Tide is the regular rise and fall of the ocean level caused by the movement of the sun， the earth and the moon． It is considered a promising source of green energy to produce electricity in coastal areas．
To make use of tidal energy， we need to build tidal power stations． The bays and the river mouths where the tide is high（the tidal range is more than 10 metres） are usually perfect sites to build tidal power stations． There are many such places in the world． According to the IRENA （ the International Renewable Energy Agency）， by just using 2% of our coastlines， we can produce 4，383TWh of ocean power each year， enough to meet 16.4% of the world's electricity needs．
To build a tidal power station， we need to build a dam． In the dam are many turbines and on each turbine there is an electric generator'． When the tide rises，water comes through the dam，the turbines turn and the electric generators work， producing electricity．When the tide falls，water goes out through the dam， the turbines turn again．The electric generators continue to work．
Tidal energy has its advantages．Using tidal energy to produce electricity is much cheaper than using the traditional energy， like coal or gas． For example， the Rance Tidal Power Station in France has been there for over 50 years， producing around 5.000.000TWh of electricity each year． The cost is only 1.3 cents/TWh．
Tidal energy can be used nearly 24 hours a day． As long as the sun， the earth and the moon exist，we can use it to produce electricity． But without sunshine， there is no solar energy． When there is no wind，electric generators will not work． In addition， with the development of modern technology， tidal energy can be stored and used to produce electricity continuously．
However， we still have some problems to solve． It is difficult to build a dam in the sea， and the cost is very high．Moreover it's expensive to keep a tidal power station in its best condition．Scientists are working on them．
（1）A tidal power station is best built ．
A．at a river mouth with wind
B． along the coast with waves
C． In a bay with tide high enough
D．in coastal areas with sunshine
（2）The underlined word "turbine" in Paragraph Three is a machine to ．
A． make the tide rise and fall
B． make an electric generator work
C． let water go through the dam
D．keep the dam in good condition
（3）What advantage does tidal energy have？
A． We can use it to get useful tide．
B． It can improve the ocean environment．
C． We can use it nearly all the time．
D． It meets 16． 4% of the electricity needs．
（4）How can we make better use of tidal energy？
A． By digging more bays and river mouths．
B． By building cheaper tidal power stations．
C． By closing traditional electric power plants．
D． By using tidal energy to replace other energy．
What are you going to do if you are in a burning house? How will you escape? Do you know how to save yourself? Please read the following passage．
Escaping a fire is a serious matter．Knowing what to do during a fire can save your life．It is important to know the ways you can use and show them to everyone in the family，such as stairways and fire escapes，but not lifts．
From the lower floors of the buildings，escaping through windows is possible，learn the best way of leaving by windows with the least chance of serious injury．
The second floor window is usually not very high from the ground．An average（平均高度的）person，hanging by the finger-tips will have a drop of about six feet to the ground．It is about the height of an average man．Of course，it is safer to jump a short way than to stay in a burning building．
Windows are also useful when you are waiting for help．Be sure to keep the door closed．Or smoke and fire may be drawn into the room．Keep your head low at the window to be sure you get fresh air rather than smoke that may leaked（渗）into the room．
On a second or third floor，the best windows for escaping are those that open onto a roof．From the roof a person can drop to the ground more safely．Dropping onto cement（水泥）might end in injury．Bushes（灌木丛）and grass can help to break a fall． It is important to _______．
| A．put out the fire in the burning house | B．know the ways to escape the fire |
| C．jump off a burning house | D．keep the door closed |
It is possible to escape through the windows _______．
| A．if there are some bushes on the ground | B．if you are strong enough |
| C．if you live on a lower floor | D．If you have a long rope |
Which of the following escaping way is NOT right? _______．
| A．You can escape through stairways． |
| B．You can choose fire escapes． |
| C．Escape from the windows that open onto a roof． |
| D．Use a lift to come down at once． |
Open the window so that _______ if the building is on fire．
| A．you can get fresh air | B．you can call for help |
| C．you can easily jump off | D．you can be seen first |
The best title of the passage is _______．
| A．Escaping from the Windows | B．Save Yourself in the Burning House |
| C．Knowledge on Fire | D．Waiting for Help |
 |
There are four parts in IELTS: listening, speaking, reading and writing. Listening is very important. Are you confident? Have you made good preparation? The book IELTS Listening is helpful for your preparation for IELTS. |
 |
Car and Driver is the world’s most popular automotive magazine. It provides information and entertainment for people who like cars. It offers the best vehicle tests in the business. The magazine also covers the latest developments in car technology. |
 |
Once you own the book, you will become a good speaker. Susan Weinschenk’s excellent ideas on how to make a perfect speech are very helpful to you. With the help of the book, you will be confident to know how to give your speech. Also, you will learn how to attract your audience during the speech. |
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The book offers healthy and delicious food. These dishes can all be completed in less than half an hour, and in many cases, in just a few minutes. Sisson and Meier show you how to delight your family or guests every time with quick, delicious meals using local materials, meats, healthy fats (yes, and real butter) and common herbs and spices. |
Which of the following will help to improve your speech?
