人教版 (新课标)选修9&10Unit 2 Sailing the oceans课时作业

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这是一份人教版 (新课标)选修9&10Unit 2 Sailing the oceans课时作业，共17页。试卷主要包含了5分，满分30分)等内容，欢迎下载使用。

Ⅰ.阅读理解(共15小题；每小题2分，满分30分)
A
Rbert Ballard was brn in 1942. Frm an early age, he lved the sea. Ballard grew up in Suthern Califrnia. He spent his free time at the beach near his hme. He enjyed fishing and swimming. He even learned t dive.
When Ballard wasn't at the cean, he lved reading abut it. At age 10, he read Twenty Thusand Leagues Under the Sea, a bk which describes the undersea adventures f Captain Nem. Ballard decided he wanted t be like Captain Nem when he grew up. His parents helped him fllw his dream.
Ballard was a hardwrking student. He spent many years learning all he culd abut the cean. By the age f 28, he was an expert. In 1970，he tk a jb as a scientist at Wds Hle Oceangraphic Institute in Massachusetts. There he studied underwater muntains f the Atlantic Ocean. He came up with ways t predict vlcanes under the ceans. Wrking with ther scientists, Ballard als fund previusly unknwn sea animals. These animals lived far belw the cean' s surface，where scientists had believed n animals culd live.
By the 1980s, Ballard's interests changed. He develped unmanned vehicles t explre the cean bttm. His first find, the wellknwn ship Titanic, made Ballard famus. He was nt happy with just ne big find, hwever.He lked fr and fund ther wellknwn ships. One was the German battleship Bismarck. Anther was the USS. Yrktwn，an aircraft carrier (航空母舰) that sank during Wrld War Ⅱ.
Tday Rbert Ballard is still an underwater explrer. He als heads an rganizatin that encurages students t learn abut science. Ballard hpes that sme f the students will fllw in his ftsteps. After all, the wrld's huge ceans are mstly unknwn. Wh knws what remains t be discvered under the sea?
【语篇解读】本文是一篇记叙文，主要叙述了Rbert Ballard成为水下探险家的经过。
1．What was Ballard's dream when he was yung?
A．T be a science teacher.
B．T be a famus writer.
C．T be an animal expert.
D．T be an underwater explrer.
【解析】细节理解题。根据第二段第三句“Ballard decided he wanted t be like Captain Nem when he grew up.”并结合第二段第二句可知，他的梦想是成为水下探险家。
【答案】 D
2．When Ballard wrked at Wds Hle Oceangraphic
Institute, he________．
A．explred the undersea wrld by ship
B．thught f ideas t predict underwater
vlcanes
C．fund sme unknwn sea animals alne
D．set up an rganizatin t teach students science
【解析】细节理解题。根据第三段第六句“He came up with ways t predict vlcanes under the ceans.”可知，他想出了预测水下火山爆发的方法。
【答案】 B
3．Which is the crrect rder f the events mentined in the text abut Ballard?
a．He fund the German battleship Bismarck.
b．He read a bk abut Captain Nem.
c．He fund the famus ship Titanic.
d．He became an expert in science.
A．b－c－d－a B．d－b－c－a
C．b－d－c－a D．d－c－a－b
【解析】细节理解题。根据第二段内容可知，他10岁时读了有关Nem船长的书，根据第三段内容可知，他1970年时成为一名科学家；根据第四段内容可知，到20世纪80年代，他发现了泰坦尼克号，之后发现了德国俾斯麦号战舰。
【答案】 C
4．What can we learn frm the text?
A．Ballard was greatly influenced by Twenty Thusand Leagues Under the Sea.
B．Ballard didn't like fishing and swimming in his childhd.
C．Ballard's parents felt disappinted at his undersea adventures.
D．Human beings have explred mre than half f the sea.
【解析】推理判断题。根据第二段内容可知，Rbert Ballard读了《海底两万里》这本书使他明确了他的理想，并为之努力，最终获得了成功。因此这本书影响了他的一生。
【答案】 A
B
【导学号：15680051】
Cral reefs(珊瑚礁)are nt just beautiful t lk at, but als very useful. They shelter nearly 25% f cean life and prvide fd fr billins f peple. Hwever, like many ther species, this amazing ecsystem(生态系统)is in danger f dying ut!
