My grandma was getting older and she had a hard time walking． One day，a doctor advised her to try Tai Chi．
"Tai Chi？" asked my grandma． "Is that a kind of medicine？"
The doctor laughed and replied， " No， it isn't． Tai Chi is a kind of exercise． It is very slow and not difficult to learn． Most importantly， it's very good for your health． "
At first， my grandma didn't want to try it． She said， "I don't feel like exercising． " To help my grandma， our whole family decided to give it a try． We went with my grandma to a Tai Chi class．
Well， it seemed very easy． However， after I tried it， I found it was not easy at all． Even my elder brother Jimmy，the best football player in his school， fell a few times when he was trying to do the action． But my grandma fell in love with Tai Chi at once．
Guess what! Now she goes to the classes three times a week． Although she is almost eighty years old， she doesn't have difficulty walking anymore．
（1）Who advised the grandma to try Tai Chi？
| A． |
The writer． |
| B． |
A doctor． |
| C． |
The writer's parents． |
| D． |
Jimmy． |
（2）At first， what did the grandma think Tai Chi was？
| A． |
A kind of sport． |
| B． |
A kind of food． |
| C． |
A kind of medicine． |
| D． |
A kind of drink． |
（3）How often does the grandma go to Tai Chi classes？
| A． |
Once a month． |
| B． |
Twice a week． |
| C． |
Twice a month． |
| D． |
Three times a week． |
（4）Which of the following is TRUE？
| A． |
The writer is older than Jimmy． |
| B． |
The grandma doesn't like Tai Chi． |
| C． |
The writer found Tai Chi was very hard to learn． |
| D． |
The grandma still has trouble walking now． |
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．
In China， each year we produce about 150 million tons of city waste according to report．Where does the waste go？ People usually burn or bury（埋）it．On the other hand， we receive waste from some developed countries． We get useful materials from it．What about the useless part？ Still burned or buried．But is it a proper way？
Waste pollutes the environment， harms people's health and causes animals to die．It also gets in the way of green and sustainabledevelopment． We can't make money at the cost of the environment．We should leave clean water and green mountains to our next generations （一代人）．
China is getting really serious about waste now．
We are taking less waste from developed counties．From January 2018，China started to stop 24 kinds of waste coming into our country．And more laws and rules about dealing with waste have been made．Anyone who breaks the law will be punished．
China also tries to put waste into good use． One example is the waste electricity factories． They burn waste to make electricity in a green way， No harmful gases or water will get into the environment．
The Chinese government is encouraging people to do waste sorting （分类）． Cities like Shanghai，Chongqing and Beijing have their own storing systems．More will join then soon．As President Xi Jinping said during a visit to Shanghai，waste sorting is a new fashion （时尚）．More and more people are forming the habit of separating their waste．
（1）The writer starts the passage by ．
| A． |
telling stories |
| B． |
comparing numbers |
| C． |
raising questions |
| D． |
giving suggestions |
（2）The underlined word "sustainable" in Paragraph 2 means" " in Chinese．
| A． |
可享受的 |
| B． |
可持续的 |
| C． |
可借鉴的 |
| D． |
可复活的 |
（3）From the passage，we know that ．
| A． |
waste does harm only to the environment |
| B． |
those who break the law may not be punished |
| C． |
China stops getting waste from developed counties |
| D． |
waste sorting starts to become popular in China |
（4）The structure of the passage may be ．
（①＝Paragraph 1 ②＝Paragraph 2 ③＝Paragraph 3 ④＝Paragraph 4 ⑤＝Paragraph 5 ⑥＝Paragraph 6）
阅读材料，给有关运动的段落选择合适的标题．
（1） Whenever I move to a new city to study or work， I look for exercise classes． You meet like﹣minded people， you can support each other during a difficult exercise and you all share a collective （集体的） feeling of excitement when the class finishes．
（2） Every day， the 20 minutes on the treadmill （ 踏车）gets easier， the weights feel lighter and you feel a great sense of achievement． It might not be easy， but you would be fit and strong． It's a great feeling challenging yourself． Also it's a result of your hard work．
（3） When you exercise， your body produces endorphins （内啡肽）． It will give you a rush of excitement and happiness． You will feel better after exercise． Next time you're having a bad day， try going for a run， and then the day won't seem so bad after all．
（4） We all know the effects of exercise on our mind． Exercise might give you a feeling of confidence （信心） from being comfortable with your body and appearance． This new confidence might even help in your life．
（5） Focusing on exercise can help you forget the problems and stress of daily life， study or work． During exams， I always spend an hour a day in the gym． It makes me feel less anxious and it also helps me to sleep those important eight hours the night before a big exam．
A． Exercise cheers you up．
B． Exercise helps you get along well with people.