| A．IELTS Listening . | B．Car and Driver. |
| C．Quick & Easy Meals. | D．Designing Effective Speech Interfaces. |
Who will probably be interested in Quick & Easy Meals?
| A．Car fans. | B．English speakers. |
| C．Housewives. | D．Businessmen. |
How many of the four short passages are introductions of magazines?
| A．One. | B．Two. | C．Three. | D．Four. |
Living on an island might sound wonderful． But what if you left for a trip and found you could never return？ What if your home， and even the land it stood on， was gone forever？For people living in the Pacific Islands，this is really possible．
Why？ Climate（气候） change． Climate change is causing the sea to rise． That's bad news for the Pacific Islands． Young people on the islands are even starting to wonder：Will they be the last generation（一代人）？
Not if the islanders have anything to do about it．These people are deeply connected to their homelands． The Pacific Islands are made up of 11 different countries： the Marshall Islands， Fiji， Samoa，and others． But now， those countries are working together． They're joining forces to fight climate change．
Why is climate change such a huge threat to this part of the world？Islands have low elevations（海拔）．So they are among the first places influenced by rising sea levels． That's why countries of the Pacific Islands are working together to do their part．
But these are small countries． When it comes to climate change， can they make a big difference？ They can， because most of the things that people on islands buy are brought by ships．This is very harmful to the environment． After all， ships put out almost 3 percent of the world's carbon emissions（碳排放）．That makes climate change worse．
Pacific Islanders realize the problem． So， in 2019，six countries got together：Fiji，the Marshall Islands， Samoa，Vanuatu， the Solomon Islands， and Tuvalu． They came up with a plan． They agreed to cut carbon emissions from shipping by 40 percent by 2030．And by 2050，they expect zero﹣carbon shipping．
How will they pull this off？ They plan to use some really cool carbon﹣free technologies．They'll make use of solar and wind energy．
Sea levels are rising， but hopes aren't sinking in the Pacific Islands．
（1）What is the bad news for the Pacific Islands according to the passage？
A． Some Pacific Island countries have disappeared．
B． The sea level is going up because of climate change．
C． All the sipping to the Pacific Islands has been stopped．
D． The Pacific Islands have nothing to do about the climate change．
（2）The underlined word "threat" in Paragraph 4 probably means" "．
A． risk
B． step
C． project
D． development
（3）It can be inferred from the passage that ．
A． there will never be zero carbon emissions from sipping
B． solar and wind energy will make climate change worse
C． all the Pacific Islanders may leave their homelands by 2050
D． some Pacific Island countries may have hopes to make a difference
（4）The passage mainly talks about ．
A． why other countries are helping the Pacific Islanders fight climate change
B． how some countries are working hard to develop carbon﹣free technologies
C． how Pacific Island countries are working together to fight shipping pollution
D． why Pacific Island countries put out so much of the world's carbon emissions
Scientists are placing robotic dogs in the homes of lonely old people to test whether they can improve the quality of life for humans. Alan Beck, an expert(专家) in human-animal relationship, and Nancy Edwards, a professor of nursing, are leading the animal-assisted study on the effect of robotic dogs on old people’s depression (沮丧) , physical activity, and life satisfaction.