There are tw main reasns fr the destructin—the rising carbn dixide levels caused by glbal warming as well as human influences like bttm peratin. While nt much can be dne abut the frmer, the lss caused by the latter can be reduced.
Bttm peratin invlves drpping nets t the cean bed and then dragging them up when filled with fish. This actin damaged the cean flr, causing the cral branches t separate frm the reefs. While that is very discuraging, the gd news is that if these branches are fund quickly, they can be saved. At present, that wrk is being perfrmed by vlunteer divers. But the methd has nly limited success because they cannt stay lng underwater, nr reach depths f ver 200 meters where sme f the deepsea cral grws.
Hwever, this is nt the case fr Cralbts－the rbts that can cnstantly seek ut brken branches. A team f ‘cralbts’， each individually wrking t simple rules will piece tgether damaged bits f cral, allwing them t regrw. They are prgrammed t be able t distinguish between ther things and the cral. The rbts wrk tgether in grups, similar t bees. If ne cralbt is damaged then the thers will still be able t cmplete the task.
Dr LeaAnne Henry said, “The prject f using cralbts ffers us the pssibility t restre(修复) the functin f reefs. It is in the final stage f testing. Once ready, the researchers hpe t build hundreds f them and use them effectively in the waters ff Sctland and then hpefully in the ceans acrss the wrld.”
【语篇解读】这是一篇说明文。美丽的珊瑚礁不仅在维系海洋生态平衡方面起着十分重要的作用，它与我们的日常生活也息息相关。对于面临灭绝的珊瑚礁我们能做点什么呢？
5．Which f the fllwing is a cause f the danger that cral reefs are facing?
A．The appearance f new creatures.
B．The seriusly plluted sea water.
C．The activities f vlunteer divers.
D．Human activities like bttm peratin.
【解析】事实细节题。根据第二段首句中的“ well as human influences like bttm peratin.”可知答案为D。
【答案】 D
6．Cmpared with vlunteer divers, cralbts________.
A．can stay lnger underwater
B．must wrk as bees d
C．can distinguish what is cral
D．can never be damaged
【解析】推理判断题。由第三段可知，目前修复受损珊瑚礁的工作由潜水志愿者完成。但他们因为不能长时间待在水下而使工作效果大打折扣。再结合第四段首句可知机器人在水下停留的时间会长些。故答案为A。
【答案】 A
7．What des the underlined wrd“them” in the last paragraph refer t?
A．Cralbts. B．Brken branches.
C．Wrking bees. D．Bits f cral.
【解析】词义猜测题。由上文可知，修复受损珊瑚礁的机器人目前还处于调试阶段。结合语境可以推断，一旦调试完毕，研究者们希望批量生产这种机器人。因此答案为A。
【答案】 A
8．We can infer frm the passage that________．
A．bttm peratin has affected mst underwater creatures
B．brken branches f cral can regrw if saved in time
C．hundreds f the cralbts have wrked well in the ceans
D．with the cralbts all damaged cral reefs can be restred
【解析】推理判断题。根据第三段首句可知A项没有依据；由最后一段可知这种机器人尚未正式投入使用，故排除C项；由于D项中的all一词过于绝对，此项也不可选。而根据倒数第二段中的“ seek ut brken branches”和“ tgether damaged bits f cral，allwing them t grw.”可知答案为B。
【答案】 B
C
Life in the Clear
Transparent animals let light pass thrugh their bdies the same way light passes thrugh a windw. These animals typically live between the surface f the cean and a depth f abut 3，300 feet — as far as mst light can reach. Mst f them are extremely delicate and can be damaged by a simple tuch. Snke Jhnsen, a scientist in bilgy, says，“These animals live thrugh their life alne. They never tuch anything unless they're eating it, r unless smething is eating them.”
And they are as clear as glass. Hw des an animal becme seethrugh? It's trickier than yu might think.
The bjects arund yu are visible because they interact with light. Light typically travels in a straight line. But sme materials slw and scatter (散射) light, buncing it away frm its riginal path. Others absrb light, stpping it dead in its tracks. Bth scattering and absrptin make an bject lk different frm ther bjects arund it, s yu can see it easily.
But a transparent bject desn't absrb r scatter light, at least nt very much. Light can pass thrugh it withut bending r stpping. That means a transparent bject desn't lk very different frm the surrunding air r water. Yu dn't see it — yu see the things behind it.