C． Exercise makes you believe in yourself.
D． Exercise helps you lower stress.
E． Exercise makes you feel strong， fit and healthy.
Scientists in Britain and the United States have made a new kind of enzyme（酵素）that eats plastics（塑料）． With its help， plastics can be turned into smaller parts and go away quickly． Scientists believe that， in the future， it could solve the problem of plastic pollution．
The enzyme is able to break downPET， a form of plastic． PET was first made in the 1940s and is now widely used to make plastic bottles． It can remain in the environment for many years and pollute large areas of land and water． So it has always been a headache to deal with the waste from PET and other plastics．
The researchers made the discovery（发现）while examining the structure of a natural enzyme in Japan． They found that the natural enzyme was helping to break down PET plastics． So， they decided to make small changes to the enzyme by adding some amino acids（氨基酸）． It made the natural enzyme's plastic﹣eating abilities work faster and better．
John McGeehan， one of the lead researchers， said， "We've made an improved enzyme． It's better
than he natural one． And we are trying to make more improvements to it． "He went on， "The enzyme is not harmful to humans or animals， and it is friendly to the environment． So we are considering putting it into wider use．"
The team is now trying to make the enzyme break down PET in large quantities（大量地）．"We'll see that the plastic pollution may be stopped with this technology． However， there is still a long way to go，"John McGeehan added．
（1）According to the scientists， the enzyme may solve the problem of pollution．
| A． |
air |
| B． |
water |
| C． |
light |
| D． |
plastic |
（2）The underlined phrase "break down" in the passage probably means " " in Chinese．
| A． |
实验 |
| B． |
生产 |
| C． |
发明 |
| D． |
分解 |
（3）Researchers discovered that a natural enzyme helped eat plastics ．
| A． |
in Britain |
| B． |
in the US |
| C． |
in Japan |
| D． |
in China |
（4）Which of the following is TRUE according to the passage ？
| A． |
The scientists are still trying to improve the enzyme． |
| B． |
The enzyme will pollute large areas of land and water． |
| C． |
The natural enzyme works better than the improved one． |
| D． |
The natural enzyme is harmful to humans and animals． |
阅读下面材料，然后从各题所给的四个选项中选出一个最佳答案．
Fresh green grass． Hundreds of colorful wild flowers． Water running into little pools． Birds making their homes in boxes． The 9， 500﹣square﹣metre Augustenborg Botanical Garden may look just like any other well﹣organized park but there's a difference． It lies on the roofs（屋顶） of industria land office buildings in the city of Malmo in Sweden．
Green roofs are not a new invention． And now they are getting popular again． The common roofs of a modern city have endless black surfaces with no life or water． Perhaps that's why a garden on a roof becomes such a perfect choice for more and more people．
Green roofs are not just pretty． They also help to moderate the city temperature． The high temperatures on common roofs in the summer can make top floor flats uncomfortably hot． What is more， they play a part in making the cities hotter than the countryside around them， causing the "urban heat﹣island effect"． On a green roof， however， with its plants and water， temperatures change only a little， as they do in a park． This can greatly cut the costs of heating and cooling in the building below．
Also， a green roof takes in rain water， and protects the city drainage（排水） system．_____ And small animals and birds can make their homes on it． Thanks to this， the city may become part of nature， rather than something completely separate from it．
While the cost of building such a roof can still be higher， it can be cheaper in the long term as a result of energy savings． And wouldn't it be wonderful to be able to walk out into a garden high above the city's noise and traffic， whether you're at school or in an office or just at home in a ten﹣floor block．
（1）With the example of Augustenborg Botanical Garden， the writer wants to explain ．
A． how wildlife is protected
B． what a green roof is like
C． how to organize a good park
D． what to do with a spare roof
（2）The underlined word " moderate" in Paragraph 3 is the closest in meaning to " "．
A． raise
B． check
C． record
D． control
（3）Which of the following is the best sentence to fill in the blank in Paragraph 4？
A． A green roof is alive．
B． A green roof stops pollution．
C． A common roof is noisy．
D． A common roof increases the cost．
（4）The purpose of the passage is to ．
A． discover the problems with green roofs
B． introduce the change of green roofs
C． show the amazing beauty of green roofs
D． describe the advantages of green roofs
"Early to bed and early to rise make a man healthy，wealthy and wise．"This is an old English saying．It means that when we go to bed early，we can get up early the next morning．Then we will become healthy．We will also become rich and clever．
This is true．To be healthy，we must have enough sleep．Experts（专家） say that adults should get seven to eight hours of sleep a night．Teenagers need nine to ten hours．And school﹣aged children may need more than ten hours of sleep．Children who do not have enough sleep can't do their work very well．They won't be wise and they may not become wealthy!
