E-book is short for electronic( 电子的) book. It is usually read on personal computers. Some
mobile phones can also be used to read e-books.
Earlier e-books were written for a specific group of readers and were about only a few subjects. With the development of the internet, knowledge and answers to a lot of questions mainly come from e-books. This is why the e-book business is increasing quickly
E-books have many advantages. First, they save time. We don’t need to go to a bookstore to buy books, besides, we can find the topic we want to know about on the Internet, and then we can quickly get many e-books on similar topics. Second, e-books save money. Some e-books cost a little money, and there are millions of e-books on the Internet that we can get for free. Third, more trees are saved because e-books don’t need to be printed(印刷) on paper. Fourth, e-books make reading more convenient. You can carry a whole library of hundreds of books with you in a small computer or any e-book reader (电子阅读器) without worrying about their weight.
But e-books have certain disadvantages. They need a personal computer or an e-book reader and the information can be lost if its file format (文件格式) is not supported or changed in the reader’s computer.
However, e-books provide us with a new way of reading. That is good.
根据短文内容，选择最佳答案。Why is the e-book business increasing quickly? Because _________.
| A．earlier e-books are about only a few subjects. |
| B．people don’t like to read any paper books any more. |
| C．most e-books have been written for a specific group of readers. |
| D．the development of the Internet makes e-books more useful. |
How many advantages do e-books have according to this article?
| A．Three | B．Four | C．Five | D．Six |
Which of the following is true according to this article？
| A．E-books can’t be red on mobile phones. |
| B．All the e-books on the Internet cost lots of money. |
| C．E-books can make reading more convenient. |
| D．You can’t read e-books without a personal computer. |
What is the disadvantage of the e-books?
| A．You’ll lose the information if its file format is not supported. |
| B．You can carry hundreds of books in an e-book reader. |
| C．You can buy cheap e-books anywhere. |
| D．You can read e-books at any time. |
The author mainly tells us __________.
A. you don’t need to buy paper books in a bookstore if you read e-books.
B. the information can be lost if its file format is changed.
C. the development of e-books can help save the environment.
When the Audet family turns on the lights at Blue Farm, they are using electricity that comes from cows—cow manure (粪肥), to be specific.
Cows produce a lot of wastes. One cow can create 30 gallons of wastes each day. Now imagine the output of over 1,000 cows at Blue Farm. That’s really a big amount.
When farmers clean their barns, they put the wastes in a big heap, and spread some of them on their fields for fertilizer(肥料). But now places like Blue Spruce Farm have a new way of using cow wastes. They use them to produce electricity.
Here’s how it works: A big machine moves back and forth cleaning the barn floor. “The cows aren’t bothered,” says Marie Audet. “They are animals of habit; they get used to it, and just lift one foot and then another to let it go by.”
The machine pushes the manure into a big 600-gallon tank like a small swimming pool. The tank is called a digester (化粪池) because what happens there is just like what happens inside a cow: Bacteria(细菌) get to work and continue to digest the manure.
Methane gas (甲烷、沼气)in the atmosphere is known as a “greenhouse” gas because it keeps heat just like a greenhouse does, causing our planet to warm up. That’s an environmental concern. But the digester has a good result. Its gas is kept and used to power electric generators (发电机).
At Blue Farm, the generators make enough electricity to power 400 homes. The Audet family sells the extra electricity they can’t use themselves.We learn from the text that the Audet family is using cow wastes to ______.
| A．make electricity | B．produce fertilizer | C．build their farm | D．feed the cows |
How are the cow wastes collected into the digester at Blue Farm?
| A．Marie Audet does the work | B．The job is done by machine |
| C．The cows lift the cow wastes | D．Bacteria get to work on them |
According to the passage, which of the following is changed into electricity?
| A．The power of moving water. | B．The heat of burning coal. |
| C．The power of sunlight. | D．The heat of the methane gas |
The new way of using cow wastes at Blue Farm might be best described as ______.
| A．reducing | B．saving | C．recycling | D．changing |
What is the main purpose for writing the passage?
| A．To introduce a new way of making electricity | B．To explain how a new energy works better |
| C．To show a new rebuilding plan for a big farm | D．To explain the reasons for green house effect |
“Visitors to the 2010 World Expo in Shanghai will be able to go sightseeing in super cool cars with no drivers,” Shanghai city government speaker said recently.