T becme transparent, an animal needs t keep its bdy frm absrbing r scattering light. Living materials can stp light because they cntain pigments (色素) that absrb specific clrs f light. But a transparent animal desn't have pigments, s its tissues wn't absrb light. Accrding t Jhnsen, aviding absrptin is actually easy. The real challenge is preventing light frm scattering.
Animals are built f many different materials — skin, fat, and mre — and light mves thrugh each at a different speed. Every time light mves int a material with a new speed, it bends and scatters. Transparent animals use different tricks t fight scattering. Sme animals are simply very small r extremely flat. Withut much tissue t scatter light, it is easier t be seethrugh. Others build a large, clear mass f nnliving jellylike (果冻状的) material and spread themselves ver it.
Larger transparent animals have the biggest challenge, because they have t make all the different tissues in their bdies slw dwn light exactly as much as water des. They need t lk unifrm. But hw they're ding it is still unknwn. One thing is clear: fr these larger animals, staying transparent is an active prcess. When they die, they turn a nntransparent milky white.
【语篇解读】本文是一篇说明文。文章解释了生活在海洋中的透明生物的特点、透明原理以及形成机制。
9．Accrding t Paragraph 1, transparent animals ________．
A．stay in grups
B．can be easily damaged
C．appear nly in deep cean
D．are beautiful creatures
【解析】细节理解题。根据第一段中的Mst f them are extremely delicate and can be damaged by a simple tuch.可知，大部分的透明生物是非常脆弱的，仅碰一碰就会受到损害，故B项“很容易受到损害”正确。A项“集体待在一起”和D项“是美丽的生物”在第一段中没有提到；根据第一段中的between the surface f the cean and a depth f abut 3，300 feet可知，它们生活在海面与海面以下大约3 300英尺之间的海水中，故C项“只出现在深海中”错误。
【答案】 B
10．The underlined wrd “dead” in Paragraph 3 means________．
A．silently B．gradually
C．regularly D．cmpletely
【解析】词义猜测题。由第三段可知，我们能看到物体一类是因为它们减慢了光速和对光进行了散射，使其改变了原来的路线，而另外一类是因为它们对光线的吸收。既然吸收了，那么在光的传播过程中就被完全阻止了，因此这里dead意为“完全地”，故选D。
【答案】 D
11．One way fr an animal t becme transparent is t________．
A．change the directin f light travel
B．gather materials t scatter light
C．avid the absrptin f light
D．grw bigger t stp light
【解析】细节理解题。根据第五段中的T becme transparent, an animal needs t keep its bdy frm absrbing r scattering light.可知，想变透明就要让身体避免对光线吸收或进行散射，因此C项“避免光线的吸收”是其中的一个方法。A项“改变光传播的方向”，B项中的t scatter light(散射光)和D项中的t stp light(阻止光)都是我们可看见物体的原因，不是透明生物的特点，均应予以排除。
【答案】 C
12．The last paragraph tells us that larger
transparent animals________．
A．mve mre slwly in deep water
B．stay seethrugh even after death
C．prduce mre tissues fr their survival
D．take effective actin t reduce light spreading
【解析】推理判断题。D项中的take effective actin和最后一段倒数第二句中的an active prcess是同义表达，reduce light spreading和最后一段第一句中的slw dwn light是同义表达，故D项正确。最后一段中没有提到A、C两项；根据最后一段最后一句中的they turn a nntransparent milky white可知，它们死后会变成不透明的乳白色，故B项错误。
【答案】 D
D
When my father was getting ready fr wrk，ur huse was ruled by kncks and wrds.
He used t cme dwnstairs t breakfast.
The mrning paper lay beside his plate.He always read the “Deaths” first，and then he kncked nce n the table.One f my sisters brught his bread，already buttered fr him.Usually he said nthing，but nce I heard him say，“I lve yu very much，Edith．I wuld lve mre if yu buttered my bread n bth sides.” He read the paper all thrugh breakfast.
Tw kncks n the table meant “I am ready fr my tea.” If a single knck fllwed，that meant，“Mre bread，please.”