In the study, the robot, called AIBO, is placed for six weeks in the houses of some old people who live alone. Before placing AIBO in the home, scientists will collect baseline data(数据) for six weeks. These old people will keep a diary to note their feelings and activity before and after AIBO. Then, the scientists will review the data to test if it has produced any changes in the life of its owner.
“I talk to him all the time, and he responds to my voice,” says a seventy-year-old lady. “When I’m watching TV, he’ll stay in my arms until he wants down. He has his own mind.”
The AIBOs respond to certain orders. The scientists say they have some advantages over live dogs, especially for old people. Often the elderly are disabled and cannot care for an animal by walking it or playing with it. A robotic dog removes exercise and feeding concerns.
“At the beginning, it was believed that no one would relate(与……相关) to the robotic dog, because it was metal and not furry.” Beck says. “Hopefully, down the road, these robotic pets could become a more-valuable health helper. They will record their masters’ blood pressure, oxygen levels or heart rhythms(心律). AIBOs may even one day have games that can help stimulate(刺激) older people’s minds.”The purpose of Beck and Edwards’ study is to _____________.
| A．understand human-animal relationship |
| B．make lonely old people’s life better |
| C．find the causes of old people’s loneliness |
| D．improve the animal-assisted research |
In the research, the old people are asked to _____________.
| A．note the activities of AIBOs |
| B．keep AIBOs at home for 12 weeks |
| C．record their feelings and activity |
| D．study the collected information |
What does the underlined word “removes” mean?
| A．moves again | B．is movable | C．doesn’t need | D．need |
What is the better point of AIBO than live dogs?
| A．It is easier to keep at home. |
| B．It can help the disabled people. |
| C．It responds to all the human orders. |
| D．It can watch TV with its owner. |
The writer seems to suggest that the future robotic dogs may__________.
| A．cure certain diseases | B．keep old people active |
| C．change people’s ideas | D．look more like real dogs |
Recycling has become more and more important． As time goes by， it is rapidly changing around the world．（1） ．
More goods will be made of reused materials．You'll find more clothing，toys，park benches that are made of recycled water bottles．Buildings and furniture are made of renewable wood and steel．（2） ．
Consumers（消费者） will become cleverer． Shoppers will turn to companies that produce green products．（3） ． They want to know how the materials come from， how food is grown and so on．
Less plastic packaging（包装）． We find it difficult to open a bottle of pills or a new toy and it's a waste of resources． Don't use plastic bags when we go shopping．（4） ． Everyone should be a greener person though it will probably take longer for all plastics to disappear．
Actions speak louder than words （5） ． Companies should make efforts to reduce materials for packaging as well． The government will take measures to change the situation． In the next ten years，we'll still have a long way to go．
| A． Do you pick up plastics every day？ B． We should take a cloth bag instead． C． Everyone should use reusable products． D． What will recycling be like in ten years？ E． Waste is finally treated as a material． F． These consumers care a lot about the environment． |
In 1620, about half the USA was covered by forests. Today the forests have almost gone. A lot of good land has gone with them, leaving only sand. China doesn’t want to copy the USA’s example. We’re planting more and more trees. We’ve built the " Great Green Wall" of trees across northern part of our country. The Great Green Wall is 7,000 kilometres long, and between 400 and 1,700 kilometres wide. It will stop the wind from blowing the earth away. It will stop the sand from moving towards the rich farmland in the south. More "Great Green Walls" are needed. Trees must be grown all over the world. Great Green Walls will make the world better.