When the six-seat car was shown to the public, it interested many people. “The car will help visitors feel what high technology（技术）is and help them enjoy the tour of the World Expo site,” said a teacher from Tongji University. The car, 4.5 meters long, 1.7 meters wide（宽）, and 1.6 meters tall, runs along a white line. The car costs around 300,000 yuan to build and can reach a top speed of 50 kilometers per hour.
According to the researchers, visitors will be able to driver the car anywhere in the World Expo site by pressing a button（按按钮）. If they want to get off or stop the car, all they need to do is just to press the button again.
“People can rent one of these cars for a whole day or just take a ride in it from one place to another,” the teacher said. About 400 to 500 of these cars will be made for the Expo in 2010. the cars will have radar（雷达）to help them get around. They will mainly use solar（太阳能）batteries. And they have no need of drivers and oil（汽油）, these cars will help save energy and human work, and cause no pollution to the environment.The new type of car has _____ seats.
A. seven B. six C. fiveAccording to this passage, which of the following is TRUE?
A. The car can reach a top speed of 50 kph.
B. The car costs about 30,000 yuan to build.
C. The car is 4.5 meters long and 1.7 meters tall.Which of the following is not mentioned in this passage?
A. People can buy this type of car and drive it in the World Expo site.
B. This type of car can save energy and human work, and cause no pollution.
C. People can press the button themselves when they want to get off or stop the car.The title（标题）of the passage is probably “_____”.
A. Radar First Used in Cars
B. Cool Cars with No Driver
C. Tour the 2010 World Expo
Mobile phones and the internet have improved our live in many ways. However, along with improvements, they have also brought a number of worrying problems.
Many car accident are caused by mobile phones. You can use many new mobile phones to get on the internet. This can be very convenient, but some drivers get on the internet while driving. Driving needs all our attention. By looking at their mobile phones and not at the road, these insensitive Drivers are a danger to us all.
Many of the dangers of the internet are well known. Children who visit websites without their parents’ permission sometimes talk to older people they don’t know and put themselves in great danger. People with blogs sometimes post embarrassing photographs of people they don’t know on their websites without permission. There are also people who use the internet to get personal information that we do not want them to have.
Mobile Phone and Internet Safety Tips
If you need to use a mobile phone with you drive use a “hands-free” phone.
In difficult driving situations such as rain or snow, do not use your phone at all.
Do not make very important phone calls while driving. They take your attention off the road.
Tell your children not to talk with anyone they do not know on the internet.
In an embarrassing situation, pay attention to people around you. People will be shy about taking your picture if they know you’re paying attention.
Refuse to give out any information personal information on the internet. Which of these dangers of mobile phones or the Internet is Not mentioned in the passage?
| A．You can have a car accident. |
| B．Someone can post your photograph on the internet. |
| C．Someone can get your personal information |
| D．Someone you do not know can call you. |
A “hands-free” mobile phone is probably a mobile phone that _____.
| A．is free to use | B．can be used without your hands |
| C．can be used with only one hand | D．can be use only in ears |
What advice is given in the passage to stop someone from taking an embarrassing picture of you?
| A．Pay attention to the people around you. |
| B．Don’t give out your personal information. |
| C．Use a “hands-free” mobile phone. |
| D．Wear your camera phone on you belt. |
Which is the best title of the passage?
| A．Internet Problems |
| B．Mobile Phone and Internet Dangerous |
| C．The Development of Mobile Phone and Internet |
| D．The Advantages of Mobile Phone and Internet |
Earthquakes are hard to predict. but do you know what to do before, during and after an earthquake? Here’s some advice:
Before an earthquake It’s necessary to prepare yourself and your family. All family members should know how to turn off gas, water and electricity and know useful telephone numbers(doctor, hospital, police, 119, etc.). Never put heavy things over beds.
During an earthquake It’s important for each of you to stay calm. If you are indoors, quickly move to a safe place in the room such as under a strong table. The purpose is to protect yourself from objects, stay away from windows, large mirrors, heavy furniture and so on. If you’re cooking, turn off the gas. If you’re outdoors, move to an open area like a playground. Move away from buildings, bridge and trees. If you are driving, stop the car as soon as possible, staying away from bridges and tall building. Stay in your car.
