C

A light emitting diode （发光二极管）, or L．E．D．, is a device that shines when electricity passes through it．But it works differently than traditional kinds of light bulbs．Light emitting diodes use less energy and last much longer than bulbs with a filament （灯丝） inside．L．E．                               D．’s are also cooler to the touch, and shine a lot brighter than they used to．  

Red L．E．D．’s have long been used as signal lights on electronic equipment．But now light emitting diodes also come in blue and other colors．Colored L．E．D．’s are used to show images on everything from wireless phones to huge video signs．And white L．E．D．’s are being used increasingly to replace traditional lighting systems．  

But all these require electricity．In poor countries, people often burn fuel to produce light．But the smoke can make people sick．So an electrical engineering professor from Canada started a project to produce L．E．       D．lighting systems for the developing world．These lights are powered by batteries that can be recharged with energy from the sun．The batteries can also be charged through other ways, such as wind power and water power．

Professor David Irvine-Halliday tells the story of how he got the idea．In 1997, while climbing in the Annapurna mountains in Nepal, he saw a small school．All the children were outside．He looked through a window and saw that inside the school was dark．The school had a sign that read: "We have no teachers．If you want to stay and teach for a few days, we would be very pleased．" Professor Irvine-Halliday says that experience had a big effect on him．Back at the University of Calgary, he was on the Internet one day．He saw a company in Japan selling bright white L．E．                           D．’s．So he built a light with some．This is how he began the Light Up the World Foundation．

48．Compared with traditional kinds of light bulbs, L．E．D．’S________．

A．waste a lot of energy                    B．need shorter time to make

C．shine much brighter                 D．are warmer to touch

49．According to the passage, we know that L．E．D．’s________．

A．will replace all the lights            B．will be more and more popular

C．will be only colored ones               D．will be only used in developing countries

50．According to the passage, we can infer that the purpose of the Light Up the World Foundation is to________．

A．develop L．E．D．lighting system for the developing world                   

B．sell bright white L．E．D．’s

C．collect money for developing countries                                        

D．earn money by selling L．E．D．’s

C

A blow-fly was looking for an ideal place like rotting meat to lay her eggs so that when her little babies were born, they could feed on the meat.

As she turned a corner in the grassland, she smelt something that smells like rotten meat in the air! With a great joy she landed on it and laid her eggs. She was happy that her children would have enough food to eat.

But the fly did not know she had made a great mistake. What she had sat upon was not meat but a flower, which smells badly. It is called a carrion flower. So, when the blow-fly’s eggs hatched and the little maggots（蛆）came out, they had nothing to eat. They died of starvation.

The carrion flower is one of the many flowers which send out dirty smells to attract flies. The Rafflesia stinks like rotting meat, while the tropical Lords and Ladies flower gives out a smell like rotting fish.

They do it for a special reason. These plants cannot move from their place. But it is important for the male cell of one plant to get in touch with the female cell of another plant. Once that is done, the seed of the plant will bloom and give birth to another plant.

The plant uses its stink to attract flies. As soon as the blow-fly sits on the follower, it is captured by the flower with strong hair. When the hair falls, the fly is free to fly- but it takes some pollen（花粉） with it. And goes and sits on another plant. The male cell of one plant meets the female cell of the other. The seed gets new life.

64. Why did the fly land on something smelly?

A. She was too careless before her bearing.       B. She liked the particular smell very much

C. She hoped to find some food for her babies.    D. She couldn’t find a better place for delivery.

65. The little maggots finally died because_________.

A. they were born too weak             B. they lacked food available

C. carrion flower were poisonous         D. their mother didn’t take care of them

66. Flowers like carrion flower and Rafflesia naturally smell terrible so that_________.

A. they need insects to spread their pollen     B. they succeed in producing more seeds

C. their seeds can be carried to other places    D. they can manage to absorb more nutrients

67. What is the best title of the text?

A. Dirty Tricks        B. Smelly Plants   C. A strange Flower   D. Secrets of Nature.

C

   A light emitting diode （发光二极管）, or L．E．D．, is a device that shines when electricity passes through it．But it works differently than traditional kinds of light bulbs．Light emitting diodes use less energy and last much longer than bulbs with a filament （灯丝） inside．L．E．   D．’s are also cooler to the touch, and shine a lot brighter than they used to．  

Red L．E．D．’s have long been used as signal lights on electronic equipment．But now light emitting diodes also come in blue and other colors．Colored L．E．D．’s are used to show images on everything from wireless phones to huge video signs．And white L．E．D．’s are being used increasingly to replace traditional lighting systems．  

But all these require electricity．In poor countries, people often burn fuel to produce light．But the smoke can make people sick．So an electrical engineering professor from Canada started a project to produce L．E．       D．lighting systems for the developing world．These lights are powered by batteries that can be recharged with energy from the sun．The batteries can also be charged through other ways, such as wind power and water power．

