In nature, you may see many insects (昆虫）and animals of different colors. Have you ever wondered why?

   Locusts are super delicious food for birds,but it is not always an easy job for birds to catch them.It is neither because locusts are good jumpers or runners nor because they are smarter than their enemies. The reason is that the colors of locusts change with the colors of crops(庄稼). When crops are young,locusts look green. But when autumn comes, locusts change to the yellow and brown color as crops do.

   Brown bears,tigers and other animals move quietly through forests. They can’t be seen easily by their enemies. This is because they have colors similar to the trees. For the same reason, polar bears that live on a land of snow and ice are white. Butterflies and bees living among the flowers are colorful like flowers. Soil insects are mostly dark-colored and they live under the soil(土壤） in a dark and wet environment. However, insects with colors different from plants can easily be found and eaten by others. So in order to survive,they have to hide themselves in the daytime and appear only at night.

   Have you ever noticed some even stranger acts? The ink fish in the sea can send out some very black ink when it faces danger. As the ink spreads over , its enemies will find themselves suddenly in a dark world. At the same time the ink fish immediately swims away. That is how it keeps itself safe though it is not strong at all.

1.It is not easy for birds to catch locusts because____________.

A .locusts are good runners                B. locusts can jump very high

C. locusts are smarter than birds            D. locusts can change their color

2.According to the passage, most soil insects_________

A.do not have bright colors

B. change their colors with the soil

C. do not live in a dark and wet environment

D. Eat colorful insects like butterflies and bees

3.What’s the meaning of the underlined word”survive” in the passage?

A. 繁殖            B. 产卵              C. 觅食               D. 生存

4.The ink fish_______so that its enemies will not see it?

A. changes its color                   B. makes the water around it black

C. appears only at night               D. hides itself in the sea rocks

5.What is the main idea of this passage?

A. Some insects and animals have different skills.

B. Some insects and animals are clever than we think.

C. Some insects and animals use colors to protect themselves.

D. Some insects and animals can get used to the environment easily.

 

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.

Finally, some companies are thinking of ways to bring down the number of old computers. Sony has agreed to help recycle old Sony products（产品）. Dell, Hewlett-Packard and other companies now also take back some old computers.

In some countries, laws（法规）are being passed, too. Computer companies will have to pay for collecting and recycling 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（组织）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（慈善团体）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.

1.What do many people do with old computers?

A．They repair them.	B．They sell them.
C．They send them to others.	D．They stop using them.

2.How many computer companies are mentioned in the second paragraph？

A．One.

B．Two.

C．Three.

D．Four.

3.According tothe laws in some countries, computer companies must        .

A．collect and recycle most of their products	B．collect all their used products
C．repair and upgrade old computers	D．make more cheaper computers

4. What do the organizations do to solve the problem of old computers?

A．Help the computer companies to collect them.

B．Repair and send them to those who need them.

C．Help people to learn to use them.

D．Turn rubbish into useful things.

5.What is the main idea of this passage?

A．Repairing old computers.	B．Encouraging to make cheap computers
C．Recycling old computers.	D．Helping those who need computers.

 

If you often feel tired and the doctor can’t find anything wrong with you, you may be in a state of subhealth(亚健康). Subhealth is a state between health and illness. Most of the subhealthy people are middle-aged ones who are usually stressed out because of work and family. And some of them are students who are having exams.

If you are subhealthy, it is not difficult for you to become well soon. You should have good living habits. For example, you should get up early and go to bed early. And you should exercise regularly（有规律地）. Exercising can keep you healthy. As for meals, it is better to eat less salt and sugar. Vegetables, fruit and fish are important to your body. You should eat more of them. It is not good to eat too much at one meal, because it may cause unhealthy changes in the digestive tract（消化道）. And at last, a balanced diet is very helpful in staying away from（远离）subhealth.

1.How may you feel if you’re subhealthy?

A．Happy

B．Comfortable

C．Tired

D．Sad

2.According to the passage, who will probably(可能地) be subhealthy?

A．Teachers and students

B．Parents and children

C．Middle-aged people and students

D．The young and the old

3.What should you do if you are subhealthy?

A．Relax and have good living habits

B．Go to see the doctor and ask for some medicine.

C．Go to hospital in foreign countries.