After an earthquake Once the shaking has stopped, DO NOT run out of the building at once. It’s better to wait and leave when it’s safe. Check around you and help the people who are in trouble. If your building is badly broken, leave it. If you smell of hear a gas, get everyone outside and open windows and doors. If you can do it safely, turn off the gas. Report it to the gas company.Which of the following is mentioned in the second paragraph?
| A．People should know how to turn on gas. |
| B．People should now how to save water. |
| C．People shouldn’t put heavy boxes over beds. |
| D．People shouldn’t forget the phone numbers of others. |
When an earthquake happens, __________can help you deal with it.
| A．standing still | B．staying calm | C．looking outside | D．moving indoors |
During an earthquake, if you are driving in an open area, you should ________.
| A．speed up your car | B．stop your car and stay in |
| C．slow down your car | D．stop your car and run out |
When the earth stops shaking , you should_________.
| A．check around you first | B．run out of the building at once |
| C．break the windowns and doors. | D．write a report to your company |
You can learn _______after reading the passage.
| A．what an earthquake is like | B．what to do to avoid an earthquake |
| C．how an earthquake happens | D．how to protect yourself in an earthquake |
What do people do with their old, out-of-date but still useful computers? Most people don’t know what to do with them. Many old computers are put away in homes. Many more are simply thrown out with the rubbish.
Some companies are thinking of ways to bring down the number of old computers. Sony has agreed to help recycle old Sony products. Dell, Hewlett-Packard and other companies now also take back some old computers.
In some countries, laws are being passed, too. Computer companies will have to collect and recycle their used products. And 70% of computer waste must be recycled. The idea behind the laws is that computer companies themselves should pay the cost. That will encourage them to make computers that are easier and cheaper to repair and upgrade（升级）.
Yet while many people are throwing away good computers, others cannot afford them at all. Hundreds of organizations are working to solve this problem. They collect and repair old computers. Some also teach others how to repair computers.
The computers then go to schools, charities and people who need them. Giving a used computer to one of these organizations can turn one person’s rubbish into someone else’s useful things—and cut down on waste, too. How do people usually deal with their old computers?
A. They stop using them. B. They give them to others. C. They fix them up. What do some computer companies do to bring down the number of old computers?
A. They don’t do anything about them.
B. They take back some old ones.
C. They donate them to some charities. According to some countries’ laws, what must computer companies do?
A. Collect and recycle most of computer waste.
B. Repair and upgrade old computers.
C. Make much cheaper computers. What may people who can’t afford computers think of the used computers?
A. Expensive. B. Useful. C. Out-of -date. What is the passage about?
A. Repairing old computers.
B. Selling old computers.
C. Recycling old computers.
We talk every day. When we have good news, we like to share it with our good friends and when something terrible happens, we make it known to others soon. But can you imagine that a tree can talk and share hews too? Of course, no tree moves lips and says words just as people do. Strange as it may sound, though, some trees do manage to communicate with each other.
Willow(柳树) trees are the best-known of these trees. When insects(昆虫) begin nibbling(叮咬) a willow tree, the tree sends out a special smell at once. This smell tells the other willows that harmful insects are coming near. All of them quickly make a chemical(化学物质) in their leaves. This chemical is bad to the insects. The insects do not like it and they fly away soon. In this way, the willow trees protect themselves from the insects.
The next time when you take a walk in the woods, maybe the trees are “talking” to each other quietly. And when someone says that trees cannot “talk”, please tell them that even trees give messages to each other, too.Willow trees send messages with _________.
| A．words | B．movements | C．smells | D．sounds |
the underlined word “lips” in the first paragraph means ________.
| A．树干 | B．嘴唇 | C．枝条 | D．手势 |
The passage tells us that some of the trees can ________.
| A．speak just as people do | B．tell stories to others |
| C．communicate with each other | D．kill insects in the woods |
According to the passage, the right order of the following is ________.
a. The willow tree gives out a smell.
b. The willow trees make a chemical in their leaves.
c. Insects fly a way because of the chemical.
d. Insects begin nibbling a willow tree.
| A．d-a-b-c | B．d-b-a-c | C．a-b-c-d | D．d-c-b-a |
As space science develops, man has learned more and more about space. Space is not only amazing but also dangerous. While working in space, spacemen are facing danger as well as success. 
Scientists have found out that the radiation（辐射） is the greatest danger to spacemen in space. When spacemen are working in space, they are in danger of the radiation from the sun and other stars, which is bad for their health. The harm of the radiation won’t be found until their children even grandchildren are born. Some special medicine may work a little, but no really effective medicine has been found so far.
