2021年外研版中考英语科普阅读理解13篇（word版 含答案）

这是一份2021年外研版中考英语科普阅读理解13篇（word版 含答案），共14页。
阅读短文，掌握其大意，从每题所给的 A、B、C、D 四个选项中，选出最佳选项。
Nw satellites are helping t frecast（预报）the weather. They are in space, and they can reach any part f the wrld. The satellites take pictures f the atmsphere（大气）, because this is where the weather frms（形成）. They send these pictures t the weather statins. S meterlgists（气象学家）can see the weather f any part f the wrld. Frm the pictures, the scientists can ften say hw the weather will change.
Tday, nearly five hundred weather statins in sixty cuntries receive satellite pictures. When they receive new pictures, the meterlgists cmpare（比较）them with earlier nes. Perhaps they may find that the cluds have changed during the last few hurs. This may mean that the weather n the grund may sn change, t. In their next weather frecast, the meterlgists can say this.
S the weather satellites are a great help t the meterlgists. Befre satellites were invented, the scientists culd frecast the weather fr abut 24 r 48 hurs. Nw they can make gd frecasts fr three r five days. Sn, perhaps, they may be able t frecast the weather fr a week r mre ahead（提前）.
1. Satellites travel _____________.
A. in space B. in the atmsphere
C. abve the grund D. abve space
2. Why d we use the weather satellites t take pictures f the atmsphere? Because __________.
A. the weather satellites can d it easily B. cluds frm there
C. the weather frms there D. the pictures can frecast the weather
3. Meterlgists frecast the weather __________.
A. when they have received satellite pictures
B. after they have cmpared new satellite pictures with earlier nes
C. befre they received satellite pictures
D. during they study satellite pictures
4. Maybe we’ll sn be able t frecast the weather fr ________.
A. ne day B. tw days
C. five days D. seven days r even lnger
5. The main（主要的）idea f this passage is that satellites are nw used in _________.
A. taking pictures f the atmsphere B. receiving pictures f the atmsphere
C. ding ther wrk in many ways D. weather frecasting
（二）
阅读下面短文，掌握其大意，然后从各题所给的A、B、C或者D四个选项中选出最佳选项。
The Internet, mbile phnes and Ipads are part f ur lives nw. Technlgy is greatly affecting all ways f ur lives, frm the ways we wrk t the ways we play. And it even causes a number f scial prblems such as clning humans.
We have had lts f technlgy and it has changed ur lives a lt. There is n dubt that humans will cntinue t use mre and mre technlgy. Here are sme examples f mdern technlgy that will change ur ideas and will affect ur lives greatly.
Glbal Psitining System (GPS) (全球定位系统)
It’s a system that uses radi signals frm satellites t shw exact (精确地) infrmatin. It tells yu where the user is n the earth in all weather cnditins. It’s made up f three parts: satellites, cntrl equipments (设备) n land and receivers.
Space Technlgy
Russian and American scientists have wrked tgether fr the Internatinal Space Statin (ISS) fr a lng time. They hpe the ISS will prvide a lng-lasting lab. Such a lab will bring humans limitless (无限的) advantages. It’s even hped that ne day space technlgy will take humans t their new huses in space.
Underwater Rbt
Hercules is a kind f Underwater Rbt with sme high technlgy equipments. It will be used t search fr ancient ships which were destryed int the deep sea during their jurney lng ag. The wrld is changing s quickly that it’s hard fr us t catch up with all the new inventins because they seem t cme ut every mnth. It’s imprtant fr us t learn abut new technlgy and the rle that it plays in ur lives. S we shuld be willing t accept mdern technlgy, r we will fall behind the time.
( )1. ______ can tell yu where the user is n the earth exactly.
A. SatellitesB. Receivers
C. Glbal Psitining SystemD. Underwater Rbt
( )2. Accrding t the passage, which is NOT true abut the ISS?
A. It has carried peple t ther planets. B. It will prvide a lng-lasting lab fr us.
C. Russian and American are wrking fr it. D. Humans will get a lt f advantages frm it.
( )3. Hercules is used t ______.
A. save lives in the seaB. take picture in the sea
C. repair the brken shipsD. lk fr the ancient ships in the sea
( )4. Frm the passage, we knw that ______.
A. the use f GPS is affected by the weather cnditins
B. it’s very imprtant fr us t learn abut new technlgy
C. it’s easy fr us t catch up with all the new inventins
D. technlgy brings us many advantages such as clning humans
( )5. What is the purpse f the passage?
