閱讀理解

     Batteries can power anything from small sensors to large systems.While scientists are finding ways to
make them smaller but even more powerful, problems can arise when these batteries are much larger
and heavier than the devices themselves.University of Missouri(MU) researchers are developing a
nuclear energy source that is smaller, lighter and more efficient.
    “To provide enough power, we need certain methods with high energy density (密度) .”said
Jae Kwon，assistant professor of electrical and computer engineering at MU.“The radioisotope
(放射性同位素)battery can provide power density that is much higher than chemical batteries.”
     Kwon and his research team have been working on building a small nuclear battery，presently the
size and thickness of a penny，intended to power various micro/nanoelectromechanical
systems(M/NEMS) .Although nuclear batteries can cause concerns，Kwon said they are safe.
    “People hear the word‘nuclear'and think of something very dangerous.”he said.“However, nuclear
power sources have already been safely powering a variety of devices, such as pacemakers，space
satellites and underwater systems.”
     His new idea is not only in the battery's size, but also in its semiconductor(半導體) .Kwon's battery
uses a liquid semiconductor rather than a solid semiconductor.
    “The key part of using a radioactive battery is that when you harvest the energy, part of the radiation
energy can damage the lattice structure(晶體結構)of the solid semiconductor.”Kwon said.“By using a
liquid semiconductor, we believe we can minimize that problem.”
     Together with J .David Robertson, chemistry professor and associate director of the MU Research
Reactor, Kwon is working to build and test the battery.In the future, they hope to increase the battery's
power，shrink its size and try with various other materials.Kwon said that the battery could be thinner
than the thickness of human hair.

1 .Which of the following is true of Jae Kwon?________
    A. He teaches chemistry at MU.
    B .He developed a chemical battery.
    C .He is working on a nuclear energy source.
    D .He made a breakthrough in computer engineering.

2 .Jae Kwon gave examples in Paragraph 4________.
    A .to show chemical batteries are widely applied
    B .to indicate nuclear batteries can be safely used
    C .to describe a nuclearpowered system
    D .to introduce various energy sources

3 .Liquid semiconductor is used to________.
    A .get rid of the radioactive waste
    B .test the power of nuclear batteries
    C .decrease the size of nuclear batteries
    D .reduce the damage to lattice structure

4 .According to Jae Kwon，his nuclear battery________.
    A .uses a solid semiconductor
    B .will soon replace the present ones
    C .could be extremely thin
    D .has passed the final test

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    科目：高中英語 來源：江西省競賽題 題型：閱讀理解

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    閱讀理解。

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    閱讀理解。
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         Next Halloween, a small vegetable that looks like a pumpkin may appear in a garden near you. The
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    閱讀理解
         The International Space Station allows astronauts to live in space for extended amounts of time,
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         Jacques will make their life as comfortable as possible in the ship. Besides being equipped with the
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    However, Jacques, who strongly believes that the secrets of our oceans may be the key to solving global
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    governments all over the world to help out, and expects to start construction on not one, but four or five of these amazing ships soon!
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    A. Because they can't stand the high water pressure.                        
    B. Because it's too cold in deep ocean.                                      
    C. Because time for experiments is too limited.                              
    D. Because it's dangerous to observe the sea life.                          
    2. The underlined word "circumvent" probably means_____.              
    A. fly away                                                                  
    B. get around                                                                
    C. travel through                                                            
    D. move into                                                                  
    3. From the fourth paragraph we can learn that_____.                     
    A. Jacques intends to design the ship mainly for sightseeing and traveling    
    B. living a comfortable life helps to do the ocean research quickly          
    C. it's much more expensive to eat freeze-dried food                        
    D. researchers on Jacque's ship will live more comfortably than astronauts  
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    A. Sea Orbiterthe ship of the future                                        
    B. A new way to explore the deep oceans                                      
    C. A great architectJacques Rougerie                                        
    D. Travel around the globe in Sea Orbiter                                    

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    科目：高中英語 來源：同步題 題型：閱讀理解

    閱讀理解
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    1. According to Armstrong, the goal of reading is to________.
    A. gain knowledge and expand one's view
    B. understand the meaning between the lines
    C. express ideas based on what one has read
    D. get information and keep it alive in memory
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    A. requires great efforts
    B. demands real passion
    C. is less natural than learning maths
    D. is as natural as learning a language
    3. What is a shortcoming of Armstrong's work according to the author?
    A. Some ideas are slightly contradictory.
    B. There is too much discussion on studying science.
    C. The style is too serious.
    D. It lacks new information.
    4. This passage can be classified as________.
    A. an advertisement  
    B. a book review
    C. a feature story  
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    閱讀理解
                                                        
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         Zebras have excellent hearing and eyesight and can run at a speed of up to 35 miles per hour (56
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    time chewing wears the zebra's teeth down,so their teeth keep growing all their lives.As the dry season
    arrives and the grasses die back,zebra herds travel to find more food and water holes for drinking.Most
    zebras have no specific territories.They travel from place to place,never staying in one area very long.
    1. What can be inferred from the first paragraph?
    A. There are different opinions about why the zebra has stripes.
    B. The black stripes help the zebra live through cold days.
    C. The zebra can easily be attacked by predators.
    D. The zebra always travels with other animals.
    2. According to the passage,herbivores are________.
    A. animals that have specific territories
    B. animals that only eat plants
    C. animals that kill and eat other animals
    D. animals that live in groups
    3. The zebra has strong teeth all their lives because their teeth________.
    A. only chew soft grasses
    B. are used all day
    C. are always growing
    D. are kept clean
    4. Which of the following statements about zebras is TRUE?
    A. They have poor eyesight and hearing.
    B. Their stripes can confuse predators.
    C. They can run 56 miles per hour.
    D. They usually stay in one area all their lives.
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    A. Hobbies & Leisure    
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    C. Digital Stadium      
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