上海市2020年中考英语二轮专题练习：阅读理解之地球与太空(12篇 含答案）

Passage 1
In 1901，H.G.Wells, an English writer, wrote a book describing a trip to the moon. When the explorers landed on the moon, they discovered that the moon was full of underground cities. They expressed their surprise to the “moon people” they met. In turn, the “moon people” expressed their surprise. “Why,” they asked, “are you traveling to outer space when you don’t even use your inner space?”
H.G.Wells could only imagine travel to the moon. In 1969, human beings really did land on the moon. People today know that there are no underground cities on the moon. However, the question that the “moon people” asked is still an interesting one. A growing number of scientists are seriously thinking about it.
Underground systems are already in place. Many cities have underground car parks. In some cities, such as Tokyo, Seoul and Montreal, there are large underground shopping areas. The “Channel”，a tunnel connecting England and France, is now complete.
But what about underground cities？Japan’s Taisei Corporation is designing a network of underground systems, called “Alice Cities”. The designers imagine using surface space for public parks and using underground space for flats, offices, shopping, and so on. A solar dome would cover the whole city.
Supporters of underground development say that building down rather than building up is a good way to use the earth’s space. The space, they say, can be used for farms, parks, gardens, and wilderness. H.G.Wells “moon people” would agree. Would you?
1. The explorers in H. G. Well’s story were surprised to find that the “moon people” ．
A. knew so much about the earth B. understood their language
C. lived in so many underground cities D. were ahead of them in space technology
2. What does the underlined word “it”（paragraph 2）refer to? ______.
A. Discovering the moon’s inner space B. Using the earth’s inner space
C. Meeting the “moon people” again D. Traveling to outer space
3. What sort of underground system are already here with us? _______.
A. Offices, shopping areas, power stations B.Tunnels, car parks, shopping areas
C. Gardens, car parks, power stations D.Tunnels, gardens, offices
4. The word “wilderness” in the last paragraph means ______ ．
A. wildlife B. poor districts
C. desert D. an area that is not allowed to build on
5. What would be the best title for the text? _______
A. Alice Cities—Cities of the Future B. Space Travel with H.G.Wells
C. Enjoy Living Underground D. Building Down, not Up
参考答案; CBBD

Passage 2
From far out in space, Earth looks like a blue ball. Since water covers three-fourths of the Earth’s surface, blue is the color we see most. The continents look brown, like small islands floating in the huge, blue sea. White clouds cover around the Earth like a light blanket. The Earth is shaped like a sphere, or a ball. It is 25,000 miles around! It would take more than a year to walk around the whole planet. A spaceship can fly around the widest part of the sphere in only 90 minutes.
Even though spaceships have traveled to the Moon, people cannot visit the Moon without special suits. The Moon has no air or water. Plants and animals can’t live there either. Astronauts first landed on the Moon in 1969. After that, there were six more trips to the Moon. They brought back Moon rocks, which scientists are still studying. There are holes, or craters, all over the Moon’s surface. Scientists believe that meteorites（陨石）smashed into the Moon millions of years ago and formed the craters.
The Sun is the closest star to Earth. A star is a hot ball of burning gas. The Sun looks very big because it is so close. But the Sun is just a medium-sized star. Billions of far-away stars are much bigger than our Sun. The burning gases from the Sun are so hot that they warm the Earth from 93 million miles away! Even though the Sun is always shining, the night here on Earth is dark. That’s because the Earth rotates, or turns around, every 24 hours. During the day, the Earth faces the Sun. Then we see light. During the night, the Earth turns away from the Sun. Then it faces the darkness of space.
Each day we learn more about the Earth, the Moon and the Sun.
1.When we look at the Earth from outer space, the color we see most is blue because ________ .
A. most of the Earth is covered in land
B. the Sun’s rays make the Earth look blue
C. most of the Earth is covered in water
D. clouds wrap around the Earth
2. What’s the meaning of the underlined word “smashed” in the second paragraph?
A. crashed B. made C. broke D. got
3.What causes daylight on Earth?
A. The full Moon causes daylight.
B. Daylight is caused by the Earth facing away from the Sun.
C. The heat of the Sun’s rays causes daylight.
D. Daylight is caused by the Earth facing toward the Sun.
4.Which of the following sentences BEST describes the Sun?
A. The Sun looks small because it is so far from Earth.
B. The Sun is a ball of burning gases that gives the Earth heat and light.
C. The Sun is a small star.
D. The Sun is not as hot as it looks.
5.What is the main idea of the text?
A. Plants and animals can’t live on the Moon.
B. Without the Sun we would have no heat or light.
C. We know a lot about the Earth, Moon, and Sun, but there is still more to learn.
D.From outer space, the Earth looks tiny, even though it is thousands of miles around.

