1、Module 5 A Lesson in a LabIntroduction&Reading and Vocabulary核心脉图目标导引基础认知自主学习.用本模块恰当的词语补全语境1.a clear yellow _ 一种透明淡黄色的液体2.Metals _with heat.金属遇热膨胀。3.Earthworms can _.蚯蚓能收缩。4.a _of iron and other _ 铁和其他物质的混合物5.a few experiments on _几个电学实验6.the _of a scientific experiment 科学实验的阶段e to a _ 得到结论8.achieve
2、 the _达到目标liquidexpandcontractmixturesubstanceselectricitystagesconclusionaim9.the _ of metals with _ 金属和氧气的反应10._电气设备11._ with different substances和不同物质反应12._ reaction 部分反应13._ the water把水煮沸14._ water普通水15._ an oxide形成一种氧化物reactionoxygenelectrical equipmentreactpartialboilordinaryform.根据语境写出黑体部分的汉语
3、意思1.Add some oil to the water.()2.This will keep air out of the water.()3.The reaction of metals with these substances can be put in order.()4.Think of yourself as working for yourself,not for the company.()5.The ship sank and many treasures on it were buried at the bottom of the sea.()把加入使不进入按顺序排列想
4、象在底部.根据课文及汉语提示补全句子1.The earth is _(四十九倍大)the moon.2.Different metals _(有不同的用途),for example,steel _(用于)cars.3._(这里是一个表格)with the metals that react most at the top,and the metals that react least at the bottom.forty-nine times as large ashave different usesis usedinHere is a table1.名词后缀-ment,例如:equip+
5、-ment equipment设备;装备develop_发展 employ_就业establish_建设agree_协议2.“at the+名词+of”构成的短语,常在句中作状语。例如:at the bottom of在底部at the _ of 在岁时 at the _ of 在开始时at the _ of 以为代价 at the _ of 一看到就developmentemploymentestablishmentagreementagebeginningcostsight语篇精读合作探究 Task 1 框架宏观建构:整体理解 Task 2 文本微观剖析:细节探究1.根据文章细节信息完成下
6、列问题。(1)The first sentence“It is hard to think of a world without metals.”will make us think _.A.metals make up the worldB.metals play a greatly important role in the world C.there would be no world if there were no metalsD.it is difficult for us to live in the world of metals(2)Which of the followin
7、g metals reacts the most with water?A.Copper.B.Iron.C.Aluminium.D.Sodium.(3)How to prevent air from water?A.Boil the water for a long time.B.Make the tube full of water.C.Pour the water into the glass and cover it.D.Put some oil into the water.答案:(1)(3)BDD2.根据文章内容完成空格。The Reaction of MetalsThe impor
8、tance of metals and the reaction of metals with water and oxygenMetals are very important in the world and have different uses,for example,iron is used in electrical(1)_.They(2)_ with different(3)_.The(4)_of metals with water and oxygen can be put in(5)_.Among common metals,potassium is at the(6)_ b
9、ecause it reacts most and copper is at the(7)_ because it reacts least.equipmentreactsubstancesreactionordertopbottomThe Reaction of MetalsA simple scientific experiment that shows how iron reacts with air and with waterThe(8)_ of the experiment is to find out if iron(9)_in dry air,in air-free water
10、 and in(10)_ water.The conclusion of the experiment is that iron doesnt rust in dry air and air-free water,but rusts in ordinary water.aimrustsordinary3.运用语句知识解构课文中的长难句。(1)译文:_,要了解金属和不同的物质,例如与水和氧气如何发生反应,这一点很重要。当我们使用金属时(2)译文:_,反应最强的金属在顶部,反应最弱的金属在底部。这里是一个表格 Task 3 阅读思维升华:主题实践1.结合课文主题,回答下列问题。(1)Do you
11、think metals are important in the world?Why?_Yes,I think so.Because metals have many important uses in our daily life.Forexample,steel is used in cars and iron is used in electrical equipment.Sodiumexists in salt we need every day and our body needs calcium,iron and othermetals.(2)In your daily life
