2019-2020学年新素养导学英语课件 讲义 精练 (138)
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In the second part of the experiment，you must boil the water 6. to make (make) sure there is no air in it.You add some oil to the water 7.because this keeps air out of it.It also shows that iron doesn’t rust in water 8. without air in it.9. However ，the nails rust in the tube with ordinary water in the third part of the experiment.That is 10.__h_o_w__ iron reacts with air-free water and with ordinary water.
After reading the text，please fill in the following blanks. Different metals have different uses.When we use metals，it is important 1._t_o_k_n_o_w_
(know) how they react with different substances.The 2. reaction (react) of metals with these substances can 3.be put(put) in order.From the table，we can find that potassium reacts most with oxygen and water 4. while copper doesn’t react with water.When we heat calcium in oxygen，it burns 5. to form (form) an oxide.
making kitchen tools.
√A.aluminium
C.steel
B.iron D.copper
will have less use in
查看答案
Ⅱ.Choose the best answer according to Passage B. 1.The experiment shows us . A.how iron reacts with air B.iron is quite easy to rust C.how to prevent iron from rusting
(F) 3.You must never wear contact lenses in the lab.( F )
查看答案
Period One Introduction & Reading and Vocabulary—Pre-reading
PART 1 读前清障 PART 2 课文理解
PART 1
根据上文判断正(T)误(F) 1.Students can work in the lab by themselves if a teacher isn’t present.
(F) 2.You can drink when thirsty，but you can’t eat when hungry in the lab.
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Step 2 Careful-reading
Ⅰ.Choose the best answer according to Passage A.
1.Which of the following metals reacts the most with water?
A.Copper. C.Aluminium.
5.Check the labels(标签) on chemical bottles twice before removing any of the chemicals.Take only as many chemicals as you need.
6.Most chemicals in the lab are considered to be dangerous.Do not touch， taste，or smell any chemicals unless specifically asked to do so.
单元核心素养：思维品质
Science is a way of thinking much more than it is a body of knowledge. 科学与其说是一套知识体系，不如说是一种思维 方式。
话题导入
Laboratory Safety Rules Science is a hands-on(实际操作的) laboratory class.You will be doing many lab activities which may need the use of chemicals or equipment.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 GUIDELINES(准则) 1.Never work alone.No student may work in the lab without a teacher present. 2.When first entering a lab，do not touch any equipment，chemicals，or other materials in the lab until you are asked to do so.
WHAT TO WEAR 1.Dress properly during a lab activity.Long hair must be tied back and shoes must completely cover the feet. 2.Contact lenses should not be worn in the lab unless you are allowed by your teacher. 3.Any time chemicals，heat，or glassware is used，students will wear lab goggles(护目镜).Nobody should break this rule!
ACCIDENTS AND INJURIES 1.Report any accident or injury to the teacher immediately. 2.If a chemical should get into your eye(s) or onto your skin，go to see a school nurse immediately.
A.结论 B.目标；目的 C.反应 D.电 E.阶段；时期
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[第三组] 11.electrical 12.equipment 13.react 14.partial 15.rust
A.(化学)反应 B.生锈 C.设备；装备 D.部分的；局部的 E.与电有关的；用电的
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[第四组] 16.boil 17.ordinary 18.float 19.form 20.dissolve
√D.how iron reacts with air and with water
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2.“Air-free water” means . A.air with a lot of water B.air without water C.water with a lot of air
√D.water without air
√B.The Reaction of Metals
C.The Reaction of Metals with Oxygen
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2.What should be included in a description of an experiment according to Passage B? (1) Aim (2) Apparatus (3) Method (4) Result (5)_C_o_n_c_l_u_s_io_n__
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Step 4 Sentence-learning
1.Different metals have different uses，for example，steel is used in cars，and iron is used in electrical equipment. [句式分析] 本句的主干为：Different metals have different uses。for example 作插入语，其后的句子对主句的内容进行举例说明，是由并列连词and连接的 两个分句。 [自主翻译] _不__同__的___金__属__有__不__同__的__用__途__，__比__如__，__钢__材__被__用__于__汽__车__中__，__铁__被__用__ _于__电__气__设__备_中__。___
读前清障
匹配左边的单词与右边的汉语意思
[第一组] 1.liquid 2.expand 3.contract 4.substance 5.mixture
A.膨胀 B.混合物 C.液体 D.收缩 E.物质
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[第二组] 6.electricity 7.stage 8.conclusion 9.aim 10.reaction
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3.If some clean iron nails are put in a damp place for a week，the nails will .
√A.rust
B.not rust C.form an oxide D.keep the place dry
查看答案
Step 3 Post-reading
A.溶解；分解；分离 B.形成 C.漂浮 D.煮；煮沸 E.普通的；平常的
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PART 2
课文理解
Step 1 Fast-reading
1.Read Passage A and choose the best title for it. A.The Different Uses of Metals
B.Iron.
√D.Sodium.
2.When heated in oxygen， will react partially.
A.zinc
√B.copper
C.potassium
D.all metals
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3.According to the passage，it can be inferred that
3.Do not eat，drink，or chew gum in the lab.Do not use lab glassware as containers for food or drink.
4.Know the positions and operating procedures( 程 序 ) of all safety equipment，including the first-aid kit and the fire extinguisher(灭火器).Know where the fire alarms and the exits are.
7.At 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 performing all experiments.