参考答案： CADBC


Passage 3
Space travel is definitely bad for astronauts’ bones, reducing their bone density(密度) after only a month of weightlessness, according to French research published on Friday.
Laurence Vico and his fellow workers at St Etienne University called for more research into the effects of microgravity, after their study of 15 astronauts from the Russian MIR station showed bone loss continued throughout space flights.
“Bone loss was especially striking in four astronauts, ” the scientists reported in the Lancet Medical Journal.
They measured the bone mineral density (BMD) of bones in the forearm(前臂) and lower leg of the astronauts who had spent one to six months in space.
The BMD loss was significant in the tibia(胫骨) of the lower leg, a weight-bearing bone, but barely changed in the radius(桡骨) of the forearm. “Our results indicate the need to investigate not only different bones, but also different areas of the same bone since not all sites of the skeleton (骨架) are similarly affected by space conditions, ” they added.
Without gravity the body isn’t bearing any weight so there is no need for calcium (钙) which makes bones strong, and it becomes empty into the bloodstream.
The research team suggested in future scientists should try to determine if the loss of bone density was only on weight-bearing bones on longer flights, also the possible recovery after returning to Earth.
1. French scientists did their research on Russian astronauts, because _______.
A. they only cared for the Russian astronauts
B. they were not interested in their own astronauts
C. the Russian government invited them to do their research
D. the Russian astronauts worked in space for a long time
2. Scientists have found that _______.
A. the BMD loss may cause serious illness to astronauts
B. the BMD loss may cause some change in astronauts’ bodies
C. astronauts shouldn’t care about the BMD loss
D. astronauts should take some calcium before space travel
3. What cause the BMD loss to astronauts, according to this passage?
A. The food they eat in space. B. The drinks they take in space.
C. The temperature in space. D. The gravity in space.
4. In the third paragraph, the word “striking” means ______.
A. unusual B. simple C. weak D. slow
参考答案(1—4 DBDA)



Passage 4
　　Water goes around and around Earth in a never ending journey called the water cycle（循环）。 The sun heats up lakes, oceans, and other wet places on Earth. When the water gets warm enough, it changes into vapour. Plants also give off lots of water vapour. Some of this water vapour cools off high in the sky and becomes clouds. Then it falls back to Earth in a new place as rain or snow. This cycle happens over and over again.
　　The ground can absorb water like a sponge （海绵）。 If you could see this groundwater, it wouldn’t look like a lake or river. The groundwater is mixed in with the rocks and sand that lie in layers（层） below Earth’s surface.
　　Groundwater moves along slowly. How slowly? Maybe 1.5 kilometres in one century. Some of this water has been underground for thousands of years. And once groundwater is pumped out of the ground from a deep well（井） by people, it may take hundreds of years for another water to take its place.
　　1.In which order does water go around Earth?
　　a .Fall down as rain or snow.
　　b. Heated up by the sun on lakes, oceans and other wet places.
　　c. Cool off high in the sky.
　　d. Form clouds.
　　e. Change into vapour.
　　A. dacbe B. becda C. caebd D. bceda
　　2. The groundwater seems to________.
　　A. be just on the ground B. be pure water like that in a lake or river
　　C. exist in rocks and sand D. flow along like rivers or streams
　3. The underlined word “pumped” in the passage can be replaced by________.
　　A. run B. pushed
　　C. drawn D. picked
　　4. What conclusion（结论） can we draw from the passage?
　　A. Groundwater can be quickly replaced by other water once pumped out.
　　B. Groundwater is very valuable.
　　C. Groundwater has nothing to do with human beings.
　　D. Groundwater travel in an unknown way.
　　1-4 BCCB