We also need exercise．Walking，running，swimming and playing games are all exercise．Exercise keeps us strong．It also helps the blood to move around the body．This is very important．Our blood takes the nutrition（营养） from food to all parts of our body．
The head also needs blood．So exercise that moves the blood to our head helps us think better!
（1）If we get up early and go to bed early，we'll ．
| A． |
become weak |
| B． |
have more time |
| C． |
be healthy |
| D． |
have more work to do |
（2）Who needs most hours of sleep to keep healthy？
| A． |
Adults |
| B． |
Teenagers |
| C． |
Experts |
| D． |
School﹣aged children |
（3）A child when he does not have enough sleep．
| A． |
can't study well |
| B． |
will be wise |
| C． |
will be wealthy |
| D． |
will be active in class |
（4）A person needs exercise because ．
| A． |
he is strong enough |
| B． |
it helps make him healthy |
| C． |
he has a lot of homework to do |
| D． |
It can bring him much blood |
（5）Which of the following is Not TRUE？
| A． |
Exercise helps the blood to move． |
| B． |
Exercise is good for a person's head． |
| C． |
If we have enough blood，we'll be wise． |
| D． |
It's good for us to get up early and go to bed early． |
According to the finding of a new UN report，the world wastes about one sixth of the food each year.That's about 1，030，000，000 tons，or 121 kilograms for each person on the Earth.
61% of the food waste is from home cooking.Food services，such as restaurants，produce 26% and groceries （食品杂货店）and other stores 13% "We thought waste was a problem in rich countries，" says Martina Otto，who works for the UN Environment Program.
"However，the new report finds，food waste is a big problem in nations rich and poor."
Each year，some 690，000，000 people go hungry.At the same time，about 10% of all CO2 on the Earth is from the activities that produce the food waste.Control on food waste can help deal with hunger and cut down that pollution.It is helpful to both people and the planet.By avoiding wasting food，we can save money and time.More importantly，we can help protect the Earth's most valuable resources （资源）.
Then what can we do to stop food waste？Small actions make a difference.Each of us can play a part.Next time，before you throw，think twice!
（1）Where is most food waste from？
A.Home cooking.
B.Restaurants.
C.Food stores.
D.Groceries.
（2）What is the third paragraph （段落）mainly about？
A.How we can protect the Earth.
B.Where we shall find resources.
C.Why we should avoid food waste.
D.What we will do with pollution.
（3）What is the purpose of the text？
A.To collect money.
B.To call for action.
C.To get some advice.
D.To express thanks.
In 1988，Wang Chengbang retired（退休）from the army.Instead of enjoying a relaxing life，he volunteered to save the soil from desertification（沙漠化）by planting trees in Korla，Xinjiang.
It is no easy job.The high temperature in Korla makes it difficult for anyone to work day after day in the sunshine.Besides，water is a big problem.In fact，Wang Chengbang's work in the first few years failed as very few trees survived（存活）.
