列短语1add.to. 往加入2react with 与起(化学)反应43in_conclusion 最后；总之4put.in order 把按顺序排列5keep.out of 把关在外面6think of 想；考虑7find ou
11、t 弄清楚；查明根据提示补全下列教材原句1Twothirds_of the earths surface is water.地球表面的三分之二是水。2It_is_hard_to_think_of a world without metals.很难想象一个没有金属的世界。阅读 P4445教材课文，选择最佳答案PassagePassage A A1The first sentence “It is hard to think of a world without metals.” will make us think _.Ametals make up the worldBmetals play
12、a greatly important role in the worldCthere would be no world if there were no metalsDit is difficult for us to live in the world of metals2The table in the passage is arranged in order of _.Ametal kindsBreaction activitiesCvalues of metalDthe first letters of the words3According to the table，which
13、metal is most suitable to make our daily kitchenware(厨房)?AZinc. BIron.CCopper. DMagnesium.5PassagePassage B B4Which is NOT the apparatus that is required in the experiment of “Iron in dry air”？ACotton wool. BOil.CIron nails. DTest tube holder.5Which is required as one of the apparatus in the experim
14、ent of “Iron in ordinary water”？AOil. BCotton.CBunsen burner. DTest tube holder.6The purpose of these two experiments is_.Ato find out how iron reacts with water and airBto find out how important iron isCto find out how to do the experiment of irons reaction with water and airDto find out how to kee
15、p iron rustless【答案】 16 BBCBDD阅读 P4445课文，在空白处填入适当的内容(1 个单词)或括号内单词的正确形式Metals are very important in 1.the world.Different metals have different 2.uses(use)For example，steel 3.is_used(use)in cars，and iron in 4.electrical(electricity)equipment.When we use metals，it is important 5.to_know(know)they react 6.with different substances，for example，water and oxygen.The 7.reaction(react)of metals with these substances can 8.be_put(put)in order.Potassium，sodium，calcium，magnesium，