12、,to make iron nails not rust,what can you do?_I can put them in dry air or air-free water and make them avoid touchingordinary water.Besides,I even put some oil on their surface to keep the air or water awayfrom them.2.根据提示,运用本模块词汇与句型完成短文。(1)为了了解一些金属和水及氧气的反应(react with),我研究了一个表格,表格中这些反应(reaction)按强弱
13、顺序排列(put.in order),发现钾排在顶部(at the top),而铜排在底部(at the bottom)。(2)我还从一个科学实验中得出结论:铁在干燥的空气和没有空气的水中不生锈(rust),但在普通的(ordinary)水中生锈。_In order to learn about how some metals react with water and oxygen,I havestudied a table in which the metals are put in order according to the degree ofreaction and found tha
14、t potassium is at the top and copper is at the bottom.I also draw a conclusion from a scientific experiment that iron does not rust in dryair or air-free water,but rusts in ordinary water.要点精研理解应用1.aim n.目的;目标*Now we have to take aim at the problem and try to get it solved.现在我们不得不正视这个难题并努力解决它。*The p
15、rogramme aims to provide free treatment for old people suffering from eye disease.该计划旨在为患眼病的老年人提供免费治疗。*This dictionary aims at explaining the most common mistakes in word use.这本词典旨在说明用词上最常见的错误。【词块积累】【巧学助记】“瞄准”目标【即学活用】(1)语法填空The hunter took aim _ the rabbit and fired.In the newspaper of our school th
16、ere is a column called“Foreign Cultures”,aiming _(introduce)foreign customs and the life of high school students.A bill _(aim)at controlling house prices was passed at the meeting.atto introduceaimed(2)单句改错The visit was aimed for expanding relations between the two countries.()We aim to finishing th
17、e work by Friday.()for改为atfinishing改为finish或to改为at2.equipment n.设备;装备*How about a gift that will add to her collection,or a piece of equipment to help with her hobby?送一件礼物来增加她的收藏,或者买一件设备来帮助她培养兴趣,怎么样?*The new factory was equipped with the latest machinery.那家新工厂安装了最新的机器设备。【名师点津】equipment为不可数名词,不和不定冠词连
18、用,也无复数形式,通常借助于量词来表示数量关系,如a set of equipment一套设备;a piece of/an article of equipment一件设备。【链高考明考向】(2021天津高考)We provide full furnishings,like donated kitchen equipment and furniture items.我们提供全套家具,比如捐赠的厨房设备和家具。【即学活用】(1)语法填空A computer is the most important piece of _(equip)you will buy.The kids equip the
19、mselves _ helmets and knee pads before learning to ride a bike.(2)单句改错You must carry the necessary equipments with you when going out.()equipmentwithequipments改为equipment3.react vi.(化学)反应*Many chemical substances react with oxygen.许多化学物质与氧发生反应。*(2019浙江高考)They were not sure how the Americans would re
20、act to the new type of music.他们不确定美国人对这种新型音乐会有什么反应。*He reacted angrily to the suggestion that he had lied.有人暗示他说谎,他非常生气。*Most peoples reaction to that question is that we are probably not helping enough.许多人对那个问题的反应是我们可能帮得不够。【即学活用】(1)介词填空The water was reacting _ the iron in the tank.Children prefer t
21、o react _ their parents by going against their wishes.He couldnt even begin to think how she would react _ his secret.(2)Gases buried deep in the Earth can also escape to the surface,where they _ _(与发生反应)oxygen.withagainsttoreactwith4.put.in order 把按顺序排列*All goods should be put in order on the shelv
22、es before the supermarket opens.超市开门前,所有的货物都必须整齐地排列在货架上。*He keeps playing with the radio;he is sure to put it out of order.他老是摆弄收音机,一定会把它弄坏的。*Some teachers find it difficult to keep their classes in order.有些教师觉得课堂秩序很难维持。*Write down the qualities youd like to have in order of priority.按照优先次序写下你想具有的品质
23、。【即学活用】(1)My boss prefers to have his affairs _(井然有序)before he leaves on vacation.(2)Things have to _(按顺序整理好)before our mother comes back home.(3)I couldnt get through to him because his telephone was _now and then.我打不通他的电话,因为他的电话时不时出故障。in orderbe put in orderout of order5.add.to.往加入*Make sure you a
