1、Module 5A Lesson in a Lab外研版高中英语第一册Warming up by learning vocabularyWords and Expressionsliquidexpandcontractsubstancemixtureoxygenelectricitystagen.液体vi.膨胀vi.收缩n.物质n.混合物n.氧气n.电n.阶段，时期Words and Expressionsconclusionaimreactionelectricalequipmentpartialoxiderustn.结论n.目标，目的n.反应adj.与电有关的，用电的n.设备，装备adj.
2、部分的，局部的n.氧化物vi.生锈Words and Expressionsboilordinarysteamfloatformdissolvebalanceflamevt.煮，煮沸adj.普通的，平常的n.蒸汽，水气vi.漂浮vi.形成vi.溶解，分解，分离n.天平n.火焰Words and Expressionsfacilitylecturedepartmentastonishedcalciummagnesiumzinccoppern.（常作复数）设备，工具n.演讲n.（大学的）科、系adj.吃惊的，惊愕的n.钙n.镁n.锌n.铜Put these words into three gro
3、ups:air glass iron metal oil oxygen salt steam steel water1.Gas:2.Solid:3.Liquid:Steam air oxygen steamGlass iron metal salt steelOil waterGive the following things their correct names1.Crucible 2.Beaker3.Bunsen burner 4.Tube5.Tongs6.Nail7.Glass rod坩埚烧杯酒精灯试管小钳子钉子玻璃棒Fast reading:Read Passage A and ch
4、oose the best title for it.A.The Different Uses of MetalsB.The Reaction of MetalsC.The Reaction of Metals with OxygenCareful reading It is hard to think of a world without metals.Different metals have different uses,for example,steel is used in cars,and iron is used in electrical equipment.A repeat
5、version to the textWhen we use metals,it is important to know how they react with different substances,for example,water and oxygen.The reaction of metals with these substances can be put in order.Here is a table with the metals that react most at the top,and metals that react least at the bottom.Re
6、ad the following numbers out 2,000,000 (two million)5,100,000 (five million,one hundred thousand)12,269,000 (twelve million,two hundred and thirty-nine thousandPractice:52,470,383 100,000,000365,528,462 1,000,000,000Read these fractions:1/4(a quarter)1/3 (a third)4/5(four-fifths)1/10 (one tenth)3/4(
7、three quarters)1/2(a half)2/3(two-thirds)5/8 (five-eighths)9/10 (nine-tenths)Practice:Read the following out:1.1/2 of 6,000,000 2.35,246,000 plus 12,800,0003.25%of 200,000,000(three million)(forty eight million,sixty thousand)(fifty million)4.260,408,396 plus 5,284,7005.10%of 800,000,000(two hundred
8、 and sixty five million,six hundred and ninety-three thousand,ninety-six)(eighty million)Read out the decimals below:0.5 (point five)2.5 (two point five)18.27 (eighteen point two seven)Practice:2 1/2 =2.5 (two point five)2 1/4=2.25(two point two five)3/4=0.75(point seven five)12 3/10=12.3(twelve point three)1.Conduct an experiment about something you see in your daily life.2.Try to repeat the text freely yourself.3.Learn the new words again,using the dictionary if necessary.
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