根据短文内容，选择正确答案。The Great Green Wall in China is ______.
| A．7,000 kilometers long | B．1,700 kilometers long |
| C．7,000 meters long | D．400 kilometers long |
Trees must be grown in ______.
| A．China | B．the USA | C．some countries | D．every part of the world |
Which of the following statements is not true?
| A．The Great Green Wall will stop wind from blowing the earth away. |
| B．The Great Green Wall will make our life better. |
| C．We don’t need to plant more trees. |
| D．The Great Green Wall will stop the sand moving towards the rich farmland. |
Do you know about Psephurus gladius？ It's a Chinese paddlefish known as "king of all national freshwater fish"． However， it is announced that the Chinese paddlefish living in the Yangtze River has become extinct （灭绝的）．
A paper from Science of the Total Environment shows that the largest freshwater fish in China might have gone extinct between 2005 and 2010． Wei Qiwei， author of the paper， said in September， 2019， some experts supposed that the first﹣class protected fish had been extinct already．
The Chinese paddlefish was about 2 to 3 meters long and could grow longer than 7 meters．The fish had lived on the earth for 15 million years． The latest discovery of the fish was made in 03． Scientists helped the fish to return and tried to track （追踪） it． Unluckily， a boat accident
caused the tracking efforts to fail． Since then， no discovery has been reported and no such fish has been kept in captivity （圈养）．
"The Chinese paddlefish was so big that it was hard to raise in captivity，" Wei said．Between 1984 and 1993， he once tried to save four fish， but only one stayed alive and returned to the river．
The extinction of the fish has called public attention as people expressed sadness over the death，hoping such animals would be better protected so that future generations could see them．From Jan 1， 2020， China began a l0﹣year fishing ban （禁令） on important areas of the Yangtze River to protect Biodiversity （生态多样性） in China's longest river．
（1）It can be learned from the passage that ．
A． the Chinese paddlefish was hunted too much in the past
B． the Chinese paddlefish was the largest freshwater fish in the world
C． the Chinese paddlefish could grow to be over 7 meters in length
D． the Chinese paddlefish has never been seen so far
（2）What happened after the boat accident mentioned in Paragraph 3？
A． Some scientists saved the fish．
B． People failed to track the fish．
C． The fish lost its life．
D． The fish was kept in captivity．
（3）Why couldn't the Chinese paddlefish be raised in captivity？
A． Because of its living habits．
B． Because of its large size．
C． Because of its special diet．
D． Because of the high cost．
（4）What's the writer's purpose in writing the passage？
A． To show people 's sadness about the fish's death．
B． To explain how the fish died out．
C． To call on people to protect animals．
D． To introduce a first﹣class protected fish．
Maybe you should sit down before you read this． It's a little frightening． Your sitting may be killing you．
Health experts say the U．S． adult now sits about 6.5 hours a day. That is up about an hour a day compared to 2007． The news is even worse for teens． They sit eight hours each day．The information was put out by the National Center for Health Statistics．It has collected the numbers for the past 16 years．It is worried about what it has found．
Research shows that people who are not active can get sick． Their bones get weaker． They burn fewer calories （卡路里）． That makes them more likely to put on too much weight． They might even get diabetes （糖尿病）． They are at risk for high blood pressure and heart problems， too．
Some experts also think sitting too much can influence how your blood moves through your body and how well your body fights off illness． Being active helps in lots of ways． It can make you happier， burn more calories and give you more energy． It can also help you sleep better．
About 60% of people in the U．S． watch at least two hours of TV each day． That number has stayed about the same in recent years．
Computers are the biggest reason for more hours spent sitting． Computer use outside of work or school has gone up for all age groups． Now， 50% of adults spend at least an hour of their free time on a computer each day． That is up from 29% in 2003．
About 53% of teens now spend at least an hour of free time on computers． So do 56% of kids． As many as 1 in 4 people who use computers use one for three hours or more outside of work and school．
So get up， take some breaks and go outside． You might save your life by doing outdoor
activities．
（1）The text is especially helpful for those who care about ．
| A． |
their body shape |
| B． |
their home comforts |
| C． |
their health |
| D． |
their food |
（2）Being active can help people ．
| A． |
burn more calories |
| B． |
forget their pressure |
| C． |
get sick |
| D． |
treat heart problems |
（3）What is the text mainly about？
| A． |
Computers are causing health problems． |
| B． |
Too much sitting is influencing our health． |
| C． |
Being more active is good for you and me． |
| D． |
Sitting means killing． |
（4）Which one of the following is most probably to be discussed next？
| A． |
The cause of diabetes． |
| B． |
Introduce some outdoor activities． |
| C． |
Give some examples of losing weight successfully |
| D． |
List some disadvantages of playing computer games． |
Dear Earthmen(地球人)，
I enjoy my stay on your interesting planet(星球).
