Do you often run outdoors to keep healthy？ Have you ever thought about how running helps to clean up the earth？ Sometimes a creative mind can bring us a win﹣win（双赢） situation.
Plogging， a new way to exercise， began in Sweden. The name "plogging" comes from two words the Swedish word "plocka"，which means "to pick up"， and the word "jogging"，which means "to run slowly". A Swedish man called Eric started the movement. He saw rubbish here and there when riding to work each day. He became worried about the dirty environment and decided not to go to work by bike any more. Instead， he began to run to work and pick up the rubbish at the same time. To his joy， more and more people followed him and soon plogging became popular.
Many people choose plogging instead of just jogging because they think plogging is a good way to help clean up the earth. Sometimes rubbish is difficult to collect because it may scatterall around. But if the runners pick up the rubbish on the way， it is quite different. After all， many hands make light work.Another reason is that plogging burns 48 calories（卡路里）. According to a reseach， plogging for 10 minutes burns 48 calories， while usual jogging for 10 minutes burns about 39 calories.
Everyone on the earth should play a part in cleaning it up! It's time for us to take action together. So ready？ Let's plog tomorrow!
（1）What did Eric do after he saw rubbish everywhere while riding to work？
| A． |
He began to pick up the rubbish while running to work every day. |
| B． |
He kept riding to work every day. |
| C． |
He didn't care and did nothing about it. |
| D． |
He took a bus to work instead of riding every day. |
（2）Why do people choose plogging？
| A． |
Because there are too many bikes in the city. |
| B． |
Because it is a good way to help clean up the earth and burn more calories. |
| C． |
Because riding bikes is harmful to their health. |
| D． |
Because the buses are very busy. |
（3）What does the underlined word "scatter" mean in Chinese？
| A． |
爆炸 |
| B． |
集中 |
| C． |
散落 |
| D． |
消失 |
（4）Which of the following is TRUE according to the passage？
| A． |
The name "logging" comes from two English words. |
| B． |
An English man called Eric started plogging. |
| C． |
Plogging for 10 minutes burns about 84 calorie. |
| D． |
Plogging started in Sweden. |
（5）What's the best title of the passage？
| A． |
A Bad Habit﹣Littering |
| B． |
The Best Sport﹣Jogging |
| C． |
A New Way to Exercise﹣Plogging |
| D． |
The Best Exercise﹣Riding |
Britain was once covered by thick forests， home to many animals which no longer live here． There were wolves， bears and wild cattle with less than four million people． They lived in small villages protected by wooden walls from the animals outside．
However， all this changed． Now Britain's population has increased to 65 million． Three﹣quarters of Britain consists of fields， towns or cities． Although 25% of land is countryside，new methods of farming mean that there are fewer birds and small animals than ever before． Britain is one of the few countries in the world without a large wild carnivore（食肉动物）．
Some people want to change this． Some say that Britain needs to become more natural again and suggest trees and plants that once grew in Britain should be allowed to grow again． They even say that large wild animals which have not lived in Britain should be helped to return and live wild． They call this " rewilding"．
Not everyone agrees． In the last twenty years， over one million trees have been planted and there are plans for more﹣but wild animals？ Some people ask if wolves will attack sheep or even humans． They are also angry that rewilding might mean an end to walking in the hills many people enjoy． So far， there are no wolves or bears in Britain's forests﹣but soon there might be!