24、dd milk to the mixture to make it delicious.确保在混合物中加入牛奶,使它美味可口。*I dont want to add to your trouble.我不想给你增加麻烦。*Dont ask me to add up the bill;maths isnt my strong point.别叫我算账单,我的数学可不怎么样。*The cost of two trips added up to 1,000 dollars.两次旅行的费用总计达1 000美元。【巧学助记】看图记add【链高考明考向】*(2021天津高考)She added that sh
25、e had a line of staff at her door wanting to take the training.她补充说,有一队员工在她门口等着接受培训。*(2021天津高考)Knowing a little about a lot of things that interest you can add tothe richness of a whole,well-lived life.了解一些你感兴趣的事情,使你整个生活丰富多彩。【小词汇大文化】The flame runs high when everyone adds wood to the fire.众人拾柴火焰高。(启示
26、我们团结就是力量)【即学活用】(1)语法填空(2020新高考全国卷)After that,not only did he sell popcorn,but he also added cream and salt _ the popcorn to make it taste better.At the exits polite assistants will take the goods and add _ the cost.I should add _ I am not happy about this decision.(2)单句改错As is known to all,good frie
27、nds add happiness and value into life.()toupthatinto改为to6.Two-thirds of the earths surface is water.地球表面的三分之二是水。【句式解构】(1)本句为简单句,主语为Two-thirds of the earths surface,谓语用单数形式。(2)“分数或百分数+of+名词”作主语时,谓语与of后的名词保持数的一致:名词为单数或不可数名词时,谓语用单数;名词为复数名词时,谓语用复数。*Two-thirds of the continent was covered by ice before t
28、he last Ice Age.该大陆的三分之二在上个冰河时代之前被冰覆盖。*Three-fourths of the teachers in this school are women teachers.这个学校的四分之三的教师是女教师。*(2020全国卷)Its been reported that 76 percent of employees in some western countries are using emojis at work.据报道,在一些西方国家,76%的员工在工作中使用表情符号。【名师点津】分数的表达 分子基数词,分母序数词,分子大于“1”,分母加“-s”。若是“
29、”和“”,可分别用a half和a quarter表达。1214【即学活用】(1)语法填空About 60 percent of the workers in this company _(be)young people.One-fifth of the water _(come)from the underground.(2)单句改错One-third of the books is worth reading.()arecomesisare7.It is hard to think of a world without metals.很难想象一个没有金属的世界。【句式解构】(1)本句句式为
30、:It is+adj.+to do sth.。句式中it为形式主语,动词不定式短语to do sth.为真正的主语。*It is easy to be wise after the event.事后诸葛亮人人会做。(2)句式的变式为:It is+adj.+for sb.+to do sth.It is+adj.+of sb.+to do sth.*(2020全国卷)He says its not easy to convince people that nutria fur is green,but he has no doubt about it.他说,说服人们海狸鼠皮毛是环保的不容易,但是
31、他坚信人们会相信的。*It was polite of him to give his seat to an old man on the bus.他很有礼貌,在公共汽车上把座位让给一位老年人。【名师点津】介词不同意不同(1)It is+adj.+for sb.+to do sth.此结构中的形容词常见的有:easy,important,difficult,hard,possible,impossible,necessary等。(2)It is+adj.+of sb.+to do sth.在句中作表语的形容词是对sb.及其行为的评价,这类形容词有:kind,nice,good,honest,c
32、areful,careless,clever,wise,stupid,foolish,rude,polite,impolite等。【小词汇大文化】It is hard to please all.众口难调。(形容做事很难让所有的人都满意。启示我们应该坚持做自己,不要为了取悦他人而迷失自我。)【知识延伸】用it作形式主语的常见句式归纳:It is+adj./n.+to do sth./that-clauseIt seems/feels+adj.+to do sth./that-clauseIt is no use/good doing sth.It is+done+that-clause【即学活
33、用】语法填空(1)Its so nice _(hear)from her again.(2)It was difficult _ Cathy to accept that she wasnt a winner.(3)It was considerate _ Michael to inform us of his delay in case we got worried.(4)It is difficult for you _(solve)the problem.to hearforofto solve【要点拾遗】1.expand vi.膨胀*Why not try to expand your
34、 story into a novel?你为什么不试图把你的故事扩展成小说呢?*He asked his teacher to expand on the steps of programming.他让老师详述编制程序的步骤。*(2021天津高考)These expansions into new worlds help us by giving us new perspectives.这些对新世界的扩展通过给我们新的视角来帮助我们。【名师点津】expand指在尺寸、数量或重要性上变大,强调“膨胀”,也可指花瓣等的张开。【巧学助记】看图记expand【知识延伸】不同的扩展(1)extend指空