A. T help us study sme new technlgy.
B. T tell us technlgy is changing the wrld.
C. T help slve the prblems that technlgy causes.
D. T remind us the advantages f technlgy are limitless.
（三）
根据短文内容填空或选出最佳答案。
Snw fell n the muntain. It snwed and snwed. The snw did nt melt（融化）. It became deep and heavy. The snw n the bttm pressed （挤压）tgether., it became ice.
The ice was very wide and thick. It began t mve dwn the muntain. It was like a river f ice. It was a glacier（冰河）.
Smetimes the glacier mved nly a few inches（英寸） each day. As it mved, it tk rcks and dirt with it. It changed the land. In sme places, it left hills. In sme places, when the glacier melted, it made rivers and lakes.
A millin years ag, there were many big glaciers. Glaciers cvered many parts f the wrld. The glaciers changed the land.
Glaciers are still at wrk tday. A glacier in the nrth f Canada is cutting a new path（路） dwn the side f a muntain. This glacier will change the land, t.
1. The snw that fell n the muntain
A. became snwman B. melted C. became ice D. turned t rain
2. The wrd in the stry that means a river f ice is __________.
3. The stry says, “The snw did nt melt. It became deep and heavy”. The wrd it means ____.
4. Which f the fllwing des this stry lead yu t believe?
A. There are nt as many glaciers as there used t be
B. Glaciers d nt change the land as they mve ver it.
C. Glaciers are fund nly in warm places.
5. Hw fast did the glacier mve? (Which sentence is exactly like the ne in yur bk?)
A. Smetimes the glacier mved nly nce a year.
B. Smetimes the glacier mved ver ten miles each day.
C. Smetimes the glacier mved nly a few inches each day.
6. The main idea f the whle stry is that _______.
A. snw is heavy B. the high land never changes C. glaciers changed the land
（四）
根据短文内容填空或选出最佳答案。
Lng ag, peple in Rme（罗马） talked t ne anther in Latin（拉丁文）. Pupils in schl learned t read and write in Latin. Bks are in Latin.
Sme Rmans（罗马人）went t ther parts f the wrld. They tk their language with them. Sn Latin was used in many cuntries. It became a wrld language.
Peple in ther cuntries did nt talk in Latin the same way. In each land, they changed the language a little. As time went by, they made mre changes. At last they did nt talk in Latin any mre. New languages had cme frm the ld ne.
Peple d nt talk t ne anther in Latin tday. But they still use many Latin wrds. Yu d, t. Street, wall, city, and salt are sme f the Latin wrds we use. Yu are a pupil in schl. Pupil is a Latin wrd. It means “little dll”.
1. Latin was used by peple in _____.
A. Rme B. the United States C. Greece(希腊) D. Texas
2. The wrd in the stry that means what peple speak and write is ______
3. The stry says, “Peple d nt talk t each ther in Latin tday. But they still use many Latin wrds,” The wrd they means ________.
4. Which f the fllwing des this stry lead yu t believe?
A. It is nt gd t change a language. B. Pupils in schls tday play with dlls.
C. Nt many peple can read Latin tday.
5. What happened t Latin when it was taken t ther cuntries?(which sentence is exactly like the ne in yur bk?)
A. In each land, peple talked abut each ther.
B. In each land, they changed the language a little
C. In each land, the children had t speak sme Latin.
6. The main idea f the whle stry is that ________.
A. Rmans did nt like t stay hme
B. peple in ld Rme talked a lt t each ther.
C. Latin changed as it mved frm land t land.
(五)
We have knwn fr a lng time that flwers f different plants pen and clse at different time f day. This is s familiar that there seems t be n need t ask the reasn fr it. Yet n ne really understands why flwers pen and clse like this at particular times. The prcess (过程) is nt as simple as we might think, as recent experiments have shwn. In ne study, flwers were kept in cnstant (连续的) darkness. We might expect that the flwers, withut any infrmatin abut the time f day, did nt pen as they nrmally d. In fact, they cntinued t pen at their usual time. This suggests that they have sme mysterius (神秘的) way f knwing the time. Their sense f time des nt depend n infrmatin frm the utside wrld; it is, s t speak, inside them, a kind f “inner clck”.