Passage 5
　　Satellites are an important part of our ordinary lives.For example, the information for weather forecasts is sent by satellite.Some satellites have cameras which take photographs of the Earth to show how clouds are moving.Satellites are also used to connect our international phone calls.
　　Computer connections of the World Wide Web and Internet also use satellites. Many of our TV programs come to US through satellites.Airplane pilots also sometimes use a satellite to help them find their exact location.
　　We use satellites to send television pictures from one part of the world to another.They are usually 35，880 kilometers above the equator.Sometimes we can see a satellite in the sky and it seems to stay in the same place.This is because it is moving around the world at 11，000 kilometers an hour—exactly the same speed that the earth rotates.A satellite must orbit the Earth with its antennae（天线）facing the earth.Sometimes, it moves away from its orbit，So there are little rockets on it which are used to put the satellite back in the right position.This usually happens about every five or six days.
　　Space is not empty! Every week, more and more satellites are sent into space to orbit the Earth.A satellite usually works for about 10-12 years.Satellites which are broken are sometimes repaired by astronauts or sometimes brought back to Earth to be repaired.Often，very old or broken satellites are left in space to orbit the Earth for a very long time.This is very serious because some satellites use nuclear power and they can crash into each other.
　　1.Which of the following is NOT done by satellites according to the passage?
　　A.Sending information for weather forecast.
　　B.Taking photographs of the Earth.
　　C.Sending TV pictures.
　　D.Providing food for airplane pilots.
　　2.What’s the speed the earth rotates at?
　　A.35,880 kilometers per hour. B.335,880 kilometers per hour.
　　C.11,000 kilometers per hour. D.110,000 kilometers per hour
　　3.Why does the satellite move around the world at the same speed as the Earth rotates?
　　A.In order to take photographs.
　　B.In order to stay in a certain position in the orbit.
　　C.In order to move away from its orbit.
　　D.In order to send television pictures.
　　4.What does the underlined word “This” in the 3rd paragraph refer to?
　　A.A satellite. B.A little rocket.
　　C.A satellite seems to stay in the same place in the sky.
　　D.The satellite puts the rockets in the right position.
　　5.Which is true of satellites?
　　A.A satellite usually works for about 10-12 years.
　　B.Every time a satellite gets broken，it is brought back to the Earth to be repaired.
　　C.A broken satellite is never left in space.
　　D.They often crash into each other.
　　1-5 DCBCA



Passage 6

If your cellphone suddenly stops working, don't blame the service provider. The malfunction(故障) might have been caused by something bigger—a solar storm. Experts expect that the earth will see more solar activities in the near future. The malfunction of electronic devices is just one of the effects.
Sunspots(太阳黑子) serve as an indicator of the sun's activity. For the past two years, sunspots have mostly been missing. Their absence, the?longest in nearly 100 years, has taken even sun watchers by surprise.
When the number of sunspots drops at the end of each 11-year cycle, solar storms die down and all become much calmer. This “solar minimum” doesn't last long. Within a? year, sunspots and solar storms begin to build toward a new?crescendo,_the next solar maximum.
What's special about this latest cycle is that the sun is having trouble starting the next solar cycle. The sun began to calm down in late 2007, so no one expected many sunspots in 2008. They should return in 2010. Scientists have predicted that the next solar cycle could be the most active on record: more sunspots and more solar storms.? However, sunspots are mostly missing now.
Since the earth is in close contact with the sun, strong solar activities can bring trouble to our life.? People of the 21st century rely on high-tech systems for the basics of daily life. Air travel and radio communications can be affected by strong solar activities.? A big solar storm could cause 20 times more economic damage than Hurricane Katrina.
What the sun will do next is beyond our ability to predict. Most astronomers think that the solar cycle will go on but at low level. However, there is also evidence that the sun is losing its ability to produce sunspots. By 2015, they could be gone altogether.
1．The sun watchers feel surprised at________.
A. the longest sunspots' absence? B. the largest sunspot number
C. the malfunction of electronic devices D. the serious damage by sunspots
2．What does the underlined word “crescendo” in Paragraph 3 most probably mean?
A. small number????????????????????????B. high level
C. usual cycle????????????????????????????D. fresh start
3．We can infer that in the past two years________.
A. solar activities have brought much trouble to our life
B. the? number? of? sunspots? has? increased? to? a large extent
C. the solar minimum took the place of the solar maximum
D．our cellphones have seldom been interrupted by the solar storm
4．Which statement does the text lead you to believe?
A. Solar activities do no harm to our daily life.
B. Hurricane Katrina is also a type of solar storms.
C. It's difficult to predict sunspots.
D. From now on there're no sunspots.
【答案】ABDC

