We have been used to wearing masks（口罩） in public since February．About 300 million masks are used and then thrown away every day in China． Where do these masks go？ You might think they just go in a rubbish bin． But that's just the first stop on the masks' journey．
After the masks are thrown into the bins，rubbish trucks empty the bins and take the rubbish to landfills（垃圾场） Next， the masks will be taken to rubbish incinerators（焚化炉） and burned．
Burning masks might not seem to be very good for the environment． Won't it cause pollution？
The answer is "no"， according to China Daily． The main material of most masks is polypropylene（聚丙烯）． It's non﹣toxic（无毒的） After burning， it changes into water and CO2．In fact， burning the masks can bring some benefits（益处）． The process of burning the rubbish can produce electricity． Burning one ton of rubbish can produce more than 400 kilowatt hours（度） of electricity． Some people make a prediction that there will be 162，000 tons of used masks in
China this year． Burning all of them can produce more than 64 million kilowatt hours of electricity．
This is enough to make an electric car drive about 370 million km， which is 9，250 times as long as the earth's equator．
At last， the slag（残渣） from burning masks can be recycled to make bricks（砖块） or fill the roads．
（1）How many masks are used and then thrown away every day in China？
A． More than 64 million．
B． About 300 million．
C． About 370 million．
D． About 9，250 million．
（2）The first stop on the masks' journey is ．
A． electricity factories
B． landfills
C． rubbish trucks
D． rubbish bins
（3）The main material of most masks is ．
A． plastic．
B． polypropylene
C． water
D．CO2
（4）Which of the following is TRUE according to the passage？
A． Burning masks won't cause pollution．
B． People are not used to wearing masks in public．
C． There are 162，000 tons of used masks every month in China．
D． The process of burning the masks can produce electricity and bricks．
（5）What is the best title of the passage？
A． How do We Bum Used Masks？
B． How do People Produce Electricity？
C． Where do the Used Masks Go？
D． Why do We Throw Away Used Masks？
For kids， it's very important to stay healthy．Kids should pay more attention to their lifestyle and help themselves have healthy life habits．Here are some tips on staying healthy for kids．
Kids hardly care about basic hygiene（卫生）． they share everything from drink to snacks． So it is important for kids to know the basic hygience habits such as washing hands before eating，brushing teeth at least twice a day and so on． Similarly， kids should protect themselves from other kids with different kinds of infections（传染病）．
Healthy eating helps to live a healthy life． Kids should pay attention to the eating habits．Encourage themselves to eat healthy food such as fresh fruit and vegetables．And eat different kinds of food at different ages． Kids should know junk food is bad for health and try to eat less junk food．
Different activities can be planned to teach kids the importance of staying healthy．Some simple reading materials can let the kids know about their bodies． Also， playing games about brushing teeth， having meals is very useful and funny for kids． Certain group games and activities or even funny street plays can also help the kids understand the importance of staying healthy．
根据短文内容，选出最佳选项．
（1）Which of the following is a hygiene habit？
| A． |
Sharing drink with others． |
| B． |
Sharing food with others． |
| C． |
Washing hands before eating． |
| D． |
Brushing teeth once a day． |
（2）How many kinds of healthy food are mentioned in the third paragraph？
| A． |
Two． |
| B． |
Three． |
| C． |
Four． |
| D． |
Five． |
（3）Kids can know the importance of staying healthy by the activities except ．
| A． |
reading materials |
| B． |
playing games |
| C． |
having parties |
| D． |
performing street plays |
（4）The last paragraph mainly talks about ．
| A． |
games for kids to have meals |
| B． |
activities for kids to stay healthy |
| C． |
how to protect from infections |
| D． |
how to have healthy eating habits |
（5）What's the best title of the passage？
| A． |
Keep Away from Infections |
| B． |
Healthy Eating |
| C． |
Healthy Activity |
| D． |
Staying Healthy for Kids |
Peter could not sleep well and he woke up several times during the night．so he went to see a doctor．The doctor gave him some sleeping tips．
| Have regular（有规律的）sleep Wake up at the same time and go to bed at the same time every day．This can make your sleep a bit better． |
Turn of the TV Don't watch TV for more than half an hour before you decide to sleep．Studies show that it is bad for the quality （质量） of your sleep．Read a book or listen to some light music to prepare your body for sleeping |
| Have a clean and comfortable bedroom A clean environment helps people to be happy and relaxed ，Make sure that you have turned off all lights that might come into your room． |
Do some exercise Exercising will belp you to fall asleep more easily， so walk for 20 minutes every day andyou will sleep better at night．But don't do it just before you go to bed． |
根据材料内容，判断下列句子意思与原文是否相符，相符的写T，不相符的写F.
