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    Space is where our future is — trips to the Moon, Mars and beyond. Most people would think that aside from comets(彗星) and stars, there is little else out there. But, since our space journey started we have left so much trash（垃圾） there that scientists are now concerned that if we don't clean it up, we may all be in mortal （致命的）danger.
    The first piece of space junk was created in 1964, when the American satellite Vanguard I stopped operating and lost its connection with the ground center. However, since it kept orbiting around the Earth without any consequences, scientists became increasingly comfortable abandoning（抛弃） things that no longer served any useful purpose in space.
    It is estimated （估计）that there are now over 500,000 pieces of man-made trash orbiting the Earth at speeds of up to 17,500 miles per hour. The junk varies from tiny pieces of paint chipped off rockets to cameras, huge fuel tanks, and even odd items like the million-dollar tool kit that astronaut Heidemarie Stefanyshyn Piper lost during a spacewalk.
    The major problem with the space trash is that it may hit working satellites and damage traveling spacecraft(飞船). Moreover, pieces of junk may collide（碰撞） with each other and break into pieces which fall back to the Earth. To avoid this, scientists have invented several ways for clearing the sky. Ground stations have been built to monitor larger pieces of space trash to prevent them from crashing into working satellites or space shuttles. Future plans include a cooperative effort among many nations to stop littering in space and to clean up the trash already there.
    小题1:What was the first piece of man-made space trash­?
    A．A camera.B．A tool kit.
    C．A fuel tank.D．A broken satellite.
    小题2:Why were scientists NOT concerned about space trash in the beginning?
    A．It no longer served any useful purpose.
    B．It was millions of miles away from the Earth.
    C．It did not cause any problems.
    D．It was regarded as similar to comets and stars.
    小题3:Which of the following statements is true about space junk?­
    A．It is huge, heavy machines.
    B．It never changes position.
    C．It floats slowly around the Earth.
    D．It may cause problems for space shuttles.
    小题4:What has been done about the space trash problem­?
    A, Scientists have cleaned up most of the trash.
    B. Large pieces of space trash are being closely watched.
    C. Many nations have worked together to stop polluting space.
    D. Ground stations are built to help store the trash properly in space.

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

    试题分析：文章大意：文章主要介绍太空碎片给太空物体所带来的危险。
    小题1:D细节理解题。根据文章第二段第一句The first piece of space junk was created in 1964, when the American satellite Vanguard I stopped operating and lost its connection with the ground center.可知答案。故D正确。
    小题2:C细节理解题。根据文章第二段However, since it kept orbiting around the Earth without any consequences, scientists became increasingly comfortable abandoning（抛弃） things that no longer served any useful purpose in space.可知答案。故C正确。
    小题3:D细节判断题。根据文章最后一段大意可知太空碎片主要对太空的交通工具存在巨大的威胁。故D正确。
    小题4:B推理判断题。根据文章的最后一段Ground stations have been built to monitor larger pieces of space trash to prevent them from crashing into working satellites or space shuttles.可知大的太空碎片被密切的关注。故B正确。
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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

    New crime prediction software should reduce not only the murder rate, but the rate of other crimes. Developed by Richard Berk, a professor at the University of Pennsylvania, the software has already used in Baltimore and Philadelphia to predict which individuals on probation(缓刑) or parole(假释) are most likely to murder and to be murdered.
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    “This research replaces those seat-of-the –pants calculations,” he said.
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    A．calculations based on subjective opinions
    B．calculations based on widespread voting
    C．calculations made by advanced technology
    D．calculations based on serious considering
    小题2:For 650 people with crime records, how many potential murderers would the software find?
    A．6.5.B．13.C．52.D．65.
    小题3:From Para 7, we can infer that______.
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    B．the technology would not be widely accepted in the short term
    C．whether a person murders or not largely decided by his upbringing while young
    D．if a person murdered when he was fifty, he is sure to murder again while on probation
    小题4:Bushway’s attitude to the technology put forward by Richard Berk is ____.
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    小题5:Which would be the best title for the passage?
    A．Closely Supervise Potential Murders
    B．Measures Taken to Prevent Criminal Behavior
    C．Technology Revolutionizes Judges’ Way of Working
    D．Software is Developed to Predict Criminal Behavior

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