It may seem easy to say that plants and animals are different. Any child can tell the difference between a tree and a dog. But those differences are far deeper than just what they look like. The cells (细胞) that plants are made up of are different. In other words, the cell wall of plants has something special. 
First of all, it's important to find that not all plant cells have a cell wall. Besides, there are many differences of a cell wall based on the kinds of plant. The following is meant to be what a plant cell wall is like.
The cell wall of a plant is on the outside of the cell membrane (膜). It is usually hard and cannot be bent easily, but the degree of flexibility (韧性) of the cell wall is different. It is based on the special use that the cell has in keeping the plant alive. Cells that make up the trunk of a tree are clearly less flexible than cells on a leaf.
Cell walls act in many ways. They serve to protect the plant. They provide support, as well as help in the movement of chemicals and wastes into and out of the cell. More importantly, they control the water that goes in and out. Plants must have good water controlling systems (系统), allowing them to keep water during dry seasons, and get rid of unnecessary water. Plants can't walk around to find water, so being able to control water is very important.
So there you have it , what a plant cell wall is. Of course, there are many other things that are not talked about here. Knowing more about plant cell wails requires further study and research.From the first two paragraphs we can find that _____.
| A．all plants have a ceil wall |
| B．plant cells and animal cells are the same |
| C．different kinds of plant have different cell walls |
| D．there are no differences between the cells of a tree and a dog |
The underlined word "bent" in the passage is the closest in meaning to _____.
| A．变形的 | B．防水的 | C．太阳灼伤的 | D．表皮破损的 |
Cells in the trunk of a tree are _____ those on a leaf.
| A．as flexible as | B．not so flexible as |
| C．more important than | D．less important than |
What is the most important use of a plant cell wall?
| A．To protect the plant. | B．To provide support. |
| C．To move chemicals and wastes. | D．To control the water. |
The first telephone cards, produced in 1976, were Italian. Five years later the first British card appeared, and now you can buy cards in more than a hundred countries. People usually start collecting cards because they are small and light and you do not need much space for them. It is also a cheap hobby for beginners, although for some people it becomes a serious business. In Paris, for example, there is a market where you can only buy telephone cards, and some cards cost up to ￡4,000.The first Japanese card has a value of about ￡28,000. Most people only see cards with prices like these in their collectors’ magazine. When were the first Italian telephone cards produced?
How many countries can produce telephone cards now?
Where can we find a market to buy telephone cards?
What is the price of the first Japanese telephone card?
In which magazine do most people see cards with prices?
Steven Park and his wife Susan were having financial(财政) problems. One day, they each decided, without telling the other, to buy lotto ticket(彩票). Before buying these tickets, they had never spent money on the lotto. They both used numbers that were their anniversary(周年纪念) date and address. That night, they were watching the news on TV, and the winning numbers were drawn. Soon after hearing the numbers, they started jumping up and down. They were shocked(震惊) to find out that they each held a winning ticket! The ticket won＄450,000.Why did the parks buy a lotto ticket?
What number did the Parks use?
Where did the Parks get the news that they won?
When did the Parks start jumping up and down?
How much did the Parks win?
阅读短文，然后根据内容回答所提问题。
What’s the name of Independent boy’s school?
How long did Open Evening last?
Who is the Mrs Norton?
On which day was 6th July, 2007?
What do you know about T01926 776 400?
If you’re into sports, you’ve seen it happen—tennis players jump over the net to shake hands after a hard match; football players exchange jerseys（运动衣）after ninety minutes of knocking each other around; even boxers touch gloves at the beginning of each round. Players in every event, from spelling bees to golf（高尔夫球），act in this way. It’s all part of sportsmanship（体育精神），a great tradition in sports and competition. It means playing and being calm all through the match.
Everyone feels great when they win. In the last few years, you might see some players celebrate a goal（进球）with a long victory dance or talk big about their ability. However, it’s always hard for people to say in public that they made a bad play. Good sportsmanship is what they really need. It’s the golden rule of sports.
Good sportsmanship means that you play by the rules, talk politely to everyone during games and stay cool even when you lose the game. At the school sports meeting, for example, it’s more important for you to know how to work as part of a team and cheer your teammates on. That may help you enjoy more success at your future work. In competition—as in life—you may not always win, but believe me, sportsmanship will help you get through, and there is always the next match.What match do you know will last ninety minutes?
A. Tennis. b. Football.
C. Golf. D. Spelling.The underlined word “bees” in the passage means .
A. fly. b. competition.
C. guess. D. research.Why do you think good sportsmanship is really important?
A. It’s all part of sports.
b. It’s all part of celebration.
C. It’s the golden rule of sports.
D. It’s how to stay cool. Winning the game will make it possible for players to .
A. celebrate a goal. b. exchange jerseys.
C. shake hands. D. feel great .The passage mainly tells us that sportsmanship gets you through no matter whether .
A. you win or lose. b. you play or learn.
C. you are happy or not. D. you feel hard or not.
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.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.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.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.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.A chimney can be a useful air conditioner but it used to cause .
A. pollution. b. accident. C. noise. D. techniques.
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