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    Tears are nature's way of making us feel more comfortable. When our eyes is made uncomfortable by some small pieces of pollution, or when we are cutting onions, or when we are exhausted and “red –eyes” from over work and late hours, tears form in our eyes to clean and re-flesh them.
    Tears are also a sign of strong emotion. We cry when we are sad and we cry when we are happy.
    And tears seem to be uniquely（唯独）human. We know that animals also experience emotion—fear, pleasure, loneliness — but they do not shed （流） tears. From this, we can conclude that tears are closely related to the emotional and biological make up of the human species.
    Biologically speaking, tears are actually drops of saline fluid, which is a little bit salty, produced by a gland（腺）in the body. Because salt is an important component, tears may actually constitute the most conclusive evidence that the human animal is the end product of a long evolutionary process that began in the sea.
    And it is clear that, in addition to（除了） the emotional benefits（好处）, the shedding of tears has a specific biological function as well. Through tears, we can eliminate from our body certain chemicals which build up in response to stress and create a chemical imbalance in the body. Crying actually makes us feel better by correcting that imbalance and making us feel good again. And thus the emotional and the biological functions of tears merge（合并）into one and make us even more "human" than we would otherwise be.
    68．According to the passage, human beings may have originated（起源于）in________.
    A．the sea             B．the salt        C．chemicals      D．animals
    69．Which of the following is NOT a function of tears?
    A．Biological       B．Emotional    C．Political   D．Chemical
    70．According to the article, which of the following is unique to humans?
    A．The feeling of loneliness.         B．The state of feeling good.
    C．The ability to shed tears          D．The feeling of fear
    71．The underlined word “eliminate” probably means_______.
    A．add            B．produce       C．replace        D．remove
     
    小题1:A
    小题2:C
    小题3:C
    小题4:D
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    科目：高中英语 来源：不详 题型：阅读理解


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    科目：高中英语 来源：不详 题型：阅读理解

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    B．Future robotic technology might make people too clever.
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    科目：高中英语 来源：不详 题型：阅读理解


    “ONLY A COKE WILL DO”
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    BREAKTHROUGH HIT?
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    科目：高中英语 来源：不详 题型：阅读理解


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    “Take a look at this photo. You see this dark black cloud hovering(盘旋) over the surface of Earth? We don’t know what it is made of, but it could give us a lot of trouble and we shall have further tests before we send a Venus Being there.”
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    “If all you say is true, won’t this set back the flying saucer program several years?”
    “Yes, but we shall continue as soon as the Grubstart gives us the added funds.” Prof. Zog replied.
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    A.the feasibility of landing a satellite on Earth
    B.the possibility of making a first-rate flying saucer
    C.the feasibility of sending a Venus Being to Earth
    D.the possibility of directing a flying saucer into Manhattan
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    B.the Earth’s atmosphere is filled with deadly gases
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    B.the mass of tiny drops of water floating above Earth
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    科目：高中英语 来源：不详 题型：阅读理解


    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．  
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    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

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    科目：高中英语 来源：不详 题型：阅读理解


    A breathtaking trick potentially left over from our ancestors might be found in us — the ability to sense oxygen through our skin.
    Amphibians, animals such as frogs that can live both on land and in water, have long been known to be capable of breathing through their skin. In fact, the first known lungless frog that breathes only through its skin was discovered recently in the rivers of Borneo.
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    “No one had ever looked,” explained Randall Johnson, a biologist researcher.
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    Athletes also often try to get more oxygen delivered to their muscles in order to improve their performance. They often do this by training at high altitudes or in low-oxygen tents. The new study suggests they might want to expose their skin as well as breathing in low-oxygen air to improve their performance. “It’s hard to say what exactly might be done, however—there’s a lot we don’t know yet,” Johnson explained.
    The scientists detailed their findings in the April 18 issue of the journal Cell.
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    B. People have to surf the Internet to read detailed findings.
    C. It has been proved that these findings help treat lung diseases.
    D. It has long been expected oxygen sensors exist in mice’s skin. 
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    A. carrying oxygen around the body                   B. improving athletes’ performance
    C. detecting oxygen                                          D. increasing level of oxygen
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    A. Negative                  B. Doubting                  C. Positive             D. Hesitating
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    A. Great Findings Benefits Athletes A Lot
    B. Frogs And Mice Are Distant Relatives
    C. First Known Animal Breathes Through Skin
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    科目：高中英语 来源：不详 题型：阅读理解


    第二部分：阅读理解（共20 小题。第一节共15 小题，每题2分；第二节共5 题，每题2分；共40 分）
    阅读下列短文，从每题所给的四个选项  A．B．C．D中选出最佳选项。
    A
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    The purpose is simple：the turtle must not die．
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    As it happens，the planet also has only one known male．He lives at a zoo the city of Suzhou．He is 100 years old and weighs about 200 pounds．They are the last hope of saving a species believed to be the largest freshwater turtles in the world．
    “It’s a very dangerous situation,” said Peter Pritchard, a famous turtle expert in the United States，who has helped try to save the species．、
    For many Chinese people，the turtle is the symbol of health and long life，but the last two Yangtze giant soft-shell creatures show the threatened state of wildlife and biodiversity（生物多样性）in China．Pollution, hunting and over development are destroying natural habitats，and also endangering the plant and the animal population．
    China contains some of the world’s richest treasures of biodiversity, yet the latest major survey of plants and animals shows a discouraging picture．Nearly 40 percent of all mammal species in China are now endangered, Scientists say．For plants，the situation is worse；70 percent of all nonflowering plant species and 86 percent of flowering species are considered threatened．
    46．Why is the turtle in Changsha specially cared?
    A．She has been unnoticed and unappreiated five decades．
    B．She can be sold at a high price．
    C．She is the planet’s last known female Yangtze giant soft-shell turtle．
    D．She is old and heavy．
    47．Which of the following statements is TRUE according to the text?
    A．The turtle in Changsha is precious because it is the symbol of health and long life．
    B．Peter Pritchard believes the female turtle is the largest freshwater turtle in the world．
    C．The female turtle is in a dangerous situation where she may be killed．
    D．The female turtle in Changsha and the male turtle in Suzhou are the last hope of saving the largest freshwater turtle species in the world．
    48．According to the text ________in China．
    A．there are the richest species of living things
    B．wild plants and animals are becoming fewer
    C．turtles are specially protected
    D．the situation of plants is better than that of mammal species
    49．The last paragraph proves the threatened state of wildlife and biodiversity in China by__________ ．
    A．facts and numbers                      B．Peter Pritchard’S words
    C．teaching theory                        D．telling a story

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