But Wang Chengbang would not give up."After trying many different ways，I have learned how to grow young trees in a better way，" said Wang Chengbang.He also worked out new ways to save water.With his hard work，more and more trees have survived.So far，he has planted more than 1.5 million trees.Those green trees prevent desertification，make the air cleaner and protect people from the hot sun.Now，Korla is a model city in environmental protection.
Wang Chengbang is also successful in fighting cancer（癌症）.In 2005，he had cancer and was told that he had only six months to live.However，he continued taking care of his trees rather than lying on the hospital bed."Working is the best medicine.Planting trees helps to fight cancer，" he often jokes.
Now，at the age of 85，Wang Chengbang is still working.
（1）Is it an easy job for Wang Chengbang to plant trees？
（2）How many trees has Wang Chengbang planted so far？
（3）What is Wang Chengbang successful in？
（4）In the summer holiday，do you want to be a volunteer to work with Wang Chengbang？Why or why not？
Do video games do harm to our children？Today，many children spend a lot of their free time playing games on the Internet.In the UK，99%of kids aged8 to 15 play video games every week.This information tells us that the benefits and dangers of video games must be carefully considered.
For many people，video games are fun.They have bright lights，funny cartoons and exciting stories.Everywhere you look，you can see children playing these games.They play on buses and trains，in restaurants and even at school.
Video games are educational too.They make kids think in a creative way and theyhave to move their hands and eyes quickly.This can improve the way that a child's brain works.What's more，video games make children use their imagination.The player has to do many creative things，like drawing，telling stories and building things.Video games are also a good way to teach children about technology because they can learn how computers and other devices work while they play.
However，a recent study suggests that video games can also be bad for children.First，children can download many games for free.This means that parents often don't know if their children are playing violent or scary games.Second，many children spend too much time playing games on computers and this can lead to health problems.Third，if children spend too much time playing games instead of doing homework，they can have problems at school and get bad grades.Finally，video games can affect children's social skills.If children spend too much time playing video games by themselves，they might not learn how to play with their friends.
In conclusion，it seems clear that video games have some advantages and some disadvantages.It is up to parents to know what games their children are playing and how much time they spend on them.Parents should also make sure their children get enough exercise and spend time with other children.
（1）The underlined word "they" in Paragraph 3 refers to .
| A． |
kids |
| B． |
computers |
| C． |
video games |
| D． |
playmates |
（2）Which disadvantages of video games are mentioned in the passage？
a.Result in bad grades.
b.Make kids feel bored.
c.Lead to health problems.
d.Affect children's social skills.
e.Cause problems between parents and kids.
| A． |
c，d，e |
| B． |
b，d，e |
| C． |
a，c，d |
| D． |
a，b，c |
（3）In the writer's opinion， should play an important role in video games play for kids.
| A． |
family |
| B． |
society |
| C． |
schools |
| D． |
game companies |
（4）What's the structure of the passage？
| A． |
|
| B． |
|
| C． |
|
| D． |
|
Here at Nature Loving Kids，we know how much you want to make a positive（积极的）difference to our world!So，read on to find out how to protect our earth…
| Save energy and water! - On a fine and clear day，hang things outside to dry!This saves energy that would have been used on the dryer（烘干机）. - If you can，try cycling，walking，or using public transport to get out and about，instead of using the car. - Turn the taps（水龙头）off while brushing your teeth，and take short showers of four minutes or less! |
Be an advocate（倡导者）! - Share your knowledge with others，and help them become eco﹣heroes too!It takes lots of people working together to make changes happen - so share，share，share! |
| Reduce，reuse，recycle! - Before you throw something away，stop and think about what else it could be used for! |
Be friendly to wildlife! - Make your garden wildlife﹣friendly!You could build a bee hotel，or even create a pool. - If you own a cat that goes outdoors，put a bell around its neck so that vulnerablewildlife can hear it coming and make their escape! |
What else can you do to make the world better？
Now，get out there and save the world - you can do it!