This discvery (发现) may nt seem t be very imprtant. Hwever, it was later fund that nt just plants but als animals —including man —have this “inner clck” which cntrls the wrking f their bdies and influences (影响) their activities. Men, then, are als influenced by this mysterius pwer. Whether we wish it r nt, it affects such things in ur life as ur need fr sleep, ur need fr fd.
In the past, this did nt matter very much because peple lived in natural cnditin. In the mdern wrld, things are different; nw there are spacemen, airplane pilts and, in rdinary life, a lt f peple wh have t wrk at night. It wuld be very useful, then, t knw mre abut the “inner clck”. Such rdinary things as flwers might help us understand mre abut urselves.
1. A recent experiment shwed that ________________.
A. different flwers pen and clse at different times f day
B. fr their pening and clsing, flwers d nt need infrmatin frm the utside wrld
C. flwers are influenced by weak light even when they are in a dark rm
D. flwers can be used fr telling the time
2. The “inner clck” _________________________.
A. is an unimprtant discvery B. is nly fund in animals
C. has nt been understd by far D. has an effect n human life
3. Further study f the “inner clck” will be useful because ________________.
A. it might help us in sme way
B. we d nt yet understand plants and animals well enugh
C. the number f spacemen and airplane pilts is fast increasing
D. we shuld try t live mre naturally than we d nw
4. Kept in cnstant darkness, flwers ________________________.
A. will nt pen r clse as usual B. will nt pen any lnger
C. will pen as they d in natural cnditins D. will always remain in full blssm (开花)
5. ________________ have a mysterius pwer f knwing time withut infrmatin frm the utside wrld.
A. Animals including man as well as plants B. All living things except man
C. Flwers are the nly things in the wrld that D. Neither animals nr plants
(六)
阅读短文，从A、B、C、D四个选项中选出可以填入空白处的正确答案。
In 1926, a Frenchman named Niepce needed pictures fr his business. But he was nt a gd artist. S he invented a very simple camera. He put it in a windw f his huse and tk a picture f his garden. That was the first pht. The next imprtant date in the histry f phtgraphy was in 1837. That year, Daguerre, anther Frenchman, tk a picture f his reading rm. He used a new kind f camera in a different way. In his picture yu culd see everything clearly, even the smallest thing. This kind f pht was called a Daguerretype(银版照相). Sn ther peple began t use Daguerre’s way. Travelers brught back wnderful phts frm all arund the wrld. Peple tk pictures f famus buildings, cities and muntains. In abut 1840, phtgraphy was develped. Then phtgraphers culd take pictures f peple and mving things. That was nt simple. The phtgraphers had t carry a lt f film and ther machines. But this did nt stp them, fr example, sme in the US wrked s hard. Mathew Brady was a famus American phtgrapher. He tk many pictures f great peple. The pictures were unusual because they were very lifelike. Phtgraphy als became ne kind f art by the end f the 19th century. Sme phts were nt just cpies f the real wrld. They shwed feelings, like ther kinds f art.
根据短文内容，回答下列问题。
( )1. The first pht taken by Niepce was a picture f _______.
A. his business B. his huse C. his gardenD. his windw
( )2. The Daguerretype was _______.
A. a Frenchman B. a kind f picture
C. a kind f camera D. a phtgrapher
( )3. If a phtgrapher wanted t take pictures f mving things in the year f 1840s, he had t ________.
A. watch lts f films B. buy an expensive camera
C. stp in mst cities D. take many films and smething else with him
( )4. Mathew Brady________.
A. was very lifelikeB. was famus fr his unusual pictures
C. was quite strngD. tk many pictures f mving peple
( )5. This passage tells us ________.
A. hw phtgraphy was develped
B. hw t shw yur ideas and feelings in pictures
C. hw t take pictures in the wrld
D. hw t use different cameras
(七)
根据短文内容从A、B、C、D四个选项中选出一个能填入相应空格内的最佳答案。
Is the whale the wrld’s largest fish? N. It lks like a fish, but it is really a mammal (哺乳动物). Then what’s the wrld’s largest fish? It’s the whale shark（鲸鲨）.
Althugh the whale shark is ur biggest fish and lives in many ceans （海洋）arund the wrld, few peple have ever heard f it. Scientists have nt been studying whale sharks fr very lng. Much mre needs t be learned abut them.