（1）Peter went to see a doetor bceuse there was something wrong with his stomach．
（2）We should not watch TV for more than half an hour before going to sleep．
（3）We can listen to some light music to prepare for sleep．
（4）The doctor asked Peter to go to bed with the light on．
（4）According to the passage， we'd beteer not do exercise at night．
Sleep plays an important role in brain（大脑）development．Children should get enough sleep．（1） A study says that because of being short of sleep，it is much harder for children to do something carefully．And also they become forgetful and easy to make mistakes．Another study shows that the right amount of night﹣time sleep is just as important for children's development as healthy eating and taking exercise．
（2） In general a younger child needs more sleep than an older one．Children at the age of 5﹣11 will need 10﹣12 hours of sleep a night while children at the age of more than 11 will need less hours
In fact，many parents don't know how to help their children get enough sleep．Here is something you can do．For children at the age of 5﹣11，a 30﹣40 minutes routine（常规）before sleep is helpful．（3） In the activities，children relax and enjoy themselves a lot，and they will go to sleep more easily．
Children at the age of more than 11 may go to bed late in the evening，talking with friends online，playing games or watching TV．（4） And even they will be tired during the day．So limit（限制）your children's use of the Internet，games and the TV before they go to bed．（5） ．
根据短文内容，从下列七个选项中选出能填入空白处的最佳选项，并在答题卡上将其字母标号涂黑．
| A． |
If not，many problems will come to them． |
| B． |
Why does a child need so much sleep？ |
| C． |
How many hours of sleep is enough for a child？ |
| D． |
So they will find it difficult to get up in the next morning． |
| E． |
It includes a bath，reading a story together and so on． |
| F． |
Taking exercise is as important as enough sleep for children． |
| G． |
And don't allow them to have a computer or TV set in their bedroom． |
| A． |
The World Health Organization（世界卫生组织） says air pollution kills seven million people around the world each year． Even if polluted air does not kill us， it can make us very sick． |
| B． |
However， breathing dirty air may do more than hurt your body． It can also affect（影响） your brain and your ability to think． |
| C． |
A new study shows that air pollution can cause a"huge"reduction（减少）in our intelligence（智商）．The researchers reported that long﹣term exposure（暴露） to air pollution can affect a person's mental（智力的） abilities in two areas： language and math． |
| D． |
Xi Chen， the researcher of the Yale School of Public Health led the study． He and his team found that breathing polluted air can reduce a person's education level by about one year． |
| E． |
Chen said that the effect（结果） generally is worse for those over 64 years of age，for men and for those with little or no education． |
| F． |
"The older persons﹣ they are more affected． And we find， quite interestingly，men are more affected than women． And people working outdoors are more affected than people working indoors． |
| G． |
The researchers noted that the effect of pollution on language ability is even more serious as people age， especially among men and the less educated． |
| H． |
Why were language skills more affected than math？ There are two main kinds of tissue（组织）in the brain： white matter and grey matter． White matter is more connected with a person's language skills， while grey matter is connected to our ability to solve math problems． Studies have shown that air pollution has a great effect on the white matter in the brain， but not the grey matter． |
Chen said that air pollution did affect the math skills， just not as much as their language skills．
（1）Air pollution causes million people to die around the world each year．
| A． |
one |
| B． |
two |
| C． |
seven |
| D． |
sixty﹣four |
（2）Which is not true according to the passage？
| A． |
Breathing dirty air may hurt your body |
| B． |
Breathing dirty air can affect your brain |
| C． |
Breathing dirty air can affect your ability to think |
| D． |
Breathing dirty air can make your immune system（免疫系统） strong |
（3）The effect of breathing polluted air generally is worse for those people except ．
| A． |
men |
| B． |
women |
| C． |
those with little or no education |
| D． |
those over 64 years of age |
（4）In the sixth paragraph， "people working outdoors"probably refers to（ 指的是）" "
| A． |
the researchers |
| B． |
people with little or no education |
| C． |
people from the World Health Organization |
| D． |
people from the Yale School of Public Health |
（5）Air pollution affected the language skills math skills．
| A． |
as much as |
| B． |
as little as |
| C． |
more than |
| D． |
less than |