In the second part of the experiment，you must boil the water 6. to make (make) sure there is no air in it.You add some oil to the water 7.because this keeps air out of it.It also shows that iron doesn’t rust in water 8. without air in it.9. However ，the nails rust in the tube with ordinary water in the third part of the experiment.That is 10.__h_o_w__ iron reacts with air-free water and with ordinary water.
After reading the text，please fill in the following blanks. Different metals have different uses.When we use metals，it is important 1._t_o_k_n_o_w_
(know) how they react with different substances.The 2. reaction (react) of metals with these substances can 3.be put(put) in order.From the table，we can find that potassium reacts most with oxygen and water 4. while copper doesn’t react with water.When we heat calcium in oxygen，it burns 5. to form (form) an oxide.
making kitchen tools.
√A.aluminium
C.steel
B.iron D.copper
will have less use in
查看答案
Ⅱ.Choose the best answer according to Passage B. 1.The experiment shows us . A.how iron reacts with air B.iron is quite easy to rust C.how to prevent iron from rusting
(F) 3.You must never wear contact lenses in the lab.( F )
查看答案
Period One Introduction & Reading and Vocabulary—Pre-reading
PART 1 读前清障 PART 2 课文理解
PART 1
根据上文判断正(T)误(F) 1.Students can work in the lab by themselves if a teacher isn’t present.
(F) 2.You can drink when thirsty，but you can’t eat when hungry in the lab.
查看答案
Step 2 Careful-reading
Ⅰ.Choose the best answer according to Passage A.
1.Which of the following metals reacts the most with water?
A.Copper. C.Aluminium.
5.Check the labels(标签) on chemical bottles twice before removing any of the chemicals.Take only as many chemicals as you need.
6.Most chemicals in the lab are considered to be dangerous.Do not touch， taste，or smell any chemicals unless specifically asked to do so.
单元核心素养：思维品质
Science is a way of thinking much more than it is a body of knowledge. 科学与其说是一套知识体系，不如说是一种思维 方式。
话题导入
Laboratory Safety Rules Science is a hands-on(实际操作的) laboratory class.You will be doing many lab activities which may need the use of chemicals or equipment.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 GUIDELINES(准则) 1.Never work alone.No student may work in the lab without a teacher present. 2.When first entering a lab，do not touch any equipment，chemicals，or other materials in the lab until you are asked to do so.
WHAT TO WEAR 1.Dress properly during a lab activity.Long hair must be tied back and shoes must completely cover the feet. 2.Contact lenses should not be worn in the lab unless you are allowed by your teacher. 3.Any time chemicals，heat，or glassware is used，students will wear lab goggles(护目镜).Nobody should break this rule!
ACCIDENTS AND INJURIES 1.Report any accident or injury to the teacher immediately. 2.If a chemical should get into your eye(s) or onto your skin，go to see a school nurse immediately.
A.结论 B.目标；目的 C.反应 D.电 E.阶段；时期
查看答案
[第三组] 11.electrical 12.equipment 13.react 14.partial 15.rust
A.(化学)反应 B.生锈 C.设备；装备 D.部分的；局部的 E.与电有关的；用电的
查看答案
[第四组] 16.boil 17.ordinary 18.float 19.form 20.dissolve
√D.how iron reacts with air and with water
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2.“Air-free water” means . A.air with a lot of water B.air without water C.water with a lot of air
√D.water without air
√B.The Reaction of Metals
C.The Reaction of Metals with Oxygen
查看答案
2.What should be included in a description of an experiment according to Passage B? (1) Aim (2) Apparatus (3) Method (4) Result (5)_C_o_n_c_l_u_s_io_n__
查看答案
Step 4 Sentence-learning
1.Different metals have different uses，for example，steel is used in cars，and iron is used in electrical equipment. [句式分析] 本句的主干为：Different metals have different uses。for example 作插入语，其后的句子对主句的内容进行举例说明，是由并列连词and连接的 两个分句。 [自主翻译] _不__同__的___金__属__有__不__同__的__用__途__，__比__如__，__钢__材__被__用__于__汽__车__中__，__铁__被__用__ _于__电__气__设__备_中__。___
读前清障
匹配左边的单词与右边的汉语意思
[第一组] 1.liquid 2.expand 3.contract 4.substance 5.mixture
A.膨胀 B.混合物 C.液体 D.收缩 E.物质
查看答案
[第二组] 6.electricity 7.stage 8.conclusion 9.aim 10.reaction
查看答案
3.If some clean iron nails are put in a damp place for a week，the nails will .
√A.rust
B.not rust C.form an oxide D.keep the place dry
查看答案
Step 3 Post-reading
A.溶解；分解；分离 B.形成 C.漂浮 D.煮；煮沸 E.普通的；平常的
查看答案
PART 2
课文理解
Step 1 Fast-reading
1.Read Passage A and choose the best title for it. A.The Different Uses of Metals
B.Iron.
√D.Sodium.
2.When heated in oxygen， will react partially.
A.zinc
√B.copper
C.potassium
D.all metals
查看答案
3.According to the passage，it can be inferred that
3.Do not eat，drink，or chew gum in the lab.Do not use lab glassware as containers for food or drink.
4.Know the positions and operating procedures( 程 序 ) of all safety equipment，including the first-aid kit and the fire extinguisher(灭火器).Know where the fire alarms and the exits are.
7.At 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 performing all experiments.