A whale shark is smetimes called a “gentle giant (温柔的巨人)”. It likes t be alne and desn’t care a bit abut divers r humans. The biggest whale shark weighed 24,250 punds and was nearly 40 feet lng. This makes it heavier and lnger than a schl bus.
Inside its huge muth are great numbers f very small teeth. T cunt all f them, yu’ll need t d sme math. The whale shark’s teeth are arranged in rws. There are between eleven and thirteen rws n each jaw (颚) and arund three hundred teeth in each rw.
Hwever, the whale shark rarely uses its teeth. It des nt chew r bite its fd. Large amunts f water are pulled int its muth and then pushed ut thrugh its gills (鳃).
Fr a few mnths every year, a grup f whale sharks cmes t Ningal Reef, ff Western Australia. This gives scientists a wnderful chance t study the large fish. Whale sharks d live in ther ceans f the wrld, but n ne knws their ppulatin. It is pssible that ur biggest fish may need prtecting. It is ne f the reasns why scientists cntinue t learn all they can abut these gentle giants.
( )1. Little is knwn abut whale sharks because scientists _____.
A. are nt interested in learning abut them B. find them t difficult t catch
C. d nt knw the best places t find them D. have studied them fr a shrt time
( )2. Which sentence can tell us that whale sharks are gentle?
A. They have large muths. B. They leave divers alne.
C. They have small eyes. D. They live in many ceans.
( )3. Hw des the writer help us knw what the whale shark’s muth lks like?
A. By giving reasns. B. By describing clrs.
C. By cmparing sizes. D. By using numbers.
( )4. The fifth paragraph is mainly abut _____.
A. hw a whale shark eats B. what a whale shark eats
C. hw different fish use their gills D. what’s inside a whale shark’s muth
( )5. Which f the fllwing is the best title fr the article?
A. Gentle Giants B. The Diary f a Sailr
C. The Largest Animal D. My Life n the Sea
(八)
根据短文内容从A、B、C、D四个选项中选出一个能填入相应空格内的最佳答案。
Dr. Jack Td is very interested in cleaning water. 1 . S it’s natural that he is t develp a small and affrdable system(系统)t clean waste water. His “Living Machine” can clean waste water in yur hme r in yur business.
2 .The waste water ges int a big plastic tank where bacteria(细菌)start t break dwn the waste. A few days later after it is dealt with, the water is brught int a greenhuse filled with plants and fish. 3 , the plants and animals remve(去掉) mre chemicals frm the water, making it cleaner. Then the water can be reused fr washing r bathing. 4 , but the water is clean enugh fr watering the flwer, washing the dg, r even fr bathing r swimming.
The advantage f this technlgy is that it is affrdable and gd fr the envirnment. 5, it can help t use less fresh water, and it can help keep the water supply unplluted.
根据短文内容，从下面六个选项中选出能填入文章空白处的最佳选项。
1. 2. 3 4. 5.
(九)
A kind f little cars may take the place f tday’s big nes many years later. If everyne drives such cars in the future, there will be less pllutin in the air. There will als be mre space fr parking in cities, and the streets will be less crwded.
The little cars f the future will cst less. Driving will be safer, t, since these little cars can g nly 65 kilmeters an hur. The cars f the future will be fine fr ging arund a city, but they will nt be useful fr a lng way. Little cars will g 450 kilmeters befre they need t stp fr mre gasline (汽油). If big cars are still used with the small nes, tw kinds f rads will be needed in the future. Sme rads will be needed fr the big, faster cars and ther rads will be needed fr the small, slwer nes.
根据短文内容，选择正确答案。
( )1.There is much pllutin in the air tday because _____.
A.peple drive big cars B.peple drive little cars
C.small cars will g 450 kilmeters befre they need t stp fr mre gasline
D.the usual size f cars tday is t small
( )2.The usual size f cars tday is _____.
A.much smaller than the future neB.as big as the future nes
C.as small as the future nesD.bigger than the future nes
( )3.Which f the fllwing statements (陈述) is NOT true?
A.Big cars cst mre. B.Big cars are nt useful fr a lng way.
C.The cars f the future will be smaller than tday’s cars.
D.Small cars are slwer than big nes.
( )4.The streets will be less crwded because _____.
A.there will be fewer cars in the futureB.there will be fewer peple in the streets
C.three kinds f rads will be builtD.future cars will be smaller
( )5.Tw kinds f rads will be needed in the future because _____.