（1）Why does Britain have fewer wild animals？
| A． |
Their living conditions are destroyed by humans． |
| B． |
They are being killed by their natural enemies． |
| C． |
The number of large animals is increasing． |
| D． |
People there don't like wild animals． |
（2）What does the underlined word " rewilding" probably mean？
| A． |
Protecting wild animals． |
| B． |
Returning wild animals to Britain． |
| C． |
Planting more green plants． |
| D． |
Helping wild animals live better． |
（3）What is the main idea of the last paragraph？
| A． |
Some people are against rewilding． |
| B． |
People plan to plant more trees． |
| C． |
Wild animals will be back to Britain． |
| D． |
Wild animals do harm to humans． |
（4）Which of the following can be the best title？
| A． |
Causing UK Greener |
| B． |
Wolves Returning to UK |
| C． |
Saving Wildlife in Britain |
| D． |
Making Britain Wild again |
"I am so busy with my study． I don't even have enough time to have breakfast．"said Zhangli， a middle school student． Do you have the same problem __A__ Zhangli？ However， missing breakfast could raise your risk of heart problem by 87 percent， according to a new study． Researchers at the University of Iowa analyzed 18 years of data on 6，550 people over 40 years old who had no history of heart problems．They were given regular surveys __B__ included the question， "how often do you eat breakfast？ Most （59 percent）ate breakfast every day，but 5.1 percent never did，10.9 percent rarely did， and 25 percent would miss for a few days． The team found that①早餐习惯与心脏病风险之间存在明显关联．Those who didn't eat in the morning were up to 87 percent more likely to develop heart problems．
" It's believed that ②an， important， day， breakfast， the， is， meal， of， but there has been an
increasing prevalence （普遍）of missing breakfast over the past 50 years in the United States， with as many as 23.8 percent of young people missing break fast every day，" the researchers said．"However， studies on the health effects of missing breakfast are rare．"
The team pointed out a few factors which could underlie this connection． ③ Firstly ， those who don't eat breakfast may be more likely to snack unhealthily ．Secondly， breakfast may help to balance blood sugar levels and control blood pressure． The findings were published on the American College of Cardiology． Some days later a similar study showed people who missed breakfast and ate a late dinner were less likely to survive a heart attack． And Borja Ibanez， a doctor of medicine， also pointed out those who didn't eat breakfast were more likely to smoke， be lack of exercise， and drink alcohol．
As for us teenagers， what are your opinions on breakfast？ Do you think breakfast is important for us？
任务一：请分别在文中A、B两处的横线上填入适当单词（每空一词）
（1）A B
任务二：请将文中①处句子译成英语．
（2）The team found that
任务三：请将文中②处的斜体单词连成句子
（3）It's believed
任务四：请将文中③处划线句子译成汉语
（4）
任务五： What can we learn from the passage？
（5）
Many environmental groups are warning that oceans of the world are in great danger． In the past 50 years，the number of water with zero oxygen（氧气） in the open ocean has increased more than four times． In the near coast water bodies， including the river mouth and seas， low﹣oxygen areas have increased more than 10 times since 1950．Scientists discover that oxygen continues dropping ever outside these zones as the Earth warms． To stop the drop，the world needs to control in both climate change and nutrient（养分） pollution．
Oxygen is a must to life in the oceans． The drop in ocean oxygen is among the most serious effects of human activities on the Earth's environment．
This is the first time for the scientists to take such a deep look at the causes， results and solutions to low oxygen worldwide， in both the open ocean and the near coast waters．About half of the oxygen on Earth comes from the ocean． However， mixed effects of nutrient loading and climate change are greatly increasing the number and size of "dead zones" in the open ocean and the near coast waters， where oxygen is too low to support most sea life．
In the areas traditionally called"dead zones"． like those in Chesapeake Bay and the Gulf of Mexico， oxygen drops to levels so low that many animals have trouble in breathing and die．As fishes run away from these zones， their living areas become smaller and smaller． But the problem goes far beyond "dead zones"． Even smaller oxygen drops can hold up the growth in animals and lead to disease or even death． Low oxygen also can cause the release of dangerous chemicals．Although a few animals can grow well in dead zones， overall biodiversity（多样性）falls．
（1）How to stop the drop of ocean oxygen in the article？
| A． |
By controlling in both climate change and nutrient pollution around the world． |
| B． |
By taking a deep look at the causes， results and solutions to low oxygen worldwide． |
| C． |
By running away from these zones， for the living areas become smaller and smaller． |
| D． |