D．Stay at home and not talk to others

4.If you want to have good living habits,      .

A．you need to get up early and go to bed early.

B．you should exercise very often

C．you should eat less salt and sugar and eat more vegetables, fruit and fish

D．All above(上边的)

5.What is the main(主要的) idea of the passage（短文）?

A. What is subhealth.

B. How to keep away from subhealth.

C How to keep subhealthy.

D. Why are you subhealthy?

 

How would we travel without maps? It would be a bit adventurous (冒险的) to set off from Oxford University to go to London Bridge if there wasn't a map of the London Underground at each station. In fact, a lot of the early map-makers were adventurers and explorers, especially in the 15th and 16th centuries.

    So what did people do before there were maps? Well, it was quite easy to use natural signs like mountains and rivers if you were travelling on foot or riding a horse. People took small boats down rivers and followed coastlines. And it was much more logical (合理的) to use time, not distance, to measure (计量) journeys: the next village is a three-hour ride, for example.

    In fact, in the earliest maps, people didn't draw landmarks. They drew the stars. It was very easy to see the night sky and use it for navigation (航行). The sky was a lot clearer before the light pollution from cities that we have today. When towns and cities were built, people drew road maps which gave correct distances and directions.

    The London Underground was opened in 1863 and it also used a road map style. But a man called Henry Beck realized that travelling by train wasn't the same as driving your car across London. Passengers only needed to know which stations to change at. His new design (设计) for the Underground map wasn't very popular with the train companies at first. But the passengers loved it and in 1933, 700,000 copies were printed.

    These days, of course, you can ride a bike, drive a car or go through a forest and know where you are exactly, using a GPS. It's really difficult to get lost!

1.What was drawn in the earliest maps?

A. Stars.                             

B. Landmarks.

C. Cities and towns,                    

D. Mountains and rivers.

2.When did road maps come out?

A. Around 15th and 16th centuries.         

B. When people began to travel by train.

C. When people began to travel by sea.      

D. When cities and towns appeared.

3.Which of the following is true?

    A. A GPS helped people to travel long time ago.

    B. Ancient people could travel on a horse without maps.

    C. The sky was polluted by light before cities were built.

    D. Henry Beck's map wasn't popular with the passengers.

4.What is the main idea of the passage?

A. Maps have a long history.           

B. We never get lost these days.

C. We can't travel without maps.          

D. Henry Beck designed a new map.

 

How often one hears children wishing they were grown-ups, and old people wishing they were young again. Each age has its pleasures and its pains(痛苦), and the happiest person is the one who enjoys what each age gives him without wasting his time in useless regrets(后悔).

Childhood is a time when there are few responsibilities(责任) to make life difficult. If a child has good parents, he is fed, looked after and loved, whatever he may do. It is impossible that he will ever again in his life be given so much without having to do anything in return. What’s more, life is always giving new things to the child--- things that have lost their interest for older people because they are too well-known. But a child has his pains: he is not so free to do what he wishes to do; he is repeatedly being told not do something or being punished for what he has wrongly done.

When a young man starts to earn his own living, he can no longer expect others to pay for his food, his clothes, and his room, but has to work if he wants to live comfortably. If he spends most of his time playing about in the way he used to as a child, he will go hungry. And if he breaks the laws of society(社会) as he used to break the laws of his parents, he may go to prison. If, however, he worked hard, keeps out of trouble and has good health, he can have the greatest happiness of building up for himself his own position(地位) in society.

1.What is the happiest person according to the passage?

A．A child who can do whatever he likes.

B．An old person who lives in a comfortable life.

C．A grown-up who no longer expects other to pay for him.

D．A person who never wastes his time in his whole life.

2.Which of the following is true, according to the second paragraph?

A．Life for a child is fairly easy.

B．A child is always loved whatever he does.

C．If much is given to a child, he must do something in return.

D．Only children are interested in life.

3.What is the main idea of the passage?

A．Life is not enjoyable since each age had some pains.

B．Young men can have the greatest happiness if they work hard.

C．Childhood is the most enjoyable time in one’s life.

D．One is the happiest if he can make good use of each age in his life.

4.What will the fourth paragraph most probably discuss following this passage?

A．Examples of successful young men.

B．How to build up one’s position in society.

C．Joys and pains of old people.

D．What to do when one has problems in life.