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     To many web-building spiders, most of whom are nearly blind, the web is their essential window on the world: their means of communicating, capturing prey（猎物）, meeting mates and protecting themselves. A web-building spider without its web is like a men cast away on an island of solid rock，totally out of touch and destined to

    starve to death.
    So important is the web to an orb-web spider's survival that the animal will continue to construct new webs daily even if it is being starved. For 16 days the starving spider builds completely normal webs. Then, as the animal gets scrawnier（憔悴的）， it constructs a wider-meshed web using fewer strands（线）. Such webs would only trap larger prey, which is more economical from the perspective of a starving spider.
    The spider stores energy by recycling web protein. It simply eats its own web each evening and reuses it to produce new silk. In studies with radioactively，labeled materials, it was found that 95 percent of web protein reappears in the next day' web. Most of the energy needed for web-building is used in walking over the strands as they are laid down．
    Scientists are impressed by the adaptability of the spider's highly preprogrammed brain, which is larger for its size than the brain of any other invertebrate（无脊推动物）．If web-building is interrupted, or if some of the existing strands are destroyed，the spider simply goes back to see where the web is left off and then finishes building a normal web. One spider will finish building the incomplete web of another.　
    小题1: Which of the following best expresses the main ideas of the passage?
    A．Secrets of Spiders' AdaptabilityB．Importance of Webs to Spiders
    C．Secrets of the Spiders' Life D．Spiders' Highly Preprogrammed Brain
    小题2:According to the passage, which of the following statements is TRUE?
    A．Most spiders will stop conducting webs when hungry.
    B．One Web-building spider usually conducts one web.
    C．Web-building spiders will probably die without their webs．
    D．Web-building spiders have good eyesight.
    小题3:A spider conducts a wider-meshed web when____________.
    A．it is 16 days oldB．it is getting weaker
    C．it has fewer wendsD．it hunts for food
    小题4:A spider's ability to finish an incomplete web proves that___________.
    A．it has a highly preprogrammed brainB．it reuses its web protein to reproduce new silk
    C．the web is everything for a spiderD．it is able to rebuild a destroyed web

    小题1:B
    小题2:C
    小题3:B
    小题4:A

    小题1:从文章第一段以及第二段句首可知B项最佳。
    小题2:从第一段可知。
    小题3:从第二段第三句可知。
    小题4:文章最后一段第一句为主题句，所以蜘蛛织完未完的网是它的本能，因为它有一颗有较高预排程序的大脑来适应环境。
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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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    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．DNA tests have proved the fact that the first Native Americans came from Australian.
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    D．People began to enter America across the Bering Strait about 12,700 years ago.

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    科目：高中英语 来源：不详 题型：阅读理解

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    ___________________________________________________________________________                                                                           
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    ____________________________________________________________________________                                                                             
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    _________________________________________________________________________________________________________________________________________________________                                                                     
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    科目：高中英语 来源：不详 题型：完形填空

    When I come across a good article in reading newspapers. I often want to cut and keep it. But just as I am about to do so I find the article on the ___1___ side is as much interesting. It may be a discussion of the way to ___2___ in good health, or a ___3___ about how to behave and conduct oneself in society. If I cut the front article, the opposite one is likely to ___4___ damage, leaving out half of it or keeping the text ___5___ the title. Therefore, the scissors would ___6___ before they start, ___7___ halfway done when I find out the ___8___ result.
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    18. A. following     B. next    C. above  D. former
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    科目：高中英语 来源：不详 题型：阅读理解

    Believe it or not, optical illusion(错觉) can cut highway crashes.
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    小题1:The passage mainly discusses ________.
    A．a new way of highway speed control
    B．a new pattern for painting highways
    C．a new way of training drivers
    D．a new type of optical illusion
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    A．they should avoid speed-related hazards
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    D．they are coming near to the speed limit
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    小题4:The American Automobile Association Foundation for Traffic Safety plans to ________.
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    B．change the road signs across the country
    C．replace straight, horizontal bars with chevrons
    D．repeat the Japanese road patterns
    小题5:What does the author say about straight, horizontal bars painted across roads?
    A．They are suitable only on broad roads.
    B．They are falling out of use in the United States.
    C．They are ignored in a long period of time.
    D．They cannot be used successfully to traffic circles.

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