By cutting down the number of animals in the oceans． |
（2）Why are these waters called"dead zones" from the article？
| A． |
Because the oxygen in these areas is too low for most sea life to live． |
| B． |
Because nutrient loading and climate change are greatly increasing． |
| C． |
Because there are no animals living in these areas． |
| D． |
Because low oxygen also can cause the release of dangerous chemicals． |
（3）Which of the following statements is TRUE according to the article？
| A． |
Only a few animals living in the sea need oxygen． |
| B． |
Climate change can help cut down the dead zones． |
| C． |
Fishes grow faster and better in low oxygen areas． |
| D． |
Human activities have many serious effects on ocean environment． |
Global warming is a big problem that we have to stop． One of the best things we do is to plant more trees． Trees can take in CO2 in the air and stop global warming．（1）
A team of scientists at Boston University has been working with NASA to study Earths green vegetation（植被）． They used a special NASA camera and found that global leaf area had increased by 5 percent since the early 2000s． （2） That's about one﹣quarter of the size of the entire Amazon rainforest．
The growth mainly came from China's forest protection programs， NASA said． For example， since 1962． China has been planting trees in Saihanba． Hebei Province． It was once a desert，（3）
（4） Ant Forest， a feature in Alipay app， gives users points for doing eco﹣friendly things such as walking and going paperless in the office． Users can then use these points to water and grow their own virtual（虚拟的）trees． When the virtual trees are big enough， Ant Forest will plant real trees somewhere in the world．（5）
A． More than 55 million trees have been planted in this way．
B． The Chinese public has also joined in these activities recently．
C． And China was responsible for 25% of that gain． according to the study．
D． However， people there can produce vegetables without any difficulty now．
E． But now， China has turned the area into the country's largest man﹣made forest．
F． According to a news report， China is doing a great job of"greening"the world．
Trees are one of the oldest" citizens（公民）" of our Earth． They keep our air clean ， reduce noise pollution， improve water quality and provide food and building materials．
Just like us， trees change a lot as they grow． At I to 3 years old， young trees learn how to protect themselves． For example， many trees grow thorns（刺）to warn animals not to go near． Most young tree have large， deep green leaves so that they can catch enough sunlight and change it into their food and energy．
When trees are 4 years old， they begin to grow very rapidly and become strong enough to face challenges later in life． At the age of 15， trees become young adults． They grow more slowly and begin to produce flowers and fruit．
It is not until the tree is 20 to 25 years old that it becomes a real adult． The tree reaches its largest size． The adult tree gives us shade， oxygen and natural beauty； it is also a great place for a tree house， or a place for us to read a book， listen to music and so on． If we give the adult tree proper care， it will go on to live healthily for many years．
Gradually， trees begin to grow older and older and even die． At this time， they still have their important place in nature． When a tree becomes hollow（空心的）or part of it becomes dead， it provides a home to small animals and is a source of food for many other animals．
In many ways， the life of a tree is similar to our own life experience． When we are looking at the life of a tree， we learn about that each period of life brings its own form of joy and challenge．
Enjoy every minute of the life of the trees and take care the trees!
（1）What can it be used as when a tree becomes hollow？
A． A home to small animals．
B． Food for all animals．
C． Shade and beauty for people．
D． A place for a tree house．
（2）Put the following in the right order according to the passage．
①Grow very rapidly
②Become a real adult
③Have large， deep green leaves
④Grow older and die
⑤Produce flowers and fruit
A．②①③④⑤
B．③⑤①②④
C．①③⑤②④
D．③①⑤②④
（3）Why should we enjoy every minute of our own life according to the passage？
A． Because our life is becoming better and better．
B． Because tree give us so much and make our world beautiful．
C． Because the life of a tree is similar to our own life experience．
D． Because each period of life brings its own form of joy and challenge．
（4）The best title for the passage should be
A． The life of a tree
B． The kinds of trees
C． The mystery of a tree
D． The advantages of a tree
（5）Which of the following shows the structure（结构）of the passage？
（1＝ paragraph（段落）1 2＝ paragraph2， …）
A． 1→2，3，4→5，6
B． 1，2→3，4→5，6
C． 1→2，3，4，5→6
D． 1，2→3，4，5→6
New Energy in the Twenty﹣first Century
Energy from wind
Wind is a kind of clean energy，and there is lots of it，but，if there's no wind，there is no wind energy．
