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¡¾ÌâÄ¿¡¿American researchers have successfully developed a way to clean waste water without chemicals. The technique uses green plants. The tests were carried out at a waste water treatment centre. The scientists put plants in narrow containers inside a glass building. One end of each container was a little bigger than the other end. Waste water was directed down the container through the plants' thick roots which absorbed the wastes in the water and used them for food. At the same time the plants produced natural gas.The gas could be collected and sold as fuel. Four places in Florida are using green plants to clean their waste water.

¡¾1¡¿The best title for this passage is______.

A. The Success of American Scientists

B. A New Way to Treat Waste Water

C. Waste Water and Green Plants

D. Advanced Technology in America

¡¾2¡¿The technique to clean waste water is based on the fact that ______.

A. green plants can be put in narrow containers

B. most green plants have thick roots

C. water can be directed down through the plants' thick roots

D. the wastes in water can be food for plants

¡¾3¡¿The technique is called a new way because ______.

A. it is cheaper than any other one

B. it can be carried out in a glass building

C. it makes waste water clean but uses no chemicals

D. it needs only narrow containers and green plants

¡¾4¡¿The new technique ______.

A. has been widely used in America

B. is still being tested since its first use

C. proves to be more valuable than expected

D. has now come into use in some places of America

¡¾5¡¿What is the main idea of this passage?

A. Green plants are successfully used to clean waste water.

B. Scientists are able to clean waste water.

C. Green plants have been used to clean waste water in Florida.

D. New ways of making waste water clean are better than ways of using chemicals.

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¡°Make-A-Wish¡±is one of the world¡¯s most well-known charities. It makes wishes come true for children who have s¡¾1¡¿ illnesses. It gives them hope and helps them forget about their h¡¾2¡¿ problems.

It s¡¾3¡¿ in 1980 in Phoenix, Arizona. Christopher was a 7-year-old boy who was very sick. He always dreamed of becoming a p¡¾4¡¿ to fly in the sky. They gave Christopher a tour of the city in a police helicopter(Ö±Éý»ú) and b¡¾5¡¿ a space helmet for him.

There are four kinds of wishes children usually have:

I wish to go. Children usually want to visit some p¡¾6¡¿ of interest, like the Statue of Liberty.

I wish to meet. Children sometimes want to meet their f¡¾7¡¿ film stars or sports players.

I wish to be. Some children wish to become doctors to help people who don¡¯t have money for m¡¾8¡¿ treatment.

I wish to have. Some children want to have a computer, a bike or many other things. L¡¾9¡¿ for them, they can get what they want from the charity.

Let¡¯s hope more wishes will come true in the f¡¾10¡¿. People who work in the charity always try for the best. Will you be one of them?

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¡¾ÌâÄ¿¡¿ The computer is a useful machine. It is one of _____ invention in many years. The______kind of computer is the abacus (ËãÅÌ), invented in China centuries_____, but the first large, modem computer was built in 1946. The computer then could do maths problems very fast.

Today computers are used in______ways and can do many kinds of work. We are sure that______years the computer may touch the life of everyone, ______ people in the faraway villages.

In the last few years, there______great changes in computers. They are getting smaller and smaller, but computing faster and faster. Many scientists agree that computers can now do many things, but they cannot do______. Who knows_____the computers of tomorrow will be like? Will computers bring good things or bad things to people? The scientists of today will have to decide______ use the computers of tomorrow.

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¡¾7¡¿A. isB. have beenC. wasD. will be

¡¾8¡¿A. anythingB. somethingC. everythingD. nothing

¡¾9¡¿A. whichB. whatC. thatD. how

¡¾10¡¿A. what toB. how toC. whereD. who

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