Little Smart or Xiaolingtong is becoming more and more popular in China. But you can use it only in your city. If you go to another city, it will have no use. It looks like a mobile phone, but the ser 题目和参考答案——青夏教育精英家教网—

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.
小题1: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

小题2:The underlined word "bent" in the passage is the closest in meaning to _____.

小题3: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

小题4: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.

A fish that lives in America can live out of water for months at a time, similar to how animals got used to land millions of years ago, a new study shows.
The Mangrove Rivulets, a kind of little fish, lives in small pools of water. When their living place dries up, they live on the land, said Scott Taylor, a researcher in Florida.
The fish can grow as large as three inches. They group together and breathe air through their skin before they can find water again.
The new scientific discovery came during a trip.
“We were travelling for fun. and one day I kicked over a log (圆木) and the fish came out.” Taylor told reporters by telephone. He said he would make his study on the fish known to the public in an American magazine early next year.
In lab tests, Taylor said he found the fish can live up to 66 days out of water without eating.
Some other fish can live out of water for a short period of time. The walking catfish found in Southeast Asia can stay on land for hours at a time, while lungfish (肺鱼) found in Australia, Africa and South America can live out of water, but only in a not active (活波的) way. But no other known fish can be out of water as long as the Mangrove Rivulets and keep active, according to Patricia Wright, a biologist at a Canadian University.&科
More studies of the fish may tell how animals changed over time.
“These animals live in conditions similar to those millions of years ago, when animals began to move from water onto land.” Wright said.
小题1:. The Mangrove Rivulets is a type of fish that_________.

A．lives on land in Africa

B．can stay alive for months out of water

C．prefers living in dry places

D．is the longest living fish on earth

小题2:. Who will write a report on Mangrove Rivulets?

A．Scott Taylor.

B．Some reporters.

C．Patricia Wright.

D．Scientists from Europe.

小题3:. According to the passage, lungfish can___________.

A．breathe through its skin	B．be found in Asia
C．keep alive out of water	D．keep alive and walk on land

小题4:. Which one of the sentences below is not true?

A．The Mangrove Rivulets fish can live out of water as long as other animals if it has something to eat.

B．Millions of years ago, animals began to live onto land from water.

C．Lungfish found in Australia, Africa and South America can live out of water in a not active way.

D．The walking catfish found in Southeast Asia can stay on land for hours at a time.

小题5:. What can we say about the discovery of Mangrove Rivulets?

A．ft was made by Scott Taylor, a researcher in New York.

B．It was helped by an American magazine.

C．It was helped by Patricia Wright.

D．It was made by a researcher while travelling.

Many of you are studying English and you may be wondering why it is so difficult . It’s actually not too difficult to learn you know some about the language and culture that it reflects（反映）. the first thing you need to know about English is that it is made up of several languages such as French，German，Latin，Greek and Anglo-Saxon. In addition（除此以外），there are words from Spanish in English and American Indian words and names，even some Chinese and Japanese can be found in the English language. This borrowing of words other languages is of the key reasons why some of the difficulties that people meet with（遇到） they are learning English.

In almost every big university in the United States, football is a favorite sport. American football is not like soccer.
Players sometimes kick the ball, but they also throw (扔) the ball and run with it. They try to take it to the other end of the field; they have four chances to move the ball ten yards (码). They can carry it or throw it. If they move it to the end of the field, they can receive six points. This is called a touch-down (持球触地).
It’s difficult to move the ball. Eleven men on the other team try to stop the man who has the ball. If the man does not move the ball ten yards, his team kicks the ball to the other team.
Thousands of people come to watch it when there is a football game. They all yell for their favorite team. They dance and jump while they are yelling. Each team plays ten or eleven games each season. The football season usually begins in September and ends in November. If a team is very good, it may play another game after the season ends. The best teams play again on January lst. Many people go to see these games and many others watch them on TV.
小题1:In America, football players can _______.

A．only kick the ball	B．only throw the ball
C．only carry the ball	D．kick, throw and carry the ball

小题2:There are _______ on each team.

小题3:If the man does not move the ball ten yards, his team has to _______.

A．go home	B．carry the ball ten yards
C．run with it	D．kick the ball to the other team

小题4:The best teams play again _______.

A．on Christmas

B．after the season ends

C．on New Year’s Day

D．on Sunday

小题5:The underlined word “yell” in the passage means “_______”.

When you cut your skin, you bleed(流血). If a person loses a lot of blood, he will become ill and may die. Blood is very important. People have always known that. At one time, some people even drank blood to make them strong!
When doctors understand how blood goes around inside the body, they try ways of giving blood to people who need it. They take blood from the healthy people and give it to people who need it. This is called " blood transfusion（输血）". The blood goes from the arm of the healthy person into the arm of the sick person.
But there are two problems. First, it does not always work. Sometimes people die when they have blood transfusion. Later, doctors find that we do not all have the same kind of blood. There are four groups—O, A, B and AB. We all have blood of one of these groups. They also find that they can give any kind of blood to people of group AB. But they find that they must give A-group blood to A-group people and B-group blood to B-group people. I have O-group blood and the doctor told me that I could give blood to anyone else safely.
There is another problem. To give blood of the right kind, doctors have to find a person of the right blood group. Often they can not find a person in time. If they have a way to keep the blood until someone needs it, they can always have the right kind of blood. At first they find they can keep it in bottles for fifteen to twenty days. They do this by making it very cold. Then they find how to keep it longer. In the end they find a way of keeping blood for a very long time.
We call a place where we keep money a "bank". We call a place where we keep blood a "blood bank". One day, when you grow up, you may decide to give blood to a "blood bank". In this way you may stop someone from dying. Or perhaps one day you may become ill. You may need blood. The "blood bank" will give it to you.
小题1:From the passage, we learn that sometimes people die when they have blood transfusions because they __________ .