35、间、土地、时间等的伸长,延长;也指(梯子等)伸长或舒展(肢体)。*Can you extend your visit a few days longer?你能多停留几天吗?*The bird extended its wings in flight.那只鸟展翅飞翔。(2)spread指张开(双臂、翅膀),或铺开(桌布、地图),也指疾病、消息、恐惧、水等的蔓延,面积上的扩展。*The bird spread(out)its wings.那只鸟张开了翅膀。*Fear spread quickly through the village.恐惧很快在全村蔓延开了。(3)stretch指将某物拉长、撑大
36、,伸长或伸出(一肢或身体某部),也指面积或时间的伸展。*He stretched out his arm to take the book.他伸出手臂去拿书。*The road stretched(out)across the desert into the distance.这条道路穿过沙漠伸向远方。【即学活用】语法填空(1)The director plans to expand the firm _ an international company.(2)I am quite satisfied with your explanation,so theres no need to exp
37、and _ it.(3)Heat causes the _(expand)of gases.intoonexpansion2.contract vi.收缩*The liquid expands and contracts with changes in temperature.液体随着温度的变化而膨胀和收缩。*The economy has contracted by 2.5%since last year.自去年起经济已经萎缩了2.5%。*Researchers think olive oil may slow stomach contractions.研究人员认为橄榄油可能减缓胃收缩。co
38、ntract及其派生词的用法【熟词生义】Once you have reached formal agreement,you should enter into a contract with the other party.一旦达成正式协议,你就应该和对方签订合同。()n.合同;契约【即学活用】(1)语法填空The _(contract)of the muscle is a reaction of the body.They have contracted _(build)a railway across Africa.(2)_as it cools.玻璃遇冷收缩。contractionto
39、 buildGlass contracts3.mixture n.混合物*Steel is a mixture of iron and other substances.钢是铁和其他物质的混合物。*You can mix this paint with water or oil.你可以用水或油调和这种绘画颜料。*People often mix him up with other actors.人们经常把他和其他演员弄混。*I came home from the meeting with mixed feelings.我带着复杂的心情从会场回到家。(2018北京高考)Wax is a com
40、plex mixture,but the basic bond in polyethylene,the carbon-carbon bond,is there as well.蜡是一种复杂的混合物,但是聚乙烯中的基本键,碳碳键,也存在。【即学活用】(1)语法填空This drink is a _(mix)of three different fruits.Mix the flour _ the eggs and water.Its common to mix him up _ his brother;theyre twin brothers.Alice left the job with _(
41、mix)emotions.(2)(2018全国)This creation attracted a lot of attention thanks to _modern and traditional Chinese elements.这一创作由于融合了现代和传统的中国元素而受到广泛关注。mixturewithwithmixedits mixture of4.stage n.阶段;时期*Hamlet is on stage for most of the act.这一幕的大部分时间哈姆雷特都出场。*Their youngest child is at the stage where she c
42、an say individual words but not full sentences.他们最小的孩子目前所处的阶段是会说单个的词,但还不会说整句话。*The company wants to compete on the world stage.这家公司想在世界舞台上竞争。stage的用法【名师点津】stage与介词当stage表示“阶段,时期”时,常与介词at或in搭配;表示“舞台”时,常与on连用。【链高考明考向】(2020天津高考)A spotlight lights up only one section of a stage.聚光灯只照亮舞台的一部分。【即学活用】(1)语法填
43、空The project is still _ a planning stage.If you stand _ stage and share your view of the world,people will connect with you.(2)Piaget concluded that there were _in the development of children.皮亚杰推断儿童发展有四个不同的阶段。at/inonfour different stages5.conclusion n.结论*I soon arrived at/came to/drew/reached the c
44、onclusion that she spent more money on November 11th this year.我不久就得出结论,她今年双十一花了更多钱。*In conclusion,I would like to say how much I have enjoyed myself today.最后,我想说我今天过得很开心。*The performance will conclude with a light and sound show about Hanfu.表演将以一场关于汉服的光影秀结束。【名师点津】conclusion后可接that引导的同位语从句,进一步解释说明其内
45、容。【链高考明考向】(2020天津高考)This led Jones to the conclusion that there are too many extremely lonely people in his community,who are easy targets of cheating.这让琼斯得出结论,在社区里有太多极度孤独的人,他们很容易成为被骗的目标。【即学活用】(1)Doctors failed to reach a _(conclude)on the exact cause of the death.(2)_ conclusion,the Belt and Road p
46、rogram is moving forward,which is a fact that no one can change.(3)I drew a conclusion from my own experience _ nothing is more valuable than health.(4)The author concludes her lecture _ a brief summary.conclusionInthatwith6.think of 想出;想起;考虑*Hannah started to think of how she could help them.汉娜开始考虑