The winter holiday is usually a good time to sleep in． But Gao Yuqi， a 14﹣year﹣old boy from Anhui， got up at 7： 00 am to run at least 2 kilometers every day during the holiday． In fact，this exercise was part of this homework．
Gao was not alone． Many schools across the country required students to exercise during the winter holiday． Part of the reason is that physical education test scores are now worth more on the senior high school entrance examination （ 中考）． And the score is now worth up to 60 points．
Because of this， Gao's school now asks students to run when the weather is nice， and exercise indoors if it is bad． Students have to post（公布）exercise photos in their classes' QQ groups． At the Golden Apple Jincheng No． 1 Middle School in Chengdu， students have daily exercise plans． For example， they have to skip rope（跳绳） for two minutes and do three sets of sit﹣ups（仰卧起坐） each day． Their parents sign off（签名）on their plans when they finish exercising．
This has been a big challenge for many students， but has also helped to make exercise a bigger part of their lives． Many students like Gao used to hate running， but now they are able to run for over half an hour every day． They fell in love with exercise during the holiday．
（1）How many kilometers did Gao Yuqi run every day during the holiday？
| A． |
At least one kilometer． |
| B． |
At least two kilometers． |
| C． |
At least three kilometers． |
| D． |
At least four kilometers． |
（2）What did the schools require the students to do during the winter holiday？
| A． |
To exercise． |
| B． |
To be volunteers． |
| C． |
To have a rest． |
| D． |
To do a survey． |
（3）What do the students have to do when they finish exercising in Gao's school？
A． To call their tea．
| A． |
To put their plans online． |
| B． |
To ask their parents to sign off on their plans． |
| C． |
To post exercise photos in their classes' QQ groups． |
（4）Which of the following is not mentioned in the passage？
| A． |
Skipping rope． |
| B． |
Swimming． |
| C． |
Sit﹣up． |
| D． |
Running． |
（5）What is the passage mainly about？
| A． |
How to exercise during the winter holiday． |
| B． |
Exercising is a big challenge for many students． |
| C． |
Physical education test scores are important now． |
| D． |
Exercising is becoming part of students' homework． |
Sometimes you get so angry that you feel like you are going to burst! It may seem like your anger （生气，发怒） will be the boss of you． What can you do to control your anger and how to keep yourself and others healthier and safer？ Here are some ideas to help you．
• Take a deep breath before your heart slows down again．
• Count from I to 10slowly in your mind before you open your mouth． Then count another 10． Think about what to do or say before making a choice．
• Walk away from the place that makes you angry． Go somewhere else until you've thought about what you can do．
• Use your words to tell your feelings． Don't hurt anyone with your hands or feet．
• Say what you feel in a low voice， not in a loud voice．
Sometimes you need to do something to let those angry feelings out． For example， doing a chore that you hate is a very good idea． It can get rid of （消除） your anger and you can feel better when that chore has been done． In this way， you will make anger become something useful．
根据短文内容，选择最佳选项，将其标号在答题卡上涂黑．
（1）What's the Chinese meaning of the underlined word "burst" in this passage？
| A． |
绽放 |
| B． |
爆炸 |
| C． |
分隔 |
| D． |
闯入 |
（2）What will happen if you are the boss of your anger？
| A． |
You can burst． |
| B． |
You can shout loudly． |
| C． |
You can keep calm． |
| D． |
You can be dangerous． |
（3）How many numbers should you count to control yourself before making a choice？
| A． |
10 |
| B． |
20 |
| C． |
30 |
| D． |
40 |
（4）What's the best title of this passage？
| A． |
How to control your anger？ |
| B． |
Don't hurt anyone with your hands． |
| C． |
Do some chores that you hate． |
| D． |
How to make a good choice？ |
"Mom， "said Trevor， as he watched his mother washing the old cans （罐）， "why are you washing these old cans？"
"I'm getting them ready for being put into the recycling box，" said Mom．
"Well， they are rubbish to us， because we don' t need them anymore． I wash the cans out so that they won't attired insects，" said Mom． "We don' t use some things， but it doesn't mean they have no value． These cans can be melted （熔化） down to make new cans or other things．"
"I didn't think of that，" said Trevor． "Is that why you save all the cardboard（纸板） or newspapers too？"
Mom nodded， "That is also why I save all those vegetable bits， I use them all in our garden．"
"Our teacher told us about projects other classes had done for Earth Day， and she asked for suggestions for our class projects． I can't think of anything． Do you have any good ideas， Mom？" asked Trevor．