A．are given the cold blood	B．lose too much blood
C．are given the wrong kind of blood	D．are O-group people

小题2:Which of the following is true? ________

A．We can drink blood to make us strong.

B．Blood transfusion is always safe.

C．The writer has O-group blood and can give blood to anyone.

D．The blood can only be kept for 15to 20 days.

小题3:People set up the "blood bank" so that they can _____________ .

A．give the right kind of blood to the people who need it in time

B．keep different groups of blood as much as possible

C．make it easier to sell or buy blood

D．keep blood for more than twenty hundred years

小题4:From the last paragraph (段落) of the passage, we learn that _____________ .

A．the writer thinks it's good to give blood to a "blood bank"

B．we may become ill if we give blood to a "blood bank"

C．there are many blood banks in the world today.

D．blood is more important than money

小题5:The writer doesn't talk about ____________ in the passage.

A．how important blood is to us	B．the four groups of blood
C．where the blood bank is	D．what "blood transfusion" is

People are always afraid of making mistakes. But sometimes it’s not bad to make mistakes, and here is why.
At first, a mistake is a clear sign that you are trying new things. It’s always good to try new things, because when you are trying new things, you are growing. If you never try new things, how can you improve? How can you create? The simple answer is: “you can’t” Look around you, everything you see is the result of someone trying new things.
Another good thing about mistakes is this: when you are making mistakes, you are learning. For example, Edison failed 10,000 times before he invented the light bulb. When he was asked how he felt to fail that many times, he said that he hadn’t failed 10,000 times, but rather had learned 10,000 things that didn’t work.
Finally, when you make a mistake, you are much closer to success. Why? Because you have said what you should say, and you have done what you should do. Every time you make a mistake, you are closer to success. But it doesn’t mean that you can make mistakes without thinking. Instead, when you try new things you have to think them over, so that you can keep away from some unnecessary mistakes. We shouldn’t spend all our time and money on the only one way, but use them correctly, because our time and money are limited(有限的)
There is an old saying, “if you are not making mistakes, you are not trying hard enough.” So go bravely and make mistakes. And learn, and grow, and succeed.
小题1:If you are making a mistake, that means__________.

A．you’re careful	B．you’re kind
C．you’re growing	D．you know nothing

小题2:If you never try new things, you can’t___________.

小题3: After Edison failed 10,000 times, he__________.

A．gave up	B．invented the light bulb
C．invented the computer	D．invented 10,000 new things

小题4:When you make a mistake, you are closer to___________.

小题5: What’s the main idea of the passage?

A．Never make mistakes

B．You can make mistakes without thinking

C．Sometimes it’s good to make mistakes

D．Making mistakes is terrible

Trees are useful to man in three important ways: they give him wood and other useful things, they give him cool places, and they help to stop drought and flood.
Unluckily, in many parts of the world, man has not found that the third of these points is the most important. Man wants to make money from trees, so he has cut them down in large numbers, only to find that without them he has lost the best friends he had. And also, he is usually too careless to plant and look after new trees. So the forests slowly disappear.
This does not only mean that man will have fewer trees. The results are even worse: for where there are trees, their roots break up soil-make the rain in-and also bind the soil, thus stopping it from being washed away easily; but where there are no trees, the rain falls on hard ground and flows away, causing floods and carrying away the rich top-soil. When all the top-soil is gone, nothing is left but useless desert.
小题1:The most important points of trees to man is ________.

A．they help him to make money

B．they give him cool

C．they give him wood and other things

D．they help him to stop drought and floods

小题2:In many places forests slowly disappear because ________ .

A．many trees have been cut down by man

B．new trees are not well looked after

C．man has not paid enough attention to planting trees

D．all the above

小题3:Land becomes desert after all trees are cut down because ________ .

A．roots of trees break up the soil

B．there are too many rainfalls

C．strong winds bring a lot of sand

D．there are no longer trees to keep the rain and protect the top-soil.

小题4: Which title best fits the passage?

A．Trees and Man.

B．The Function of Tree Wood.

C．How do People do with Trees?

D．The Usage of Tree Roots.

All students need to have good habits (习惯): When you have good study habits, you can learn things quickly. You can also remember (记住) them easily.
Do you like to study in the living room? This is not a good place because it is usually too noisy. You need to study in a quiet place, like your bedroom. A quiet place will help you only think about one thing, and you will learn better.
Before you study, do not forget to clean your desk. A good desk light is important (重要的), too. You’ll feel tired easily if (如果) there is not enough light.
小题1:When you have good study habits, you will ________.

A．learn things quickly	B．remember things easily
C．think about one thing	D．both A and B

小题2:The living room is not a good place for study because it is too ________.

小题3:You should remember to ________ before you study.

小题4:You’ll feel tired easily if the light is ________.

小题5:The best title (标题) for this passage is ________.

A．Study in the Bedroom	B．Good Study Habits
C．How to Study	D．Desk Light Is Important

A．has good sounds	B．has a colour screen( 屏幕)
C．has a bad voice	D．is not smarter

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