地球与太空




Passage 7

Space is where our future is — trips to the Moon, Mars and beyond. Most people would think that aside from comets(彗星) and stars, there is little else out there. But, since our space journey started we have left so much trash（垃圾）?there that scientists are now concerned that if we don't clean it up, we may all be in great danger.
The first piece of space junk was created in 1964, when the American satellite Vanguard I stopped operating and lost its connection with the ground center. However, since it kept orbiting around the Earth without any results, scientists became increasingly comfortable abandoning（抛弃）?things that no longer served any useful purpose in space.
It is said that there are now over 500,000 pieces of man-made trash orbiting the Earth at speeds of up to 17,500 miles per hour. The junk varies from tiny pieces of paint chipped off rockets to?cameras, huge fuel tanks, and even odd items like the million-dollar tool kit that astronaut Heidemarie Stefanyshyn Piper lost during a spacewalk.
The major problem with the space trash is that it may hit working satellites and damage traveling spaceship. Moreover, pieces of junk may crash with each other and break into pieces which fall back to the Earth. To avoid this, scientists have invented several ways for clearing the sky. Ground stations have been built to monitor larger pieces of space trash to prevent them from crashing into working satellites or space shuttles. Future plans include a cooperative effort among many nations to stop littering in space and to clean up the trash already there.
1. What was the first piece of man-made space trash?
A. A camera.??????????????B. A tool kit.???? C. A fuel tank.?? D. A broken satellite.
2. Why were scientists NOT concerned about space trash in the beginning?
A. It no longer served any useful purpose.????????????????????????????B. It was millions of miles away from the Earth.
C. It did not cause any problems.????????????????????????????????????????????????????????D. It was regarded as similar to comets and stars.
3. Which of the following statements is true about space junk?
A. It is huge, heavy machines.??????????????????????????????????????????????????????????????????????B. It never changes position.
C. It floats slowly around the Earth.????????????????????????????????????????????????????????D. It may cause problems for space shuttles.
4. What has been done about the space trash problem?
A, Scientists have cleaned up most of the trash.
B. Large pieces of space trash are being closely watched.
C. Many nations have worked together to stop polluting space.
D. Ground stations are built to help store the trash properly in space.

1-4 BAAD


Passage 8
?A newly discovered planet looks just right for?life as we know it, according to an international group of astronomers. Orbiting a star about 500 light-years away, the planet called Kepler-186f?is about the same size as Earth. It orbits its star at the right distance for liquid water on the surface.?That?is a necessary condition for life as we know it.
??????????????But it is not exactly like Earth, NASA planetary scientist Elisa Quintana said. “It’s more of an Earth’s cousin. It’s not an Earth’s twin. It shares the same characteristics as Earth, but their parent stars are very different,” said Quintana.
??????????????Kepler-186f?orbits a star that is smaller and cooler than our sun. But, writing in the journal Science, the astronomers say the planet appears to be a closer relative than most of the hundreds of others discovered so far. Some are massive gas-covered giants with thick, crushing atmospheres. Others orbit too close to their stars and are too hot for life.
??????????????Two planets discovered last year are in the right orbit and might be good candidates for life, Quintana says, but they are a bit bigger than Earth. “For the first time, we can actually say we now have a planet that is both Earth-sized and orbits in its star’s habitable zone,” she said.
??????????????It may be the first time, but it probably is not the last, says Massachusetts Institute of Technology astrophysicist Sara Seager. “We’ve been waiting decades to understand how common habitable planets might be, and it’s looking like they’re really common. And this gives us excitement and motivation to take the next step,” said Seager.
??????????????The next step would be to look for signs of life in the atmospheres of these distant worlds. That would take a more sophisticated (高端的；复杂的) space telescope. But budget cuts threaten that mission, says?University?ofCalifornia?at?Los Angeles?astrophysicist?Ben Zuckerman. “In principle, we could do this in the next few decades. But in practice, because there’s no money, it’s not gonna happen. It’s not gonna happen in my lifetime, for example.”
??????????????Leaving earthbound concerns behind, NASA’s Elisa Quintana believes that when the next-generation space telescope is launched, it will find that we are not alone in the universe.
1. What does the underlined word “That” (Paragraph 1) refer to?
??????????????A. The right distance.??????????????B. Liquid water.????????????????????????
????C. The right size.????????????????????????????D. A star.
2. According to Elisa Quintana, Kepler-186f?______.
??????????????A. is more of an Earth’s cousin than an Earth’s twin
??????????????B. has a lot in common with Earth, including their parent stars
??????????????C. is a lot bigger than Earth
??????????????D. is smaller and cooler than our sun
3. Ben Zuckerman and Elisa Quintana would probably agree that ______.
??????????????A. they can continue their research without worrying about money
??????????????B. it is the last time that they have discovered such a planet
??????????????C. a sophisticated space telescope plays an important role in their research
??????????????D. Earth is the only planet where we can find signs of life
4. Which of the following would be the best title for the passage?
??????????????A. Where there is water, there is life?????B. A planet exactly like Earth found
??????????????C. Life discovered on Kepler-186f????????D. New Earth-size planet found