Mom wiped （擦） her hands with a towel （毛巾） and thought for a few minutes． "I saw an article in a magazine about wise ideas about recycling． It must be something you will be interested in．"
根据短文内容，选择最佳选项，将其标号在答题卡上涂黑．
（1）What was Trevor's mother doing？
| A． |
She was reading a magazine． |
| B． |
She was washing some old cans． |
| C． |
She was cooking in the kitchen． |
| D． |
She was packing some old newspapers． |
（2）Trevor's mother saves some things EXCEPT in this passage．
| A． |
cardboard |
| B． |
newspapers |
| C． |
vegetable bits |
| D． |
plastic bags |
（3）Which of the following is WRONG according to the passage？
| A． |
We can use old cans to make new cans or other things． |
| B． |
Trevor's teacher wants to get some suggestions for her class projects． |
| C． |
Mom used a towel to dry her hands． |
| D． |
We can know the name of the magazine． |
（4）What will they probably do after the conversation？
| A． |
They will write a new article． |
| B． |
They will throw the cans away． |
| C． |
They will look for the magazine． |
| D． |
They will wash more cans together． |
March 16 is International Sleep Day． Studies have shown that a good night's rest helps us stay healthy， both mentally（精神地） and physically（身体地）． Sleep is probably the best tool we have for memory and learning． A good night's sleep helps to learn better．
But what about getting rest during the middle of the day？ Short periods of sleep after a mid﹣day meal， we call it napping（午睡）， may help our brains work better．
Past studies have shown that napping can help babies and young children learn better． And napping can help brain performance in older adults． Taking a nap may also help this group of peoplefight off age﹣related memory loss． As we all know， the older we are， the more memory we will lose．
The study found that people who took an hour﹣long nap did much better on mental tests than those who did not nap． The hour﹣long nappers also did better on the tests than those who napped for shorter and longer periods． In this study， it seems that the most effective（有效地） nap lasted for about an hour， but not much longer． Keep in mind， however， that these are the findings for those over the age of 65．
And there is a little difference between the old and young people． Doctor Michael Twery notes that an hour long nap may be too long for young， healthy adults． And 30 minutes is enough to remove the pressure to sleep and will help them feel more awake（清醒的）． If they nap longer， they will get trapped into（受困于） deep sleep， which can be hard to get out of．
If you have trouble falling asleep at night， limit（限制） your daytime nap to under 45 minutes． Also nap before 3 p．m． in the afternoon．
（1）When is the International Sleep Day？
| A． |
January16． |
| B． |
February16． |
| C． |
March 16． |
| D． |
May 16． |
（2）This group of people refers to（指的是） ．
| A． |
babies |
| B． |
young children |
| C． |
older adults |
| D． |
young， healthy adults |
（3）People who are over the age of 65 should spend napping．
| A． |
10 minutes |
| B． |
30 minutes |
| C． |
under 45 minutes |
| D． |
about an hour |
（4） 30 minutes is enough for the young， healthy adults to remove the pressure and help them feel more awake．
| A． |
Napping |
| B． |
Walking |
| C． |
Swimming |
| D． |
Dancing |
（5）If you ， you should reduce your nap time and nap before 3 p．m． in the afternoon．
| A． |
are having trouble seeing |
| B． |
have trouble making decisions |
| C． |
have trouble remembering things |
| D． |
have trouble falling asleep at night |
What should we do if one of our classmates suddenly falls ill or gets hurt？Here are some steps you should follow．But always remember to look for medical care after first aid（急救）if the wound is serious．
Broken bones（骨头）：Take away clothing from the wound．Use an ice pack．Don't move the hurt body part while waiting for the doctor to arrive．
Animal bites（咬伤）：Wash the bite area with soap and water．Pack the wound with a clean cloth if it is bleeding．If the bleeding has stopped，cover the area with a bandage and take the person to the hospital．Make sure you remember what kind of animal it is so the doctor can find the right way to treat him or her at once．
Fainting（昏厥）：Have him or her lie with feet lifted a little．Don't move the body if you think there might be wounds from the fall．Make sure he or she can breathe and let in fresh air．Clean the person's face with a cool cloth．
Nosebleeds：Have the person sit up with his or her head tilted（倾斜）forward a little．Do not have the person tilt his or her head back because this may cause heavy breathing or coughing．Pinch（捏） the lower part of the nose for at least 10minutes．
46．What should we do first when an animal bite happens？
| A． |
Put an ice pack on the wound． |