（1）To save energy or water，you'd better .
| A． |
dry things in the sun |
| B． |
drive a car to work |
| C． |
take long showers |
| D． |
brush teeth with water running |
（2）To call on more people to work together，you should .
| A． |
save energy and water |
| B． |
be an advocate |
| C． |
reduce，reuse and recycle |
| D． |
be friendly to wildlife |
（3）What does the underlined word " vulnerable" mean in Chinese？
| A． |
野生的. |
| B． |
家养的. |
| C． |
强壮的. |
| D． |
弱小的. |
（4）The purpose of the passage is to .
| A． |
help the kids learn English |
| B． |
help people learn more about kids |
| C． |
teach kids how to keep animals |
| D． |
tell the kids how to protect the earth |
（5）This passage is from .
| A． |
a guidebook |
| B． |
a science book |
| C． |
a website |
| D． |
a newspaper |
Dogs might have the latest tools in the fight against cancer （癌症）：their noses!Researchers at California's Pine Street Foundation （PSF） say they have trained five dogs to smell cancer on a prison's breath.This could be exciting news.
A dog's sense of smell may be 10，000 to 100，000 times stronger than ours.But can dogs really smell illness？PSF researcher Michael McCulloch says yes. "We were very surprised by how exact they were，" he said. "They were telling who had cancer，and they were also saying who didn't."
McCulloch and his team asked four healthy people and one with cancer to blow into plastic tubes （塑料管）.Special materials in the tubes kept the things of each breath.The tubes were then placed one yard apart.Finally the dogs were allowed to smell the tubes.Each dog had been trained for three weeks to sit when it smelled cancer.Ninety﹣nine percent of the time，the dog sat next to the tubes blown into by patients with lung cancer.The dogs were right 88 percent of the time about breast cancer.
| Dogs in the Pine Street Foundation test were trained to sit when they smelled cancer.How well did they perform？Take a look at this chart to find out. |
||
| Breath Sample |
Number of Times the Dogs Sat Down |
Number of Times the Dogs Kept Standing |
| Breath from lung cancer patients |
564 |
10 |
| Breath from healthy persons |
4 |
720 |
No lab test for cancer has given more correct results than this test.The results are so amazing that many experts question the dogs' smelling power.They wonder if there were other reasons why the dogs did so well.For example，they thought the way the dog trainers behaved could have influenced how the dogs acted.However，most experts agree that this study is important.The information could help scientists create a simple breath test for cancer in the future.Once again humans may be getting a helping paw or nose﹣from their best animal friends.
（1）What's the latest tool a dog might have in the fight against cancer？
A.Tooth.
B.Nose.
C.Ear.
（2）What happened first in the Pine Street Foundation test？
A.The dogs were trained.
B.The tubes were placed one yard apart.
C.The dogs smelled the tubes.
（3）What was a dog supposed to do when it smelled cancer？
A.Smell again.
B.Turn around.
C.Sit down.
（4）Look at the chart.How many times did the dogs keep standing when they smelled the breath from healthy persons？
A.Less than 10 times.
B.Almost 600 times.
C.About 700 times.
（5）Why do many experts question the dog's smelling power？
A.Because no lab test for cancer has given more correct results.
B.Because the dog trainers influenced how the dogs acted.
C.Because they don't think this study is important.