A.there will be t many cars in the future
B.mre and mre peple will g t cities
C.big cars run faster and little cars run slwer
D.it lks mre beautiful t have tw kinds f rads
(十)
Stp and listen! What d yu hear? Yu may hear many different sunds. Sme f thse sunds may be nise. Nise is a lud r unwanted sund.
Many kinds f machines, such as mtrcycles, jet planes (喷气式飞机), farm tractrs can cause nise, and pwer mtrs can cause nise. And, t sme peple, rck music is als a nise.
What happens t peple wh live near nisy machines r use them ver a perid f time? Dctrs have fund that these peple have truble in sleeping. And mst imprtantly, cnstant (连续的) lud nise can cause lss f hearing.
Scientists use a unit f measure called a decibel(分贝) t measure the ludness f a sund. The sund f a quiet rm, fr example, measures 35 decibels. Talking measures between 40 and 65 decibels. Sunds frm traffic and frm sme rck bands measure ver 120 decibels. Nise at such high level causes the greatest hearing lss.
根据短文内容，判断正(T)误(F)。
( )1.Accrding t the passage, nise is all sunds that yu can hear.
( )2.A “decibel” is a machine that makes lud nise.
( )3.Lud nise can help peple sleep better.
( )4.Nt all peple think that rck music is a nise.
( )5.We can infer (推断) frm the passage that nise is a serius prblem.
(十一)
At present, t much carbn dixide(二氧化碳) makes the earth warmer and warmer and causes terrible effect t human beings. T save ur planet, t save urselves, a new lifestyle called lw-carbn life(低碳生活) becmes ppular. Lw carbn means lw energy and n waste. It is necessary fr everybdy t learn t live a lw-carbn life.
T live a lw-carbn life, we’d better save energy as pssible. Turn ff the lights and TV whenever they are nt needed. If pssible, use cld water t wash clthes r dishes. Take a shrt shwer and try t take a cld ne when the weather gets warm. Dn’t d the cking with electricity.
T live a lw-carbn life, we shuld eat less meat. Everybdy knws eating t much meat makes peple fat and easy t have heart disease, but maybe yu dn’t knw keeping animals fr fd prduces even mre carbn dixide than all the cars in the wrld, and being a vegetarian can help reduce ne and a half tns f carbn dixide a year. Maybe it is a little difficult, but it’s really necessary.
T live a lw-carbn life, we are suppsed t d less shpping. When we g shpping, we may drive a car r take ther transprtatins. On the ne hand, these machines pllute the air and waste energy. On the ther hand, mst f us always buy sme useless things because f sme advertisements. It is nt nly a waste f mney but als causes truble t the earth, because as yu knw, making everything will prduce carbn dixide mre r less.
There are many ther ways t live lw-carbn life, such as recycling things, planting trees and reusing textbks. If we can keep it a habit in ur daily life, the earth will becme a safer planet fr us t live n.
根据短文内容，选择正确答案。
( )1._____ makes the weather n the earth get warmer.
A. Little rubbish B. A waste f mney
C. T much carbn dixide D. A waste f water
( )2.We can _____ t save energy in ur daily life.
A. use less electricity B. g t sleep with lights n
C. wash clthes with ht water D. drive car t wrk
( )3.The underlined wrd “it” in the third paragraph means _____.
A. eating less meat B. having heart disease
C. keeping animals fr fd D. eating less vegetables
( )4.We shuld d less shpping because _____.
A. wasting mney causes truble t peple
B. the advertisements are smetimes misleading
C. the less yu shp, the less carbn dixide will be prduced
D.sme f the things yu bught are useless
( )5.If everybdy lives a lw-carbn life, _____.
A.we will waste mre energy
B.there will be less carbn dixide
C.the earth will becme a dangerus place t live n
D.there will be mre carbn dixide
(十二)
If yu watch the sky fr abut an hur after the sun ges dwn, yu may see sme “mving stars”. But they’re nt real stars. They’re man-made satellites(人造卫星). And the biggest f all is the Internatinal Space Statin (ISS). Frm May t July is the best seasn t watch the ISS flying ver the earth. And peple can see it with their eyes.
The ISS is the biggest satellite and scientists want t live n it. They think that the best way t learn mre abut space is t live there.
When the space statin is finished, it will be like a city in space. Peple will stay and study there with many f the things they have at hme. Labratries, living rms and pwer statins are being built. The ISS is the mst expensive space prgram. Billins f dllars are being spent n it every year.