After breakfast he said，“Bts.” The paper was spread(展开) fr him ver the back f an armchair.Yesterday's paper was put n the chair fr his feet，and his bts were brught t him，freshly cleaned.He read standing at the same time putting n his bts.With ne bt finished he said，“Bus.” At that pint ne f the girls went utside t the garden gate and waited there.Her jb was t stp a bus when it came.It came early smetimes and it had t wait fr my father.“Overcat，hat.” One f my sisters had already brushed his vercat.Nw she held it pen fr him.Anther girl came with his hat，nicely brushed.“Handkerchief，pipe(烟斗)．” They were brught and put，with his tbacc(烟草)，int his pcket.He lked ut f the windw and said either “Walking stick” r “Umbrella”．It was handed t him.Ready nw，he was still reading the paper.He didn't put it dwn until he heard the shut “Bus cming！” Then he kissed my mther and went ut.The girls breathed freely.
Hw lucky a man was t have a wife and five daughters at hme!
【语篇解读】本文讲一个幸福的男人在早上由他的五个女儿和妻子服侍的故事。
13．When the father made the first knck，he meant ________.
A．he had begun t read the mrning newspaper
B．he was made t feel sad by the“Deaths” news
C．he wuld start t read the ther parts f the paper
D．his breakfast shuld begin
【解析】细节理解题。根据第三段第二、三句 then he kncked nce n the table.One f my sisters brught his bread，already buttered fr him 可知答案为 D。
【答案】 D
14．What des “Edith” mean?
A．A kind f bread.
B．One f the writer's sisters.
C．The writer.
D．The writer's mther.
【解析】词义猜测题。根据 I lve yu very much，Edith.I wuld lve mre if yu buttered my bread n bth sides 可知 Edith 是他女儿的名字。
【答案】 B
15．Frm the stry we may see that________．
A．the father was s lazy that he hardly did anything
B．the father was the “centre” f the family
C．every girl in the family was afraid t d wrng because they didn't knw clearly enugh what t d
D．the father was hated by all his daughters
【解析】推理推断题。看过全文我们知道整个早上他家里所有的人都在为他服务，由此可以看出他的家是以他为中心的，因此应该选择 B。
【答案】 B
Ⅱ.阅读填句(共5小题；每小题2分，满分10分)
__16__ Yu prbably think yu will never be a tp student.This is nt necessarily s, hwever.Anyne can becme a better student if he r she wants t.Here's hw：
Plan yur time carefully.When planning yur wrk, yu shuld make a list f things that yu have t d.After making this list, yu shuld make a schedule f yur time.First set yur time fr eating, sleeping, dressing, etc.Then decide a gd, regular time fr studying.__17__A weekly schedule may nt slve all yur prblems, but it will frce yu t realize what is happening t yur time.
Find a gd place t study.Lk arund the huse fr a gd study area.Keep this space, which may be a desk r simply a crner f yur rm, free f everything but study materials.N games, radis, r televisin.When yu sit dwn t study, cncentrate n the subject.
Make gd use f yur time in class.__18__Listening carefully in class means less wrk later.Taking ntes will help yu remember what the teacher says.
Study regularly.When yu get hme frm schl, g ver yur ntes, review the imprtant pints that yur teacher is ging t discuss the next day and read that material.__19__If yu d these things regularly, the material will becme mre meaningful, and yu'll remember it lnger.
Develp a gd attitude twards tests.The purpse f a test is t shw what yu have learned abut a subject.They help yu remember yur new knwledge.The wrld wn't end if yu dn't pass a test, s dn't be verwrried.
__20__Yu will prbably discver many thers after yu have tried these.
A．There are many methds that might help yu with yur studying.
B．Dn't frget t set aside enugh time fr entertainment.
C．Take advantage f class time t listen t everything the teacher says.
D．N ne can becme a tp student unless he r she wrks hard.
E．Maybe yu are an average student.
F．Make full use f class time t take ntes f what the teacher says in class.
G．This will help yu understand the next class.
【答案】 16－20 EBCGA
Ⅲ.完形填空(共20小题；每小题1.5分，满分30分)
【导学号：15680052】
Nellie Melba was Australia's “Queen f Opera”. She was brn in Melburne in 1861 and her__21__ name was Helen Prter Mitchell. She grew up in a musical family where she shwed great__22__ in music and studied it. When she was 20, Helen Mitchell married the manager f a Queensland sugar farm.__23__she was nt happy and the next year she went back t Melburne t __24__her music and__25__lessns. She wanted t make a__26__fr herself as an pera singer.