Space rubbish is also thought to be a great danger to spacemen. It’s reported that there were 9,000 man-made things flying in space. About 30% of these are satellites, 10% are spaceships, and the rest are space rubbish. An explosion（爆炸）in space in 1999 made a cloud of 300,000 fragments, each at least 4mm in size. A small piece of these even knocked a spaceship window and caused some damage（损坏）.
Scientists are watching and reporting any possible danger all the time. They are working to deal with space rubbish. Although space is really dangerous, it interests many people on the earth. In the near future, it may become possible for people to spend a few days in a space hotel. We may even choose to leave the earth and live in space in a few years. So we should do something to help improve the space environment. ______ shows the man-made things in space in the correct way.
| A． | B． | C． | D． |
The radiation from the sun and other stars is ______ to spacemen.
| A．good | B．helpful | C．useful | D．harmful |
The underlined word “fragments”means “______”.
| A．碎片 | B．泡沫 | C．烟雾 | D．飞碟 |
The passage talks about _________ kinds of danger in space.
| A．two | B．three | C．four | D．five |
Which of the following is TRUE?
| A．Scientists have found out ways to solve any problem in space. |
| B．Every one of us can have a travel to space in ten years. |
| C．The harm of the radiation may be found in the spacemen’s children. |
| D．Space is really dangerous, so it doesn’t interest anyone on the earth. |
What does it feel like to break a bone (骨头)? It’s different for everyone, but the pain is often sharp (严重). If the break is small, however, the person may not feel much pain at all. If you think that you or someone else has broken a bone, the most important things to do are to stay calm, make the hurt person comfortable, and call the doctor. Do not move the injured body part since movement could make it worse.
To treat the break, the doctor will need to take an X-ray. This gives the doctor the information he or she needs to set (接上) the bone: to put it back to its normal place. If the bone is large or it is broken in more than one place, the doctor may need to use metal pins (钢钉) to set it. After the bone has been set, the next step is usually putting on a cast, the special, hard thing that will keep the bone in place for a month or two.
Your bones are excellent at healing themselves. Broken bones will produce many new cells (细胞) and tiny blood vessels (血脉). These cover both ends of the broken part, and close up the break until the bone is as whole and strong as before. Which of the following is the best title for the passage?
| A．How to Know if a Bone is Broken |
| B．How Broken Bones Heal Themselves |
| C．Common Causes (原因) of Broken Bones |
| D．What You Should Know about Broken Bones |
When someone breaks his bone, the following should be done except ______.
| A．asking the doctor for help | B．comforting the hurt person |
| C．moving the injured part | D．staying calm |
Which is the correct order to treat the break?
a. take an x-ray b. use metal pins to set it c. put it back to its normal place d. put on cast
| A．a→b→c→d | B．a→c→b→d | C．a→d→c→b | D．d→a→b→c |
The underlined word “heal” in Paragraph 3 is closest in meaning to “______”.
| A．break again | B．become worse | C．wound or hurt | D．become healthy again |
Where would you probably read this passage?
| A．In a story book. | B．On a poster. | C．In a health care book. | D．In a chemistry book. |
Every time you turn on the television or take a ride in a car ,you could be adding to a problem called acid rain(酸雨). In this article, you’ll learn how acid is created, and how it affects us, and more importantly, what we all can do to prevent it.
How is acid rain created?
When people use fuels(燃料), such as coal and gasoline, poisonous gases are give off. When these gases mix with rain, acid rain forms. Many power stations burn fuels in order to creat the electricity(电) that we use in our homes and offices every day. Cars and trucks also send these gases into the air when they burn gasoline .When rain mixes with these gases, harmful things called acids form. This is acid rain.
How does acid rain affect us?
Acid rain damages(毁坏)everything that it touches. It poisons our rivers, ponds, lakes, and oceans along with all the life in them. It pollutes our soil and crops, harms trees, and can even kill fish and plants. Acid rain also eats away at buildings.
How can we prevent acid rain?
We need to cut down on the pollution that gets into our air. Turn off lights, television, and other electrical appliances if you are not using them, Walk or take a bike whenever possible. If you are travelling a long distance, take a bus or train to save fuel.