The world uses about a thousand million （百万） tons of water a day． Water is a human right and everyone should have their share． Yet more than 700 million people around the world have trouble getting clean， safe water．
Treating wastewater is a good way to provide fresh water for us． And it also helps the environment by keeping waste out of rivers and oceans． 80% of wastewater around the world is not treated at all， and it is running into oceans．
But now we have got the technology to treat and reuse the wastewater．
While 75% of our planet is covered with water， only about 2% is fresh water﹣that comes from rivers， lakes， ice and snow． The rest， 98% of the water， is in seas and oceans． It is too salty to drink． Then desalinationbusinesses come in． More than 19.000 factories have been built around the world， mostly in coastal countries． They process（加工） more than 92 million tons of water every day． But the technology they use requires a lot of energy．
Scientists are working to create a less costly technology． They want to produce 20 times more clean water and make sure everyone has enough． But for now， the world still faces each day with not having enough water for everyone．
（1）How many people have trouble in getting clean water around the world？
A． Under 10 million．
B． Only 19 million．
C． About 92 million．
D． Over 700 million．
（2）Treating waste water helps the environment by ．
A． storing waste in ice and snow
B． letting waste run into oceans
C． keeping waste out of rivers and oceans
D． sending waste to coastal countries
（3）What does the underlined word "desalination" in Paragraph 3 mean？
A． 远洋运输
B． 潮汐发电
C． 食盐销售
D． 海水淡化
（4）At present， the technology to process water ．
A． needs much energy
B． saves much money
C． satisfies everyone
D． causes pollution
（5）What can we infer from the last paragraph？
A． Water should be a human right．
B． The water problem is still serious．
C． Our planet is covered with water．
D． Everyone has enough clean water．
In the year of 2020， the coronavirus（新冠病毒）out broke（爆发）all over the world． A lot of people suffered from（遭受……折磨）a fever or a cough． Don't be afraid． Here is some advice to help you protect yourself．
Wash your hands． You need to wash your hands with soap and water before you eat， after you use the toilet， and after you touch animals， because your hands may carry viruses （病毒）．Cover your nose and mouth． When someone sneezes（打喷嚏）or coughs，the viruses can travel as far as one meter through the air，so you'd better stand a proper distance while talking to someone who has a cold． And always cover your mouth and nose with a piece of paper when you sneeze or cough，and then clean your hands． Wear a mask（口罩）． Some doctors say that masks can stop the virus as much as 80%， but if you don't wash your hands often， it's no use wearing a mask． So it's necessary to wear the mask in the groups of people．
Do sports often． Exercises will help make your body strong enough to resist（抵抗）the virus．
How to protect yourself from the corona virus |
|
Wash your hands． |
● （1） you eat． ● After you use the toilet． ● After you（2） ． |
Cover your nose and mouth． |
● When someone sneezes or coughs， you'd better stand a proper distance while talking to someone． ● Always cover your nose and mouth with a piece of（3） when you sneeze or cough． |
（4） ． |
It's necessary to wear the mask in the groups of people． Masks can stop the virus as much as 80% |
Do sports often． |
Exercises will help make your body（5） enough to resist the virus． |
October 21，2013was an unforgettable day．Harbin had to close roads and schools，and stopped hundreds of flights from its airport，because the air pollution was so bad there．
News reports said the smog （雾霾） was so thick that people couldn't see more than 10or 20meters in front of them．The city's website said："You can't see your own fingers in front of you．"The local people said there was a"burning"smell in the air．Many people covered their noses and mouths with scarves．
The pollution was caused for the following reasons：farmers burnt off corn stalks （称）；the people burnt coal （煤） for heating and winds were low，which allowed the smoke to remain over the city．
Harbin has a population of more than 10million people．It lies in northeastern China，where cold winter weather can last six months．The main fuel （燃料）there is coal，because it is cheaper than other types of fuel．
Air pollution from burning coal can cause health problem like heart disease．During the smog days in Harbin，the number of people taken to the hospital with breathing problems was 30% higher than usual．
The local government is trying to use less coal by adding much better roofs and windows to building to cut heating needs．It has also used cleaner fuel for cars and factories．
66．Which of the following sentence is the best for the blank （ 横线）in paragraph 2？
| A． |
They could not even see the person standing next to them． |
| B． |
They lived a healthy and happy life． |
| C． |
They got up a little earlier than before to enjoy fresh air． |
| D． |
They could hear each other clearly． |
67．What is talked about in paragraph 3？
| A． |
The people of the city． |
| B． |
The food of the city． |
| C． |
The reason for the pollution． |
| D． |
The life of the farmers． |
68．Coal is the main fuel in Harbin，because
| A． |
coal is richer in Harbin． |
| B． |
coal is cheaper in Harbin． |
| C． |
coal is greener in Harbin． |
| D． |
coal is clean in Harbin． |
69．How does the local government cut heating needs？
| A． |
By using cleaner fuel for cars and factories． |
| B． |
By burning off corn stalks and coal． |
| C． |
By stopping hundreds of flights from its airport． |
| D． |
By add much better roofs and windows to buildings． |
70．What's the best title （标题） of the passage？
| A． |
The air pollution in Harbin． |
| B． |
The water pollution in Harbin． |
| C． |
The noise pollution in Harbin． |
| D． |
The land pollution in Harbin． |
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