| B． |
Wash the bite area with soap and water． |
| C． |
Try to stop the bleeding with a clean cloth． |
| D． |
Take the hurt person to the hospital． |
47．When dealing with the problems of ，we shouldn't move the hurt．
| A． |
broken bones and animal bites |
| B． |
animal bites and nosebleeds |
| C． |
broken bones and fainting |
| D． |
fainting and nosebleeds |
48．Which of the following is not right when a boy's nose bleeds？
| A． |
Let his head not tilt back． |
| B． |
Let his head tilt forward a little． |
| C． |
Let him sit up． |
| D． |
Pinch his nose for less than 10minutes． |
49．Which part of a magazine may the passage come from？
| A． |
Lifestyle． |
| B． |
Health． |
| C． |
Sports． |
| D． |
Education． |
50．What's the main idea of the passage？
| A． |
First aid for some accidental wounds． |
| B． |
Steps of looking for medical care． |
| C． |
Advice on ways not to get hurt． |
| D． |
Ways to ask for help in getting hurt． |
When people talk about air pollution, they are usually thinking about outdoor air 1 . But do you know that there is 2 air pollution inside homes, offices, hotels and other buildings? The air in your home can be 2 to 100 times more polluted than the air outdoors! In fact, some American doctors say that 50% of illnesses have 3 to do with polluted indoor air.
A lot of pollution comes from indoor activities 4 smoking and cooking. As most people 5 about 80-90% of their time inside buildings, it is important to take indoor air pollution seriously, too.
Air pollution influences our health 6 . When the air is polluted, not only young children and old people suffer from it, 7 people with health problems suffer as well. Indoor air pollution can 8 people's eyes, noses and throats. Air pollution, both indoor and outdoor, can also lead to lung cancer（肺癌）and heart disease! In the great London fog in 1952, 4,000 people died in a few days 9 the pollution! 10 is said that half a million young children and women die each year in India because of indoor air pollution!
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完形填空
Some people think that all wild animals are dangerous. But in fact, very few of them will 1 a man if he leaves them alone. If you meet a lion or an elephant, I guess you will 2 ; but even a lion will avoid(躲避)a man if it is not very 3 . Lions and tigers only kill and eat men when they have grown too old and too weak to catch their usual 4 , such as deer and 5 small animals. If you see a wild elephant, perhaps you will be 6 . However, elephants usually run away at once if you don’t attack them. Some animals get very frightened if they only smell a man, some stand and look at him for a moment 7 they run away, some take no notice at all but walk away 8 in another direction. Wild animals only attack 9 when they are afraid that people want to harm(伤害) their 10 , or when the hunters shoot at them and make them angry.
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More than 50,000,000 people live in the rainforests of the world and most of them do not hurt the forest they live in. They eat the fruits that grow on the forest trees, but they do not cut them down. They kill some animals to eat, but they do not destroy them.
When we cut down the rainforests, we destroy these forest people, too. In 1900, there were 1,000,000 forest people in the Amazon forest. In 1980, there were only 200,000.
The Yanomami live along the rivers of the rainforest in the north of Brazil. They have lived in the rainforest for about 10,000 years and they use more than 2,000 different plants for food and for medicine. But in 1988, someone found gold in their forest, and suddenly 45,000 people came to the forest and began looking for gold. They cut down the forest to make roads. They made more than a hundred airports. The Yanomami people lost land and food. Many died because new diseases came to the forest with the strangers.
The Yanomami people tried to save their forest, because it was their home. But the people who wanted gold were stronger.
Many forest people try to save their forests. Chico Mendes was famous in Brazil because he wanted to keep the forest for his people. “I want the Amazon forest to help all of us-forest people Brazil, and all the Earth,” he said. A few months later, in December 1988, people who wanted to cut down the forest killed Chico Mendes.
In Borneo, people were cutting down the forest of the Penan people to sell the wood. The Penan people tried to save their rainforest. They made blockades across the roads into the forest. In 1987, they closed fifteen roads for eight months. No one cut down any trees during that time.
In Panama, the Kuna people saved their forest. They made a forest park which tourists pay to visit.
