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What is the sky(天空)? Where is it? How high is it? What lies above it? These questions are hard to answer, aren’t they?
Is the sky blue? The sky has no color. We know that there is air around the world. When planes fly, they need air to lift their wings(翼) . Planes cannot fly very high because when they go high, the air gets thinner. If we go up about 1,200 kilometers from the earth, we find there is no air.
Perhaps(也许) we can answer some of our questions now. The sky is space(空间). In this space there is only the sun, the moon and all the stars.
6.What is the sky?
A. It’s the clouds B. It’s space. C It’s air D It’s nothing
7. The sky _____
A. is blue B. is white C. is black D. has no color
8. Planes cannot fly very high because _________.
A. the air becomes thinner B. the flying machine is not good
C. people will be afraid if the planes fly too high D. it is not necessary for planes to fly so high
9 If we go up about
1,200 kilometers from the earth, we find ___________.
A. there is more air B. there is less air C .there is nothing but air D there is no air
10. In space there is _________.
A. nothing B. air everywhere C. everything D. only the sun , the moon and all the stars
Apart from the social advantages, social networking sites can be used to record school research, develop artistic talents and experiment with other forms of subject creation. They provide a way to communicatewith others who share the same interests and to get helpful advice on ongoing projects.
Along with these advantages come some dangers. For example, most social networking sites are open to all, especially MySpace, which is the most popular social network among teens in America. It means that they could be put in unpleasant and frightening situations.
A greater danger is that teens may become objects of the people with secret purposes. The secrecy of some social networking sites makes it easy for dangerous people to find young teens and invite them into dangerous conversations. It’s easy for them to pretend as teens and draw children into dangerous real-world communication as well. Then further hurt might be on its way.
Another danger is identity stealing, which can happen when teens share too much information about their names, dates of birth and locations.
Therefore, it’s very important to make sure teens are safe when they use social networks.
Many of the same rules that work for online chat work for these sites:
※Don’t use your real name.
※ Don’t give out personal information to people you don’t know. A last name and a town
are enough for a bad guy to find where you are.
※ Don’t believe that people are who they say to be.
※ Immediately end any communication that makes you uncomfortable and report it to a
parent.
Only if you are sure of your safety, can you enjoy the fun brought by social networking. Besides, trying to deal with all problems on your own can lead to terrible results. Remember, asking your parents or school officials for help doesn’t mean you are unable to do anything but wiser than many others.
【小题1】How many dangers of using social networks are mentioned in the passage?
| A．2. | B．3. | C．4. | D．5. |
| A．students could be put into unreal situations on the Internet |
| B．teenagers are facing unknown dangers on the social networks |
| C．Internet provides more social websites to American teenagers |
| D．social networks are very popular among teenagers in America |
| A．the dangers are similar when chatting online and surfing social networks |
| B．more than half American teenagers aged from 12 to 17 use social networks |
| C．teens who ask for help are wiser when meeting problems on social networks |
| D．there are more disadvantages than advantages for teens to use social networks |
1) DIY, which means Do It Yourself, is quite popular in UK. Lots of stores and supermarkets sell DIY things. TV programs show people how to DIY.
2) English people like DIY. There is a saying in UK----“As Englishman’s home is his castle”. Huge numbers of people spend their holidays making their homes beautiful “castles”. If there is anything that needs fixing around their homes, such as painting the walls or putting in a new shower, they will do the jobs themselves. They share DIY experience with their friends. More and more people have discovered the joy of DIY. Sometimes people also DIY for saving money. With the economic downturn at present, many people cannot afford a big house. They are looking at how they can make their house better without spending a lot of money. It is not surprising that DIY is so popular.
3) DIY can be difficult. There is a huge market for DIY furniture which people need to get together themselves with a few basic tools. However, people often find it not easy to build a piece of furniture because they can’t understand the instructions. Sometimes the instructions are simple and clear, but the furniture itself is difficult to build. One thing is for sure, though most DIY projects are started with the best intentions. Many of them may not get finished. DIY can also be dangerous. For example, anything electrical should be done by a professional worker. Unluckily, many people don’t care about this warning and put themselves in danger. It is reported that in just one year over 230,000 people were hurt while doing DIY in UK, including 41,000 who fell off ladders.
4) Therefore, DIY can bring us fun and help us save money, but it is not always as easy as it is thought to be if we bite off more than we can chew. Maybe factories should make products that are easier and safer for us to DIY.
【小题1】根据短文内容完成句子填空（每空一词）
In the first paragraph, we can know ___________ ___________ DIY is in UK.
【小题2】根据短文内容完成句子填空（每空一词）
The second paragraph tells us ___________ ___________ why people like DIY.
【小题3】根据短文内容完成句子填空（每空一词）
The examples in the third paragraph show that DIY can be ____________ and ___________.
【小题4】把短文中的划线句子翻译为汉语。
___________________________________________________________________________
【小题5】在文中找出下面句子的同义句，并抄写在横线上。
We do something that is much too difficult for us.
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What will the house of the future look like? Could it have gardens on its walls, or a pool with fish for dinner? Architects believe that they are all possibilities. The only thing for sure is that the houses will be as green as possible.
The tree house
Many architects in the world would like to build a “tree house.” Like a leaf, the surface of the house collects sunlight during the day. The energy can be used to heat water, produce electricity, and even create fresh air for the home. The “root” (根) of the house is deep under the ground. It uses the soil (土壤) to the home’s temperature.
The Lizard house
Like a lizard (蜥蜴), changing color with the weather is the most important design of a lizard house. When it’s in the bright sun, the cover of the house will turn dark to protect it from strong heat. During dark days, it turns white and takes in as much light and heat as possible to produce energy.
Meals at home
This design is perhaps as much about the future of food production as architecture (建筑风格). It has gardens on the outside wall of the house. People can plant tomatoes, carrots and green tea on them. So every day in the morning, you just need to walk outside and collect your meals.
Learning from the past
Looking to the future isn’t the only way to be green. Sometimes, ancient techniques (古老的技术) can also help cut down energy use. For example, a chimney (烟囱) can be a useful air conditioner because it is easier of hot air to flow out at the chimney.
【小题1】What is the best title (标题) of the passage?
A. Green house of the future.
b. The greener, the better.
C. How to build green houses.
D. Changes of the houses.
【小题2】We can heat water, produce electricity or create fresh air for the home .
A. with the root of a leaf.
b. with the energy from sunlight.
C. with the soil under the ground
D. with gardens on its walls.
【小题3】What will happen to the cover of the lizard house when it’s in the bright sun?
A. It will take in light.
b. It will produce energy.
C. It will turn dark.
D. It will turn white.
【小题4】The passage seems to tell us that meals at home in the future .
A. will be more delicious.
b. need more cooks.
C. cost as much as possible.
D. will be greener.
【小题5】A chimney can be a useful air conditioner but it used to cause .
A. pollution. b. accident. C. noise. D. techniques.