Energy from the water
When water from a high place to a lower place， it can make electricity（电）without pollution． However， people have to build dams（水坝）to use this energy， and building dams is very expensive．
Energy from the earth
There is heat in the rocks under the earth． Scientists use the heat to make geothermal（地热的）
energy． This kind of energy is cheap and clean， but it is only possible in a few places in the world．
Energy from the sun
Solar panels（太阳电池板）on the roofs of house can turn energy from the sun into electricity．Solar power is clean and plentiful（丰富的）． When the weather is bad， it doesn't work．
（1）How many kinds of energy does the passage talk about？
| A． |
2 |
| B． |
3 |
| C． |
4 |
| D． |
5 |
（2）What kind of energy is very expensive if we want to get it？
| A． |
Energy from wind |
| B． |
Energy from the water |
| C． |
Energy from the earth |
| D． |
Energy from the sun |
（3）What kinds of energy depend much on the weather according to the passage？
| A． |
Energy from the water and energy from the wind． |
| B． |
Energy from the water and energy from the earth． |
| C． |
Energy from the earth and energy from the sun． |
| D． |
Energy from the wind and energy from the sun． |
（4）These kinds of energy have something in common， it is ．
| A． |
expensive |
| B． |
clean |
| C． |
easy to get |
| D． |
difficult to get |
（5）According to the passage， we can know all these kinds of energy ．
| A． |
have advantages and disadvantages |
| B． |
are widely used in China |
| C． |
are widely used in America |
| D． |
are widely used in the world |
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． |
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． |
Energy is everywhere in the world．We use energy every day．There are all kinds of energies in the world，such as hydropower resources，sun's energy，wind power．
Liangshan is called"kingdom of hydropower resources"．Jinsha River，Yalong River and Dadu River are just like three great dragons carrying hydropower resources to Liangshan from the
Qinghai﹣Tibet Plateau．The government has planned to build 11large and super hydropower stations on Jinsha River，Yalong River and Dadu River within Liangshan．On the other hand，there is rich wind power in Liangshan．The government is building a large wind power station between Huili and Ningnan．
Electricity is a form of energy，and this is what powers the TV，mobile phone，fridge and more．Our growing need for energy is one of the problems in the world today，because producing electricity also produces pollution．Although energy in Liangshan is very rich，we must do something to protect the environment and save lots of energy．
Here are some simple ways to make a big difference when we're using electricity．
On or off？Leaving TV and computers on with the little red light showing still uses electricity，even though they might look like they're turned of．To stop this，you can turn them off．
Light out!Turning light off when you're not in the room can save a lot of energy．
Fridge door closed．Try not to leave the fridge door open or put hot things inside when you used the fridge．Because it takes a lot of energy to keep cool．
Use the sun's energy．An increasing number of people are fitting solar panel to their houses．They create electricity from sunlight．which can then be used to make hot water or do the cooking and so on．
73．From the passage，we can know" hydropower resources"may be resources got from in Liangshan．
| A． |
the sunlight |
| B． |
the sea |
| C． |
the river |
| D． |
the wind |
74． can save energy according to the passage．
| A． |
To turn off the light when you're not in the room |
| B． |
To do some cooking |
| C． |
To leave the fridge door open or put hot things inside |
| D． |
To leave TV and computers on |
75．Maybe the passage comes from
| A． |
a novel |
| B． |
a magazine |
| C． |
a fairy tale |
| D． |
a historical story |
76．Which of the following is TRUE according to the passage？
| A． |
We have some energy problems today． |
| B． |
The fridge can't keep food fresh，cool and healthy． |
| C． |
When we produce electricity，we don't produce pollution． |
| D． |
Electricity from sunlight can't be used to make hot water． |
77．The passage does NOT tell us ．
| A． |
something about electricity in Liangshan |
| B． |
how to use the mobile phone |
| C． |
producing electricity also produces pollution |
| D． |
some different ways to save electricity． |
Have you ever heard of e﹣waste（电子垃圾），which can be produced every day？
How do you deal with your computers， MP4 players and mobile phoneswhen they're broken or you want a new one？ Most people just throw them away． With the development of electronic industry（电子产业）， e﹣waste pollution has become a serious problem． According to the United Nations， in 2014， people around the world produced 41 .8million tons（吨） of e﹣waste and only recycled 6． 5million tons． The US was the biggestwaster，producing7． 1million tons． China came second． with 6million tons．