As research shows, acid rain harms our environment. But people everywhere can take small steps now to help protect our environment for future generations.When power stations burn fuel,_______.
| A．acid rain form | B．air pollution is caused |
| C．noise pollution is caused | D．acid rain gets heavier |
According to the article, acid rain affects us _______.
| A．suddenly | B．slightly | C．seriously | D．immediately |
What advice does the article give us?
| A．Go to school on foot or by bike if we can. |
| B．Go to bed earlier in order to use less electricity. |
| C．Travel by bus to prevent acid rain. |
| D．Turn off the television on rainy days. |
What is the best title of the article?
| A．Preventing Acid Rain | B．Forming of Acid Rain |
| C．Acid rain, Heavy Rain | D．Acid Rain, Killer Rain |
Tony: These days, the word “clone” has appeared very often in the newspapers. Do you know its meaning?
Lana: I read a report. It said that Dr. Ian Wilmut successfully cloned a lamb* named Dolly from a grown-up sheep. So people call him the “father” of Dolly.
Tony: In fact, the word “clone” means to produce the “same” animal by taking cells* from a
grown-up one. I think, if we know how to do cloning, we need only to keep a small number
of sheep, cows or horses.
Lana: What’s more, these days some people even want to clone humans. They have asked: Can we
clone ourselves?
Tony: It seems interesting. But do you think it possible to do that?
Lana: No, impossible! First, I think we cannot clone a dead person, because the cells in his body are dead already.
Tony: Then can we clone a living person?
Lana: Again no! You might clone yourself one after another, but it is only a copy, not a real you. It is only something, not a “human”.
Tony: Well, you mean that it is not a real human.
Lana: True enough! I think Dr. Wilmut would most like to make better animals, and it has nothing to do with human cloning.The word “clone” means_________________.
复制 B 克隆 C 抄袭 D 制造Dolly was the name of _______.
A. the father of a sheep B. a famous scientist
C. . a grown-up sheep D a sheep that was cloned Lana says Dr. Ian Wilmut is the “father” of Dolly. Here, she means __________.
Dr. Ian Wilmut was the first man to clone a sheep in his lab
Dr. Ian Wilmut gave Dolly a new life
Dr. Ian Wilmut took care of Dolly like a father
D. Dr. Ian Wilmut has a daughter whose name is Dolly From the conversation, may be clone in our life.
A a tree B a person C an elephant D an orange According to the conversation, we know about .
Scientists have successfully cloned humans.
Dr. Wilmut likes to do human cloning.
C. Cloned animals are better than humans.
D. Lana doesn’t think humans shouldn’t be cloned.
Laboratory work is your chance to learn science firsthand. It can be fun but you must be careful to prevent injury. Listen closely when your teacher reads and explains the rules before your first lab lesson.
LABORATORYRULES
Throughout the lesson
·Do not enter the science lab without the teacher’s permission.·No food or drinks are to be alowed in the science lab.
Before the Experiment
·Read al instructions carefuly before every experiment.
·Prepare al apparatus（仪器）and arrange them so that you wil not knock them over while doing the experiment.
During the Experiment
·If you are unsure of how to use any apparatus or how to operate, ask your teacher for help.·Never smel or taste chemicals unless your teacher gives permission.
After the Experiment
·Wash al apparatus after use and return them to the places where they were.
·Throw waste materials in proper waste baskets.
First Aid
·Report al accidents to your teacher immediately.
·If you spil（ 溅 出 ）any chemicals onto your body or clothing, wash with plenty of water and report to your teacher. Your teacher wil probably tel you the rules above _____ the first lab lesson.
| A．before | B．since | C．during | D．after |
Before every experiment, you should _____.
| A．taste the chemicals first |
| B．clean al the apparatus |
| C．read al instructions carefuly |
| D．report al the accidents to the teacher |
When you are not sure how to use al apparatus, _____.
A. try them on your own
B. read the rules carefuly
C. ask your teacher for help
d. put them back It is clear that you can _____.
| A．bring food into the lab |
| B．enter the lab anytime |
| C．smel chemicals as you like |
| D．learn science directly in the lab |
If you get chemicals on the clothing, you can find ways to solve it in the part _____.
| A．Before the Experiment |
| B．First Aid |
| C．During the Experiment |
| D．After the Experiment |
Everyone has got two personalities (性格) —the one that is shown to the world and the other that is secret and real. You don’t show your secret personality when you’re awake because you can control yourself, but when you’re asleep, your sleeping position shows the real you. In a normal night, of course, you often change your sleeping positions. The important position that best shows your secret personality is the one that you go to sleep.