In 1886 she went t Lndn. But__27__there seemed interested in this yung__28__singer frm Australia. She went t Paris t have lessns frm a wellknwn teacher. In December 1886 she gave a__29__in which she used the name “Nellie Melba” in hnr f Melburne，her__30__．
Nellie Melba was sn a__31__. She sang in Lndn, Eurpe，Russia and America. She was paid__32__every time she sang. In 1902 she__33__t Melburne, which was well__34__and thusands f peple__35__in the streets fr her. They waved and__36__as she drve by. Frm then n she__37__her time between Lndn and__38__. During Wrld War Ⅰ she sang in many cncerts t__39__mney fr her cuntry.
In 1918 Nellie Melba was __40__ a dame (＝an imprtant wman) f the British Empire.
【语篇解读】 Helen Prter Mitchell于1861年出生在墨尔本。她出生于音乐世家，对音乐非常感兴趣。20岁时嫁给了昆士兰州的一个老板，但是婚姻并不幸福。后来又回到了家乡继续她的音乐生涯，她到了伦敦未得到认可，然后去巴黎从师于一位著名的教师，后来成为著名歌星，1902年返回家乡时，成千上万的人在大街上迎接她。
21．A.real B．right
C．true D．family
【解析】演员通常有艺名和原名，人们常提起的是艺名，因此这里指她的真名叫Helen Prter Mitchell，而true意为“真的”与false(假的)相对。
【答案】 A
22．A.lve B．interest
C．pwer D．expert
【解析】 shw interest in 为固定词组，表示“对……表现出兴趣”。
【答案】 B
23．A.And B．Still
C．But D．Because
【解析】根据nt happy可知此处表示转折。她嫁了人却并不幸福。
【答案】 C
24．A.cntinue B．study
C．take D．keep
【解析】这里指她回到墨尔本，“继续”她的音乐课程。
【答案】 A
25．A.pian B．singing
C．dancing D．language
【解析】她对音乐感兴趣，因此，她应该上音乐课，此处指演唱课程。
【答案】 B
26．A.stry B．sng
C．name D．part
【解析】 make a name fr sb. as sth.为固定词组，表示“某人作为……而成名”，有时也可把make换成win。
【答案】 C
27．A.everybdy B．all
C．n ne D．nne
【解析】她来到伦敦，希望能够取得成功，但是，似乎没有人对她感兴趣，因此，她又去巴黎，从师于一位著名的教师。n ne表示“没有人”，相当于nbdy。
【答案】 C
28．A.unknwn B．wellknwn
C．famus D．successful
【解析】当时，她来到伦敦希望成功，当然是一个不知名的歌手。
【答案】 A
29．A.lessn B．lecture
C．cncert D．reprt
【解析】一个歌手当然是举办音乐会。
【答案】 C
30．A.family B．hmetwn
C．teacher B．schl
【解析】由文中第一段第二句话可知她出生在Melburne，所以说Melburne就是她的故乡。
【答案】 B
31．A.star B．singer
C．prfessr D．teacher
【解析】很快，她成为歌星，star此处表示歌星。
【答案】 A
32．A.gd B．badly
C．little D．well
【解析】她成了歌星，报酬当然会很高。well此处用来修饰pay，pay为动词，应用副词修饰。
【答案】 D
33．A.returned B．went
C．gt D．drve
【解析】她一直在外学习、演出，1902年她又回到故乡，故用return。
【答案】 A
34．A.rganized B．dressed
C．cleaned D．built
【解析】此处dress表示“装扮、装饰”之意。城市被装扮一新。
【答案】 B
35．A.lined B．std
C．crwded D．waited
【解析】有成千上万的人在街上等着看她。wait与后面的fr搭配构成wait fr意为“等待”。line沿……排成行；crwd拥挤。
【答案】 D
36．A.laughed B．cheered
C．shuted D．cried
【解析】 wave挥手，cheer欢呼，因为大家都很喜欢她，所以大家热烈地欢迎她。
【答案】 B
37．A.divided B．separated
C．spent D．lived
【解析】 divide可与between连用，between后常接具体的事。这里表示她在伦敦和澳大利亚之间来回跑。
【答案】 A
38．A.America B．Russia
C．Australia D．France
【解析】从第一段第一句“Australia's‘Queen f pera’”以及第二段第二句“this yung__28__singer frm Australia”可以判断出，她是澳大利亚人，她在伦敦与家乡之间来回跑，即她在伦敦和澳大利亚之间来回跑。
【答案】 C
39．A.earn B．cllect
C．make D．bring
【解析】她开演唱会，为她的祖国募集钱。cllect表“收集，募集”。
【答案】 B
40．A.called B．made
C．given D．thught
【解析】 make sb. sth.使某人成为……＝sb.be made sth.某人成为……
【答案】 B
Ⅳ.语法填空(共10小题；每小题1.5分，满分15分)