47、她如何能帮助他们。*We think highly of their research in the field.我们对他们在这个领域的研究评价很高。*Because of these documentaries about China,some foreigners have begun to think of coming to China.因为这些关于中国的纪录片,一些外国人开始考虑来中国。【词块积累】think highly/poorly of.对评价高/差think nothing of.不把当回事think of.as.把看作What do you think of.?你认为怎么样
48、?【即学活用】(1)语法填空(2020天津高考)I think _ one friend who couldnt arrange flowers to satisfy herself.We all think of her _ a responsible teacher.(2)Who can _to raise money?谁能想出个集资的办法?(3)_women who wear high heel shoes?你觉得穿高跟鞋的女士怎么样?ofasthink of a wayWhat do you think of(4)The boss seems _.老板似乎很器重你。to think h
49、ighly of you7.find out 弄清楚;查明白*Women arent finding out about the costs until the bills come in.女人直到收到账单才会知道开销。*I couldnt make out what he was saying.我不明白他说的话。*I believe that you can work out this problem by yourself.我相信你自己能算出这道题。【链高考明考向】(2020江苏高考)To find out,British scientists conducted a study.为了找到
50、答案,英国科学家进行了一项研究。【即学活用】语法填空(1)Can you find _ when the meeting starts?(2)We can find a way to work _ this problem.(3)The firemen worked hard but were not able to put _ the fire.outoutout8.keep.out of.防止进入;使留在外面*This will keep air out of the water.这会使空气不进入水中。*I hope youll keep out of trouble while Im a
51、way.我不在家时,希望你不要惹事。*The plastic house will keep the cold air out to protect the vegetables.塑料大棚会把寒气挡在外面以保护蔬菜。*As long as you can keep away from them,youll be safe.只要远离他们,你就会安全。*Please keep off the grass.请勿践踏草坪。【即学活用】语法填空(1)The doctor kept everyone out _ the room when he was working.(2)Before you go t
52、o bed youd better close the doors and windows to keep thieves _.(3)(2020天津高考)The“HAPPY TO CHAT”benches help break down the invisible social barrier that keeps people _ saying hello.(4)The fire is dangerous so you should keep the child _ it.ofoutfromoff9.ordinary adj.普通的;平常的*Ordinary people tend to w
53、atch TV for relaxation at ordinary times.普通人平时喜欢看电视放松自己。*(2019天津高考)But doing any ordinary job as well as one can is in itself an admirable commitment.但是,尽可能做好任何普通的工作本身就是一种令人钦佩的承诺。*She is ordinarily very busy in the morning.她早上通常很忙。*Snowstorms are common during winter.暴风雪在冬天里很常见。*Shes smiling her usu
54、al friendly smile.她脸上挂着她一贯友好的微笑。*There is nothing to worry about.This is a perfectly normal baby.不用担心。这是一个完全正常的孩子。【词块积累】ordinarily adv.通常地;一般地【名师点津】ordinary意为“普通的;平常的”,指与一般事物的性质标准相同,强调“平常”而无奇特之处common意为“常见的;普遍的”,用于指物,侧重很常见,不稀奇。强调许多事物具有某种共同点而“不足为奇”。common sense常识usual意为“通常的;惯常的”,是按照某类人或某个人的常规情况判断,有“遵
55、循常规”的意味。as usual像往常一样normal意为“正常的”,形容人或物“符合常态或常规”【即学活用】(1)选词填空(ordinary,common,usual,normal)A _ heart beats around seventy-six times a minute.Windmills(风车)are a _ sight in Holland.As _,there werent many people at the meeting.Now electrical equipment has entered _ families.(2)单句改错(2019全国卷)What I want
56、 is not just an ordinarily cafe but a very special one.()normalcommonusualordinaryordinarily ordinary10.Below is a description of a simple scientific experiment.下面是对一个简单的科学实验的描述。【句式解构】(1)本句是个倒装句。主语为a description of a simple scientific experiment,is为系动词,副词below为表语。(2)“某些副词+不及物动词+主语”句式,使用全部倒装。常用的副词有:h
57、ere,there,now,then,out,in,down,up,away等。*(2020全国 卷)Heres a handful of ways that will set you in the right direction.这里有一些方法可以帮你找到正确的方向。*Here comes the summer.夏天到了。*There remains a more difficult task for us.这有一项更艰苦的工作需要我们做。*The door opened and out rushed the children.门开了,孩子们冲了出来。【名师点津】“某些副词+不及物动词+主语