If you go to sleep on your back, you’re a very open person. You normally trust people and you are easily influenced by new ideas. You don’t like to make people unhappy, so you never express your real feelings. You’re quite shy and you aren’t very confident.
If you sleep on your stomach, you are a person who likes to keep secrets. You worry a lot and you’re always easily becoming sad. You never want to change your ideas, but you are satisfied with your life the way it is. You usually live for today not for tomorrow.
If you sleep on curled up (蜷缩), you are probably a very nervous person. You have a low opinion of yourself and often protect yourself from being hurt, so you are very defensive. You’re shy and you don’t usually like meeting people. You like to be on your own.
If you sleep on your side, you have usually got a well-balanced (平衡的) personality. You know your strengths and weaknesses. You’re usually careful. You have a confident personality. You sometimes feel worried, but you don’t often get unhappy. You always say what you think, even if it makes people angry.You may find the passage in_____.
| A．a science magazine | B．a guide book |
| C．a sports newspaper | D．a story book |
When does the sleeping position best show your secret personality?
| A．In the daytime. | B．At the beginning of sleep. |
| C．At night. | D．During the deep sleep. |
Tina hardly tells her secrets to her friends. She probably goes to sleep _______.
| A．on curled up | B．on her stomach |
| C．on her back | D．on her side |
What does the word "defensive" mean in the passage?
| A．易怒的 | B．攻击性的 | C．外向的 | D．有戒心的 |
What does the passage tell us?
| A．Sleeping on your side is the best way of sleeping. |
| B．Changing positions will cause sleeping problems. |
| C．Sleeping positions show people’s secret personalities. |
| D．Enough sleep makes people look better and healthier. |
A kind of little cars may be seen in the streets in the future. People will like this kind of small cars better than the big ones. The car is as small as a bike. But it can carry two people in it. Everybody can drive it easily, just like riding a bike. Even children and old people can drive them to schools or parks.
If everyone drives such cars in the future, there will be less pollution in the air. There will be more space for all the cars in cities, and there will also be more space for people to walk in the streets.
The little cars of the future will cost less money to buy and to drive. These little cars can go only 65 kilometers an hour, so driving will be safer. The cars of the future will be fine for going around the city, but they will not be useful for a long trip.
This kind of cars can save a lot of gas. They will go 450 kilometers, then they have to stop for more gas.
They are nice cars, aren’t they? If you drive this kind of little cars for four hours, you can probably go at most.
| A．260 kilometers | B．65 kilometers |
| C．450 kilometers | D．130 kilometers |
Why do these little cars have to stop after going 450 kilometers?
| A．For more water. | B．For more gas. |
| C．To have a rest. | D．To charge (充电) |
Which of the following statements is NOT true?
| A．Driving big cars can make the air dirtier. |
B．The little cars can make more space for other cars and people. |
C．These little cars will be useful for a long trip. |
D．This kind of cars can save much gas. |
阅读短文，根据短文内容回答问题。（共10分，每小题2分）
We need to be responsible for our environment. Being a frugal consumer(节俭的消费者) is one way to help. But, what exactly does that mean?
Use It Up
You can use things up instead of wasting them. Squeeze that last bit of toothpaste out of the tube. Use the last little piece of soap. Don't throw away any bits of the biscuit at the bottom of the box.
Wear It Out
You do not always need to have new things. Suppose your sneakers have broken laces, but they still fit you. Repair them and wear them longer. You don't have the latest iPhone until the old one doesn't work anymore. Then you can get a new one. Think twice before replacing something that still works.
Make It Do
When something you want is not on hand, look for something else that you already have to take its place. Suppose you are packing your lunch for tomorrow and want a butter sandwich. You are out of butter. Have a cheese sandwich instead so that you can use all of the cheese. Learn to fix broken toys instead of just throwing them away. With a little thought, you can make something do, instead of buying something new.
Do Without
Think about all those things that you would like to have. Do you really need them? How long will you really play with that new toy you saw on TV? Making the things that we want uses up your world's resources(资源). And, getting rid of the things we don't want any more takes up even more resources and space.
Do we need to be responsible for our environment?
How do we deal with the last little piece of soap?
When do we need to get a new iPhone?
What should we do when something we want is not on hand？
What does the writer want to tell us?
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