解析BACD


Passage 9

?September 21, 2050----It was announced that the first tourist heading for Mars will be the 38-year-old US businessman Patrick Clifford. He will leave the earth in June 2052 and set his foot on the surface of Mars in November, together with the other 6 astronauts to further explore the planet.
??? Patrick has now two years of training ahead of him to get ready for the trip. Not only will he spend five months in getting to Mars, but another 600 days there before he can go back home.??Patrick was of course very excited, “ This has been my dream since I was four, and?seeing the first man on Mars 20 years ago made me realize that it was possible.”
??? To be able to pay the $ 1. 3 billion for his ticket for the trip, Patrick sold his majority stake (股份) in the company his father had built. “I know that my father would have been proud of me if he had still been alive today, he knew what this means to me”, says Patrick.?There is no possibility that you will find Patrick begging in your street when he comes back.?It is said that he was paid twice as much for his part of the?company.
??? So, how is he going to spend his 600 days on the red planet? “Well, since I don’t have a job when I get back after selling the company, I have plenty of time to come up with a new?business idea”, he says and laughs. If he brings a shovel（铁锹）he can start building the first hotel there, but maybe he shouldn’t expect too many guests until someone can offer a cheaper ticket.
1. How long will Patrick Clifford be away before he comes back?
A．About five months????????????????????????????????????????????????????????B．About two years??????????????
C．About 600 days????????????????????????????????????????????????????????D．About 750 days
2. The underlined part in Paragraph 3 means that??????????.
A．the trip will turn Patrick into a beggar
B．Patrick will get much money from the trip
C．we needn’t worry about Patrick’s economic condition
D．it’s likely that Patrick will be very poor after he comes back
3. What can be inferred from the passage?
A．Patrick is an optimistic man
B．A total of six people will go to Mars
C．Patrick’s father felt excited at the news
D．Patrick will spend all his money on the trip
解析
DCA







Passage 10
?Astronauts on shorter shuttle missions (使命) often work very long days.? Tasks are scheduled (安排) so tightly that break times are often used to finish the day’s work.? This type of schedule is far too demanding for long missions on the International Space Station (ISS).? ISS crewmembers usually live in space for at least a quarter of a year. They work five days on and two days off to mimic?the normal way they do things on Earth as much as possible. Weekends give the crew valuable time to rest and do a few hours of housework.? They can communicate with family and friends by email, internet phone and through private video conferences.
???? While astronauts cannot go to a baseball game or a movie in orbit, there are many familiar activities that they can still enjoy. Before a mission, the family and friends of each ISS crewmember put together a collection of family photos, messages, videos and reading material for the astronauts to look at when they will be floating 370 kilometers above the Earth.? During their mission, the crew also receives care packages with CDs, books, magazines, photos and letters. And as from early 2010, the internet became available on the ISS , giving astronauts the chance to do some “web surfing（冲浪）” in their personal time. Besides relaxing with these more common entertainments, astronauts can simply enjoy the experience of living in space.
???? Many astronauts say that one of the most relaxing things to do in space is to look out the window and stare at the universe and the Earth’s vast land mass and oceans.
1. What does the word “mimic” in Paragraph 1 probably mean??????????????
? A.? Find?????????? B.? Copy?????????? C. Change???????? D. Lose
2. Which of the following best describes the families of the astronauts on the ISS ?
? A. They are caring and thoughtful.????????????????????????????????????B. They are patient and annoyed.
? C. They are impatient and annoyed.???????????????????????????????????D. They are excited and curious.
3. In the final paragraph, the author shows that astronauts??????????.
? A. get more pleasure in space than on the Earth??
B. find living in space a bit boring and tiring
C. regard space life as common???????????????????????????
D. love to see the Earth from space
4. The passage mainly discusses how astronauts??????????.
? A. work for longer missions in space?????????????????????????? ????B. connect with people on the Earth
C. observe the Earth from space.???????????????????????????D. spend their free time in space
考点科普环保类阅读
解析
1--4 BADD