When I was a tenyearld girl，I was nce asked t deliver a speech titled “A Real Test in My Life”．T talk befre the whle class！Just imagine hw 41.________(terrible) shy I was the mment I thught f that with s many eyes fixed upn me.I had n ther 42.________(chse)，thugh.First I was t draft the speech and that was just a piece f cake fr me，because I was a gd writer—smething t pride myself in.But the hard part 43.________(lie) in my ral presentatin：t read frm 44.________paper was nt allwed；I had t give the speech 45.________my memry and in frnt f such a big audience！A real trial began when I std n the platfrm with my legs 46.________(tremble) and my mind blank.I didn't knw.Hw much time had passed by.My listeners were still waiting，patiently and withut any signs f rushing me.Gradually I fund 47.________(I) back，giving ut my speech with difficulty.Finally I finished.After 48.________ seemed t be a hundred years，I fund my audience applauding.I made it！Frm then n，my fear f talking befre an audience disappeared.Actually with my cnfidence building up，I nw turn ut t be a great speaker.Lking back，I knw the 49.________(great) difficulty n ur way t success is ur fear；vercme it，50.________ we will be able t achieve ur gals.
【答案】 41.terribly 42.chice 43.lay 44.the 45.frm 46.trembling 47.myself 48.what 49．greatest 50.and
Ⅴ.短文改错(共10小题；每小题1分，满分10分)
Hw are yu? Tday I've gt a wnderful news t tell yu. I have ffered a schlarship at a university in Australia fr my further educatin. Tw hundreds and twenty students tk exams but nly a few was chsen and I was ne f them. Hwever, my parents are nt happy abut it. They are strng against my ging there. They say it is t far away that they will nt see me fr a whle year and they are afraid I will feel lnely. They culdn't imagine a girl s yung living alne. They advise me t study in the capital instead. Then I'll be able t cntinue living with us. Please give me sme advice and tell me why I can persuade them t accept the fact what I have grwn up.
【答案】 Hw are yu? Tday I've gt wnderful news t tell yu. I have ffered a schlarship at a university in Australia fr my further educatin. Tw eq \f(hundreds,hundred) and twenty students tk exams but nly a few eq \f(was,were) chsen and I was ne f them. Hwever, my parents are nt happy abut it. They are eq \f(strng,strngly) against my ging there. They say it is eq \f(t,s) far away that they will nt see me fr a whle year and they are afraid I will feel lnely. They eq \f(culdn't,can't) imagine a girl s yung living alne. They advise me t study in the capital instead. Then I'll be able t cntinue living with eq \f(us,them). Please give me sme advice and tell me eq \f(why,hw) I can persuade them t accept the fact eq \f(what,that) I have grwn up.
Ⅵ.书面表达(满分25分) 【导学号：15680053】
假如你是新华中学的学生李华，不久前某英语杂志社举办“建设节约型校园”征文比赛。请你根据以下提示用英语写一篇征文：
1．学校里浪费的现象，如水、电与餐厅食物等；
2．浪费造成的危害；
3．你的建议与措施。
注意：1.词数：100左右；
2．可适当增加细节，以使行文连贯。
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【参考范文】
Building Up a Saving Campus
Our schl campus is becming mre and mre beautiful.But did yu ntice with the imprvement f peple's living standard，hw much is wasted n campus？Fr example，sme students leave the lights n in the daytime，waste running water after washing dishes.In the dining hall，yu can see a lt f fd thrwn away every day.
The habit f being wasteful has a bad effect n ur character.We have t pay fr thse things wasted，and this adds t ur expense.What is wrse，we are wasting the earth's resurce.S it's high time we dealt with this prblem.
Hw t reduce the waste？In my pinin，it is everybdy's duty t save energy and resurces.We must start with urselves and frm nw！Then ur sciety will g n develping and ur life will be better.