I think I know the life on Earth now and I would like to tell you my ideas.
First of all you live in boxes. Every morning you leave your boxes and get into smaller boxes on wheels(轮子). All these small boxes run around and around, and finally stop to rest. You leave these boxes on wheels and go to very large tall boxes.
After resting all day, you get back in your little boxes. There you sit and look at very small glowing boxes with moving pictures in them.
There is only one thing I don’t know. Some angry boys fought for a little round (圆的) ball. Everyone shouted(大声喊) but they kept fighting. They were angry, because they had to stay in boxes all day, I think.
Thank you for this chance(机会) to get to know you.
Yours,
The man from Mars(火星)How many kinds of “boxes” does the man from Mars tell us？
| A．Two | B．Three | C．Four | D．Five |
What do the boxes on wheels refer to(指的是)?
| A．Houses | B．Buildings | C．Cars | D．TVs |
What does the word “glowing” mean in Chinese?
| A．发光的 | B．开心的 | C．漂亮的 | D．黑暗的 |
What’s the main(主要的) idea of the letter？
| A．To say goodbye to the Earthmen |
| B．To tell the Earthmen what the Earth is like. |
| C．To tell the Earthmen he doesn’t like the Earth. |
| D．To tell the Earthmen he is leaving the Earth soon. |
Scientists are very interested in the Universe，and they always want to know more about it. Years ago they knew many things about the moon. They knew how big it is and how far away it is from the earth. But they wanted to know more about it. They thought the best way was to send men to the moon. The moon is about 384,000 kilometers away from the earth. A plane cannot fly to the moon because the air reaches only 240 kilometers away from the earth. But something can fly even when there is no air. That is a rocket(火箭)
How does a rocket fly? There is gas（气体） in the rocket. When the gas is made very hot inside the rocket, it will rush out of the end of the rocket, so it can make the rocket fly up into the sky. Rockets can fly out into space. Rockets with men in them have been to the moon. Several rockets without men in them have flown to another planet(行星) much farther away than the moon. One day, rockets may be able to go to any place in space.Scientists knew ____________ the moon is.
A: how far B: how big C: how old D: both A and BThe earth is about 384,000 kilometers away from the _____.
A: space B: universe C: sun D: moonA plane cannot fly to the moon because ___________
A: there is no air above 240 kilometers away from the earth.
B: there is no gas in the plane
C: the plane is not strong enough
D: the plane can not fly a long wayThe hot gas in the rocket is used for___________
A: keeping the air in the rocket fresh(新鲜的)
B: Keeping the men in the rocket warm
C: making the rocket fly up.
D: cooking food for the menWhat is the writer’s attitude(态度) to the universe’s future.
A: Realistic(现实的) B: Imaginative(幻想的)
C: Confident(有信心的) D: Sad
Governments around the world are pushing for an end to plastic straws （吸管） and bags.More and more businesses are turning to paper products as a choice.Paper is considered by many to be better than plastic.However，it，too，is harmful to the environment.
Firstly，paper bags and straws are made from trees.Trees，as you know，can reduce （减少） carbon dioxide （二氧化碳） levels in the atmosphere. Theycan slow down climate （气候） change.An increase in the use of paper bags can cause more acts of cutting down trees.
Secondly，products made from paper require more energy and water.About 10 percent more energy and four times as much water is used to produce a paper bag than a plastic one.You might say that we can use recycled paper to save that energy and water.This seems to be a good idea.However，it takes even more energy and water to go through the recycling process than to make a brand new paper bag.Products made from recycled paper are also often short﹣lived.