58、”句式中,当主语为代词时,不倒装。*Here you are.给你。【知识延伸】其他使用全部倒装的情况(1)表示方位的短语放在句首,后面一般使用全部倒装。*By the window sat a young man with a magazine in his hand.窗边坐着一个年轻人,手里拿着一本杂志。(2)当句首状语为表示地点的介词词组时,常用全部倒装。*From the valley came a frightening sound.山谷里传来了吓人的声响。*On the top of the hill stands a temple.山顶上有座寺庙。【即学活用】用全部倒装完成句子(
59、1)The door opened and _.门开了,史密斯先生进来了。(2)_最后一班火车开走了。(3)语法填空Here _(be)a telegram for you.Now _(come)your turn.in came Mr SmithThere goes the last train.iscomes【览时事晓天下】1.These conclusions add to mounting evidence that they may not so much have been lone predators,but hunted in packs like wolves.这些结论再次证
60、实霸王龙可能并非离群索居的食肉动物,而是像狼一样成群结队地捕食。2.Known as InnoMake,the smart shoe aims to become an alternative to the decades-old walking stick.这款名为InnoMake的智能鞋旨在成为数十年历史的手杖的替代品。3.Certain animals could be useful for identifying COVID-19 in places or countries in which high-tech laboratory equipment is scarce or in
61、accessible.在高科技实验室设备稀缺或无从获取的地区或国家,可以用某些动物来识别新冠肺炎。学情诊断课堂测评.语段填空1._ with the advanced _,the cinema gives people more wonderful experience.(equip)2.In my opinion,each of us should have an _(目标)of our own.But some of us lead an _(无目标的)life every day.(aim)3.Jack said he could _ from Janes expression that
62、 Jane had stolen his money.But everyone knew Jack always jumped to _ without any evidence to support his _.In _,nobody was likely to believe Jane was a thief.(conclude)Equippedequipmentaimaimlessconcludeconclusionsconclusionconclusion4.The _ showed us how the company _ to the need of the customer.(r
63、eact)5.The chemistry teacher let each student put a finger into the _ that he had _ and tasted.(mix)reactionreactedmixturemixed.单句语法填空1.If the soup is salty,you can add some boiled water _ it.2.She reacted _ the mindlessness and luxury of their lives.3.Have you got in touch with Tom?Oh,sorry.I could
64、nt think _ his phone number at the moment.4.(2018浙江高考)The steam-powered printing press was still _ its early stages;the literacy(识字)rate in England was under 50%.5.It is still too early to reach a _(conclude)on this point.toagainstofinconclusion6.They will start their project aiming _ helping the po
65、or children to be educated in Chinas west.7.The president used todays speech to expand _ remarks he made last month.8.After the experiment,everything is put _ order in the cupboard.9.(2018全国卷I)All riders are _(equip)with reflective vests and safety lights.10.Youll have to watch next week to find _ w
66、hat happens.atoninequippedout.完成句子1.Skin care is almost _popular in China _ makeup.护肤品在中国的受欢迎程度是化妆品的三倍。2.One third of my spare time _books.我三分之一的业余时间都用来读书。3._others room without knocking at the door.你不敲门就走进别人的房间是不礼貌的。three times asasis spent(in)readingIt is not polite/impolite of you to enter4._the
67、bus;well have to wait for the next one.公交车开走了,我们只好等下一辆了。5.I think _to recognize it.我认为对他们来说认识到这一点很重要。There goesits important for them.课文语法填空 It is hard to think of a world without metals.Metals are very 1._(importance)in the world.Different metals have different uses.For example,steel is 2._(use)in
68、cars,and iron is used in 3._(electricity)equipment.When we use metals,4._ is very important 5._(know)how they react 6._ different substances,for example,water and oxygen.The 7._(react)of metals with these 8._(substance)can be put in order.Potassium,Sodium,Calcium,Magnesium,Aluminium and Zinc react most 9._iron and copper react 10._(little).答案:1.important 2.used 3.electrical 4.it 5.to know6.with 7.reaction 8.substances 9.while/but 10.least