Passage 11
At first sight the planet Mars(火星) does not appear very welcoming to any kind of life.It has very little oxygen and water；the temperature at night is below 50 degrees and winds of 100 miles(161 kilometres) per hour cause severe dust storms. However，the surface of the planet seems to show that water flowed across it at some time in the past，and it is believed that there is enough ice at the poles to cover the planet with water if it melted，although there is no life on Mars now，some scientists think that there may have been some form of life a long time ago.At that time，the planet had active volcanoes(火山)；the atmosphere was thicker and warmer；and there was water.In fact，in some ways Mars may have been similar to Earth，where life exists.
Some people believe that Mars could support life in the future if right conditions were produced.The first step would be to warm the planet using certain gases which trap the sun’s heat in the planet’s atmosphere.With warmth，water and carbon dioxide，simple plants could begin to grow.These plants could slowly make Mars fit to live on.It is judged that the whole process might take between 100,000 and 200,000 years.In the meantime，people could begin to live on the planet in special closed environments.They would provide a lot of useful information about conditions on Mars and the problems connected with living there.
1．According to the passage，the planet Mars has no________on it.
A．wind? B．dust
C．mountains? D．animals
2．It is believed?that on Mars now________.
A．there is a large amount of ice at the poles
B．there is a thicker and warmer atmosphere
C．there are some kinds of simple plants
D．there are so many active volcanoes
3．What is the main idea of Paragraph 2?
A．Certain gases should?be used to warm Mars.
B．Plants should be grown to make Mars fit to live on.
C．Mars could support life on right conditions in the future.
D．People could live on Mars in special closed environments.
4．The most suitable title for the passage is________.
A．No Life on Mars
B．Study of Mars
C．The Possibility of Life on Mars
D．The Future Conditions on Mars

参考答案： DACC







Passage 12
It is sometimes said that strange flying objects have been seen high up in the sky. People call these strange objects Unidentified Flying Objects（UFOS）. These UFOs caused a lot of interest. Some of the reports about them are difficult to believe. Some have been explained in scientific ways. Others have never been explained. Here is an account of UFOs from a report.
Dennis Burdens, who wrote an article, tells us that he once saw a UFO himself. He was having dinner one night with a friend near?Tripoli,?Libya, and after dinner the two men walked across a yard to his room to look at some papers. Burdens noticed that the moon looked strange that night. “It wasn't the moon”, was the reply.
They watched the light and saw that it was moving. It seemed to be an object rather like a big plate. In some ways it looked like smoke with a light on it, but it wasn't smoke because it didn't change its shape. It was moving in a regular way. That is to say, it didn't go suddenly faster or more slowly, and it didn't go higher or lower. So the two men decided that there must be men in it. After that, Burdens said that he felt eyes looking at him. He was being watched in the darkness.
When it was nearer, they noticed that the bottom parts were brighter than the top. The bottom was yellow and the top red. Then the object suddenly turned away and left?Libya, moving very fast.
On a later day Burdens talked to other people about it, and he found some who had seen it. They all described it in the same way. Could they all be mistaken?
?
1. UFOs are _____.
A. flying high up in the sky????????????????B. strange flying objects
C. difficult to believe?????????????????????????D. very interested
2. The UFO moved _____.
A. regularly?????????????? ?B. in a changeable way?????????? ??C. slowly??????????? ??D. fast
3. The UFO looked like _____.
A. smoke???????????????????B. a large plate?????????????????????????C. light????????? ???????D. a jumping object
4. The UFO was seen _____.
A. by Burdens and his friend
B. brighter in the darkness
C. by several people
D. to have a yellow bottom and a red top in the same way
参考答案;BABC