Scientists hpe that the ISS will be a stepping stne fr future space explratin(探测). “The ISS will help us understand the human bdy better, explre space and study the earth. It can help us make life n the earth better,” said Kathryn Clark, an ISS scientist.
Sixteen cuntries are part f the prgram: the US, Russia, Canada, Japan, Brazil and 11 Eurpean cuntries. China isn’t an ISS cuntry, but it has helped with sme f the experiments. In 2003, China sent sme rice up t the ISS t find ut what space wuld d t it.
( )1.The Internatinal Space Statin_____________.
A. is really a big city in space B. is the biggest man-made satellite
C. can nly help us explre space D. is mainly built by the USA and Russia
( )3.Frm the passage we knw that_____________.
A. building the ISS is nly fr scientists t live there
B. scientists can d anything they like there
C. peple can see the Space Statin at any time
D. sixteen cuntries are members f the space prgram
( )3.The phrase “a stepping stne” prbably means “_____________”.
A. 滑梯 B. 巅峰 C. 垫脚石 D. 走廊
( )4.China sent sme rice up t the ISS is prbably t_____________.
A. be used as astrnauts’ fd B. sell it t aliens
C. d sme science experiments D. make it grw better in space
( )5.Which f the fllwing isn’t mentined ?
A. China will jin the ISS in the future.
B. The scientists are building living rms fr them in the ISS.
C. The ISS will be mre useful in the future.
D. The ISS csts the members f 16 cuntries plenty f mney every year.
(十三)
Have yu seen Avatar（《阿凡达》）? It’s a ppular 3D mvie, and yu may have t wear 3D glasses t see it. The 3D glasses make the images(图像)frm the mvie lk as if they were cming straight twards yu.
Mre and mre 3D mvies are cming t theaters. Sme say that 3D TV sets will cme int ur hmes in the near future. 3D technlgy can make TV and mvies are mre exciting. Hwever, peple with eye prblems may get headaches if they spend t much time watching 3D mvies. Why?
When we lk at an bject(物体), each eye sees it at a different angle(角度). Our eyes send the tw images t ur brain(大脑), and the brain puts them tgether. 3D technlgy uses tw film prjectrs(投影机). One prjects a left-eye-image and the ther prjects a right-eye-image. 3D glasses allw us t see a different image in each eye. S, when we are watching a 3D mvie, ur brain can’t put tgether the images sent t ur eyes. The brain needs t wrk harder at “reading” the images. That makes it easier fr peple with eye prblems t get dizzy(头晕的) r have headaches. A famus eye dctr said if yur eyes can’t fcus(聚焦) n the same bject at nce, yu will have truble watching 3D mvies.
根据短文内容，选择正确答案。
( )1. Accrding t the passage, Avatar is a ______.
A. digital camera B. digital TV set C. 3D mvie D.4D mvie
( )2. The 3D glasses can make the images frm the mvie ______.
A. lk mre beautiful than usual B. lk as if they were cming straight twards yu
C. lk as if they were far away frm yu D. lk mre clear than usual
( )3. Peple will have ______ in their hmes in the near future.
A. 3D cmputers B. 3D phnes C. 3D mvies D.3D TV sets
( )4. When we lk at an bject, ______.
A. each eye sees the bject at the same angle
B. ur brain puts the tw different pictures tgether
C. there will be tw film prjectrs in ur eyes
D. ur brain can’t put tgether the images sent t ur eyes
( )5. If yu wear a pair f 3D glasses, ______.
A. yu will see different images in bth eyes B. yur brain can’t wrk at all
C. the images can be put tgether easily by yur brain
D. ur brain can put the images tgether
一、1-5 ACBDD
二、1-5 CADBA
三、1—5 1.C 2. glacier 3.snw 3.A 4.C 5.C
四、1—5 1. A 2. language 3. peple 4. C 5. B 6. C
五、1—5 1-5 BDACA
六、1—5CBDBA
七、1—5 DBDAA
八、1—5 C E F D A
九、1—5 ADBDC
十、1—5F F F T T
十一、1—5CAACB
十二、1—5BDCCA
十三、1—5CBDBA
A. If enugh hmes and businesses use“Living Machines”
B. Water is imprtant fr us
C. He is als interested in saving mney
D. It cannt be used fr drinking r cking
E. The“Living Machine”is a system fr cleaning waste water
F. With the help f sunlight