Thirdly，paper products are heavier than plastic ones.That means they require more oil to transport.Seven trucks are needed to transport two million paper bags，while only one truck is needed to transport the same number of plastic bags.The increased weight also leads to a large amount of waste once the bags are thrown away.
Paper products are actually a lose﹣lose for both the environment and businesses.They are more expensive than plastic products.A paper straw costs about 5 to 12 cents，while a plastic one usually costs only about 2 cents.
The most environment﹣friendly solution is to avoid single﹣use products altogether.Products like glass water bottles and steel straws can be used over and over again.They are much better than either paper products or plastic products.Through increasing the use of these products，you can greatly reduce your throwaway waste and truly make our Earth a greener place!
（1）What does the underlined word " They" in Paragraph 2 refer to？
| A． |
Plastic products. |
| B． |
Trees. |
| C． |
Paper products. |
| D． |
Businesses. |
（2）Compared with transporting two million plastic bags，transporting two million paper bags requires .
| A． |
fewer trucks |
| B． |
six more trucks |
| C． |
twice as many trucks |
| D． |
the same number of trucks |
（3）The writer compared the price of a paper straw and that of a plastic straw to show that .
| A． |
paper products are not a good choice for businesses |
| B． |
it is difficult for all businesses to turn to paper products |
| C． |
most people believe paper products are better than plastic ones |
| D． |
paper products are as harmful to the environment as plastic ones |
（4）By writing this article，the writer mainly wanted to .
①compare plastic products with paper ones
②correct people's wrong ideas about paper products
③suggest people use reusable products like steel straws
④list the advantages and disadvantages of using paper products
| A． |
①② |
| B． |
③④ |
| C． |
①④ |
| D． |
②③ |
Maybe a lot of thin people will be worried about their health if the inside fat matters．
Some doctors now think that the inside fat around important organslike the heart or liver could be as dangerous as the outside fat which can be noticed more easily．
"Being thin doesn' t surely mean you are not fat，"said Dr Jimmy Bell at Imperial College．Since 1994，Bell and his team have tested nearly 800people with MRI to create "fat maps" showing where people store fat．
According to the result，people who keep their weight through the food they usually eat rather than exercise are likely to have major deposits （堆积物） of inside fat，even if they are thin．
Even people with normal Body Mass Index （体重指数） scores can have surprising levels of fat deposits inside．Of the women，as many as 45percent of those with normal BMI scores （20to 25）actually had too high levels of inside fat．Men were nearly 60percent．
According to Bell，people who are fat on the inside are actually on the edge of being fat．They eat too many fatty and sugary foods，but they are not eating enough to be fat．Scientists believe we naturally store fat around the stomach first，but at some point，the body may start storing it elsewhere．
Doctors are unsure about the exact dangers of inside fat，but some think it has something to do with heart disease and diabetes （糖尿病）．They want to prove that inside fat does harm to the body' s communication systems．
The good news is that inside fat can be easily burned off through exercise or even by improving your eating habits．"If you want to be healthy，there is no other way．Exercise has to be an important part of your lifestyle，"Bell said．
（1）What is this piece of news mainly about？
| A． |
Thin people may be fat inside． |
| B． |
How to deal with inside fat． |
| C． |
Inside fat leads to many diseases． |
| D． |
Thin people also have troubles． |
（2）What does the underlined word " organs"in the second paragraph mean？
| A． |
地位 |
| B． |
地方 |
| C． |
器官 |
| D． |
肝脏 |
（3）Doctors have found ．
| A． |
the exact dangers of inside fat |
| B． |
being thin doesn' t mean you are not fat inside |
| C． |
being thin is not dangerous at all |
| D． |
inside fat is the cause of heart disease and diabetes |
（4）According to the passage，which of the following is wrong？
| A． |
Exercise can help to reduce the inside fat． |
| B． |
People can reduce inside fat by improving their eating habits． |
| C． |