It's important to pay attention to e﹣ waste． It can either be valuable orharmful， depending on how we deal with it． E﹣ waste is a valuable urban mine（城市矿藏）． The value of the metals， like gold and silver in the waste aroundthe world， is surprising． And the metals can be reused． But if people throwthem away， the toxic chemicals（有毒化学物质） can get into the earth or air． affectingthe environment and people's health．
Apple， for example， now recycles people's used products in China whenthey are buying new ones． The company will test and repair the used ones andsell them at lower prices． To help reduce e﹣waste， we can buy longer lastingelectronic products．If you have unwanted electronics， find a new home forthem． You can also take computers and phones to see if companies offerrecycling programs．
（1）The following can become e﹣waste EXCEPT ．
| A． |
computers |
| B． |
mobile phones |
| C． |
plastic bags |
| D． |
MP4 players |
（2）Which country producedthe second most e﹣waste in 2014according to the United Nations？
| A． |
China． |
| B． |
America． |
| C． |
Japan． |
| D． |
France． |
（3）The underlined word" affecting" means ．
| A． |
保护 |
| B． |
提高 |
| C． |
改善 |
| D． |
影响 |
（4）We can to reduce e﹣waste．
| A． |
sell the electronics to Apple company |
| B． |
buy longer lasting electronicproducts |
| C． |
keep the unwanted electronics in our bedrooms |
| D． |
throw away the unwanted electronics |
（5）The main purpose of this passageistov．
| A． |
prove that e﹣waste is not useful |
| B． |
encourage people to buy more electronic products |
| C． |
advise people to deal with e﹣waste properly to reduce pollution |
| D． |
advise people to sell the unwanted electronics |
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）
Our earth is in trouble． Our drinking water is becoming dirtier and the air is not as clean as before． People and factories are polluting the air， rivers， lakes and seas． You may think there is nothing you can do to help． That's not true． （1）
Cars burn oil．（2） Some people believe that too much CO2 is making the earth warmer than ever．（3） This can save some oil and produce less CO2．
（4） So turn off the air conditioner（空调） when you don't need to use it． Use lights that save energy． Use fewer things that cannot be used again． When you buy something． consider those made from things that can be used again first．
A lot of water is needed for a shower． So take shorter showers．（5）
Every small action can make a big difference to our earth． Let's take action to protect it
A． This can cut the use of water．
B． Air pollution is very serious．
C． This will make a lot of CO2 into the air．
D． So try to walk， ride a bike or take a bus．
E． Nobody can play a role in protecting the earth．
F． There are many things you can do to save the earth．
G． The biggest energy use a home is for keeping warm or cool．
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． |
Gardening is popular in many parts of the world． It brings us sweet smelling flowers， fresh fruit and vegetables． But you can get more from your garden．
Gardening helps to keep healthy． Today's people sit indoors for too long and don't get much exercise． When you garden， you have to move around． It's a good chance for you to exercise your body by watering flowers or doing some digging． Besides， when you are in your garden， you can feel the warm sunshine． This means you are getting Vitamin D． It helps your bodies use calcium（钙），which is necessary to keep your bones（骨骼） strong．
______It gets them of computers， televisions and phones． Gardening can be a great teacher to teach children about nature and healthy eating． It can also help them to understand the meaning of " No pains， no gains．"
Gardening is a great way to meet people and build relationships．When you are gardening， you are outdoors． So it is a perfect time to communicate with your neighbors． Most people love to talk about their hobbies， and so do gardeners． They usually enjoy showing people what they are growing． And most enjoy sharing advice and stories about their gardens．
（1）When it's ，you can get Vitamin D in your garden．
| A． |
sunny |
| B． |
cloudy |
| C． |
snowy |
| D． |
rainy |
（2）According to the passage， is one of the gardening activities．
| A． |
watching TV |
| B． |
watering flowers |
| C． |
walking dogs |
| D． |
playing with phones |
（3）Which of the following can be the missing part in Paragraph 3 ？
| A． |
Gardening will be good for your bones． |
| B． |
Gardening may help people to feel happy． |
| C． |
Gardening is a great activity to do with children． |
| D． |
Gardening can be a good way to meet neighbors． |
（4）The best title of the passage may be " "．
| A． |
Outdoor Activities |
| B． |
Advantages of Gardening |
| C． |
Healthy Eating Habits |
| D． |
Relationships with Neighbors |
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