The Gavioes people of Brazil use the forest, but they protect it as well. They find and sell the Brazil nuts(坚果) which grow on the forest trees.The number of the people living in the Amazon forest in 1980 was _______ of that in1900.
| A．half | B．one-third | C．two-fifths | D．one-fifth |
The people who _______ have destroyed the rainforest of the Yanomami.
| A．pick fruits and kill animals to eat |
| B．use plants for food and medicine |
| C．have lived there for about ten thousand years |
| D．made the roads and the airports |
Those people built roads and airports in order to ________.
| A．carry away the gold conveniently |
| B．make people there live a better life |
| C．stop spreading the new diseases |
| D．develop the tourism(旅游业) there |
We can infer the underlined word blockades probably means:
| A．包围 | B．障碍 | C．街区 | D．通道 |
From the passage, we learn that _________.
| A．we need wood to build houses, so we have to cut down trees |
| B．the rainforest people have done something to protect their home |
| C．to humans, gold is more important than trees |
| D．we mustn’t cut down any trees or kill any animals |
When Oakland High School in California moved into a new building, the students and teachers noticed a strong smell. Then almost half of the students began to have a headache and a cough. Experts (专家) came to find the cause of the sickness. Finally, they discovered that the air in the building was not safe to breathe. They were surprised to find out that the desks and chairs in the school library caused the trouble. These desks and chairs were made of particleboards(合成板). This kind of board is cheap. It is made of very small pieces of wood held together with a chemical (化学物质). This is just one example of a modern problem that is most common in cities—indoor air pollution(污染).
People have worried about air pollution for many years, and the government has spent lots of money trying to clean up the air of big cities. But now we found that we are still breathing unhealthy air. A study shows: Indoor air pollution is almost two to five time(倍) worse than outside pollution. So remember to open the windows and don’t stay too long in modern buildings with windows closed. Many students and teachers _________ after they moved into the new building.
A were very happy and excited B. didn’t feel well C. felt tired because of hard work The experts came to Oakland High School for _________.
A staying with the sick students and teachers
B. taking away the desks and chairs
C. finding the cause of the illness Which of the following is Not true according to the passage?
A. The indoor air pollution is common in cities.
B. We needn’t worry about the outside pollution.
C. The air in this school library was not safe to breathe. A study shows that indoor air pollution is _________.
A even worse than the outside pollution B. not so bad as outside pollution
C. the only problem to worry about What’s the main idea of the passage?
A Never move into a new building B. We shouldn’t buy cheap desks and chairs
C. The indoor air pollution is a big and common problem.
After spending years searching for a planet with life, scientists may have found one. In September 2010, a team of US scientists discovered an Earth-sized planet called Gliese 581g. It has a surface temperature neither too hot nor too cold for liquid（液态）water. Scientists think there is a chance that the planet could have life.
The planet Gliese 581g goes around a star called Gliese 581, which is about 20 light-years from Earth. That is about 194 trillion（万亿）kilometres －500 million times farther away from us than the moon.
A spacecraft traveling at a one-tenth of the speed of light would reach Gliese 581g within about 220 years. A human can’t live that long, but robotic explorers could make the job easier. However, our fastest spacecraft don’t come anywhere near that one-tenth light-speed mark.
At present, scientists don’t know what the surface might be like on Gliese 581g. What they know is that the planet is at the sight distance from its star to have liquid water. It’s also at the right distance to have an atmosphere that could protect the water if it is on the surface.
Although spacecraft won’t be getting there anytime soon, one way to look for life on Gliese 581g is to turn our radio telescopes（望远镜）towards the planet and search for radiation（放射）. By studying the radiation, scientists would find out about the chemicals（化学物质）around the planet and discover it Gliese 581g has an atmosphere. If it has one, studying the atmosphere would give us a good idea if the planet has life or not. But it’ll probably be many years before we can do this properly.
People have been arguing about whether there is alien life on Gliese 581g. Any discussion about alien life is just guessing at this point, according to its discoverers. What did scientists find in September 2010?
| A．A planet with water. | B．A planet similar to the earth. |
| C．A planet without life. | D．A planet near the earth. |
According to the article, Gliese 581g ________.
| A．is at the right distance from its star | B．moves around the earth |
| C．is as far away from us as the moon | D．can be reached in about 220 years |
Paragraph 5 is mainly about ______.
| A．the possibility of living on Gliese 581g |
| B．the kinds of chemicals around Gliese 581g |
| C．the way of looking for life on Gliese 581g |
| D．the aim of studying the radiation on Gliese 581g |
Which of the following is the best title for the passage above?
| A．Gliese 581g, a Likely Living Planet | B．Gliese 581, a Likely Living Planet |
| C．Gliese 581g and Its Star | D．Gliese 581g and Radiation |
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