Women have more chances to have too much inside fat． |
| D． |
Not all the people who look thin are really thin inside． |
（5）From the last paragraph，we can find that ．
| A． |
it is true that inside fat can lead to disease |
| B． |
exercise plays an important role in people' s life for keeping healthy |
| C． |
thin people usually have inside fat even if they are thin |
| D． |
it is easier to burn off inside fat than outside fat |
One fresh sunny day， while I was swimming in the water， I felt something special going through my gills （鳃）． It was a different kind of water． I also found many of my friends became sick． Some of them were dying． I began to worry because I didn't want to get sick or die． （A） I also considered what I should do to save my friends． So I decided to do some research for my underwater life．
My research started． At first， I noticed there were many bottles， plastic bags and other kinds of rubbish in the water． Then I went on…I got closer and noticed a man pouring something polluted into the water． It flowed everywhere． Other people saw him do this and they followed him． （B） I found that it ____ ____ （闻起来奇怪）． Then I tasted it． It made me feel terrible． I hated it! I really wanted to tell them that it was killing us! But I couldn't．
I think it is so stupid of people to do bad things to the earth that they are living on! I can't understand why they are doing these People should care about the environment． If they do that， we will not have anything to worry about． I suggest they take my advice． If so， （C） 我相信每一个人将过上幸福的生活．
任务一 请写出（A）处句子的同义句．
（1）I also considered save my friends．
任务二 请在（B）处横线上根据汉语提示填入恰当的词．
（2）I found that it （闻起来奇怪）．
任务三 请将（C）处划线句子翻译成英语．
（3）
任务四 请简略回答下列问题．
（4）What does "I" refer to （指代） in the passage？
（5）What should people do according to the passage？ （答案不超过五个单词）
When you think of the Arctic （北极）， you imagine an icy land of pure white snow． Others imagine it as the last really clean place left on earth． We have polluted the deepest oceans with plastic rubbish． "And now"， CNN says， "It's the Arctic's turn．"
German scientists have recently found microplastics in Arctic snow． Microplastics are pieces of plastic smaller than 5 millimeters． Sadly， the scientists found 1800 pieces of microplastics per liter of （每升） snow．
How is plastic pollution reaching the Arctic？ According to scientists， "It's clear that most of the microplastics in the snow come from the air．" They fall off the plastic objects and are moved by the wind， just like dust． They mix with ice in the air and fall to the ground as snow． Finding these plastics in Arctic snow means that we may breathe them in．
Are they bad for us？ Scientists cannot answer this question for now， according to the WHO． We do know that our bodies cannot take in "large" pieces of microplastics． However， if the plastics are small enough， they can find ways into our bodies and stay there for a long time， which can be bad for our health． What's more， earlier studies have shown that microplastics may contribute to lung cancer risk．
Microplastics have also been found in rivers and oceans around the world． Earlier research has found that they flow over long distances and into our oceans， hurting ecosystems along the way． They start in our wastewater， then flow into rivers and out to the sea， where they are eaten by sea animals． If people then eat these animals， it means that we're eating the plastic as well．
（1）We can learn from Paragraph 1 that ．
A． the Arctic is the last really clean place left on earth
B． the Arctic is an icy land of pure white snow
C． the Arctic is a beautiful icy land with clean air
D． the Arctic has been polluted by plastic rubbish
（2）The underlined word "contribute" means " " in Chinese．
A． 增加
B． 捐献
C． 造成
D． 是……原因之一
（3）Where do most of the microplastics in the snow come from？
A． From water．
B． From air．
C． From wind．
D． From food．
（4）Which of the following isn't true？
A． We may breathe microplastics in Arctic．
B． Microplastics may cause lung cancer．
C． We don't have to mind microplastics right now．
D． Microplastics have hurt ecosystems．
（5）How does the writer end this passage？
A． By advising us to drink clean water．
B． By asking people not to eat sea animals．
C． By telling the seriousness of plastic pollution．
D． By showing the beauty of Arctic．
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