   Professor David Irvine-Halliday tells the story of how he got the idea．In 1997, while climbing in the Annapurna mountains in Nepal, he saw a small school．All the children were outside．He looked through a window and saw that inside the school was dark．The school had a sign that read: "We have no teachers．If you want to stay and teach for a few days, we would be very pleased．" Professor Irvine-Halliday says that experience had a big effect on him．Back at the University of Calgary, he was on the Internet one day．He saw a company in Japan selling bright white L．E．  D．’s．So he built a light with some．This is how he began the Light Up the World Foundation．

48．Compared with traditional kinds of light bulbs, L．E．D．’S________．

     A．waste a lot of energy              B．need shorter time to make

     C．shine much brighter                  D．are warmer to touch

49．According to the passage, we know that L．E．D．’s________．

     A．will replace all the lights            B．will be more and more popular

     C．will be only colored ones        D．will be only used in developing countries

50．According to the passage, we can infer that the purpose of the Light Up the World Foundation is to________．

     A．develop L．E．D．lighting system for the developing world             

       B．sell bright white L．E．D．’s

     C．collect money for developing countries                           

       D．earn money by selling L．E．D．’s

C

A blow-fly was looking for an ideal place like rotting meat to lay her eggs so that when her little babies were born, they could feed on the meat.

As she turned a corner in the grassland, she smelt something that smells like rotten meat in the air! With a great joy she landed on it and laid her eggs. She was happy that her children would have enough food to eat.

But the fly did not know she had made a great mistake. What she had sat upon was not meat but a flower, which smells badly. It is called a carrion flower. So, when the blow-fly’s eggs hatched and the little maggots（蛆）came out, they had nothing to eat. They died of starvation.

The carrion flower is one of the many flowers which send out dirty smells to attract flies. The Rafflesia stinks like rotting meat, while the tropical Lords and Ladies flower gives out a smell like rotting fish.

They do it for a special reason. These plants cannot move from their place. But it is important for the male cell of one plant to get in touch with the female cell of another plant. Once that is done, the seed of the plant will bloom and give birth to another plant.

The plant uses its stink to attract flies. As soon as the blow-fly sits on the follower, it is captured by the flower with strong hair. When the hair falls, the fly is free to fly- but it takes some pollen（花粉） with it. And goes and sits on another plant. The male cell of one plant meets the female cell of the other. The seed gets new life.

64. Why did the fly land on something smelly?

A. She was too careless before her bearing.       B. She liked the particular smell very much

C. She hoped to find some food for her babies.    D. She couldn’t find a better place for delivery.

65. The little maggots finally died because_________.

A. they were born too weak             B. they lacked food available

C. carrion flower were poisonous         D. their mother didn’t take care of them

66. Flowers like carrion flower and Rafflesia naturally smell terrible so that_________.

A. they need insects to spread their pollen     B. they succeed in producing more seeds

C. their seeds can be carried to other places    D. they can manage to absorb more nutrients

67. What is the best title of the text?

A. Dirty Tricks        B. Smelly Plants   C. A strange Flower   D. Secrets of Nature.

A young man rushes about a small room, hiding himself behind a chair, jumping on the desk, jabbing (刺) the air with his pencil. To an outsider there appears to be no __1__ for these strange acts. However, he is the __2__ of an experiment in hypnosis (催眠). Being hypnotized, the young man has __3__ the suggestion that there is a fierce dog in the room. So he acts as though there were.

According to the popular conception of hypnosis, a hypnotized person is in a __4__ like sleepwalking－seemingly awake yet out of touch with his or her normal __5__ awareness and self-control. There are, however, enormous __6__ between the sleepwalker and the hypnotized person. First, the sleepwalker, __7__ the hypnotized person, pays no attention to other people and doesn’t take instructions. Second, the sleepwalker doesn’t remember sleepwalking, while the hypnotized person __8__ everything that went on under hypnosis.

Obviously, sleep and hypnosis are different. But what exactly is hypnosis? Psychologists still don’t have a firm answer to this question. Although hypnosis has been already successfully __9__ to a large range of medical uses, there is little clear agreement as to how hypnosis works. Only when scientists can understand this, can the full potential (潜能) of hypnosis in medical treatment be __10__.

A. reason     B. purpose      C. doubt  D. evidence

A. species    B. target  C. subject       D. aim

A. received  B. accepted     C. admitted     D. believed

A. time B. course C. development      D. state

A. awake     B. waking       C. sleepy D. sleeping

A. influence B. relations     C. similarities D. differences

A. unlike     B. like     C. for      D. with

A. forgets    B. destroys     C. enjoys D. remembers

A. come       B. put     C. turned D. changed

A. exploited      B. saved  C. made  D. kept