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    A. in order B. in place C. in danger D. in balance 【查看更多】

     

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    Environmental problems are becoming more and more serious all over the world. For example, cars have made the air unhealthy for people to breathe and poisonous gas is given off by factories. Trees on the hills have been cut down and waste water is being poured continuously into rivers. Furthermore, wherever we go today, we can find rubbish carelessly disposed.

       There are different kinds of pollutants, each of which comes from different sources. It is necessary to identify the source of pollution, in order to make a policy to eliminate them.

       Different products, processes and activities of our industrialized world together form the major source of pollution. The forms of pollution can be mainly divided into three kinds—solid, liquid and gas.

       These pollutions have greatly damaged our planet and continue to do so. In fact, pollution is threatening our existence. The whole ecological balance of the earth is changing. Massive destruction of environment has brought about negative effects and even posed a great threat to man’s existence.

       We must face the situation that exists and take action to solve our environmental problems. For instance, new laws must be passed to place strict control over industrial pollution, the public must receive the education about the danger of pollution and so on.

       The earth is our home and we have the duty to take care of it for ourselves and our later generation. Fortunately, more and more people have realized these problems. Measures have been taken to deal with these situations by the government. Laws have been passed to stop pollution, I hope the problems will be solved in the near future and our home will become better and better.

    1. How many examples of environmental problems are given in the first paragraph?

    A. 2                             B. 3                    C. 4                              D. 5

    2. Which of the following is TRUE according to the passage?

    A. In all there are three kinds of pollution

    B. If people continue to pollute our planet, there will be no trees.

    C. Industrial pollution has been completely controlled.

    D. Laws have been passed to stop pollution and protect our environment.

    3. The sentence “We hope that all these measures will be effective and bring back a healthy environment” can best be put at the end of paragraph _____.

    A. 2                             B. 3                    C. 5                              D. 6

    4. The writer’s attitude towards the future of the earth is _____.

    A. despair                  B. negative          C. optimistic                  D. hopeless

     

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    阅读理解

    　　Throughout history soldiers have fought bloody battles in order to control the high ground．There is no doubt that this is a tactical(战术的)necessity．Standing above your enemy is an advantage that often leads to victory．

    　　Nowadays, high ground does not just mean hill-tops．It also means space, which has become an increasingly important part of military strategy(军事战略)．

    　　With its more advanced satellite technologies, America is the major power in space．And now the US Air Force has put into service a new weapon designed to jam enemy satellite communications．It is an important step toward US control of space．

    　　The so-called Counter Communications System(反卫星通信系统)was declared operational on November 1．The ground-based system uses electromagnetic radio frequencies(无线电磁波)to stop enemy satellites working on a short-term basis．

    　　“A short-term effect ensures that during the time of need, the enemy’s space-based capability(能力)is reduced,"said a US military official．“Following the time of need, their capabilities can return to its original state．”

    　　The system is made up of an antenna(天线), transmitters(发射机)and receivers and can be easily transported around in a vehicle．

    　　To control space was one of four aims of a national space policy started by former president Bill Clinton in 1996．The goal is to make sure US forces can rely on space-based services and to deny an enemy any similar benefits．

    　　The US military has experimented with several"anti-satellite"weapons, including lasers, to destroy or damage enemy units．

    　　Theresa Hitchens, vice president of the Center for Defence Information in Washington, welcomed the new system as long as it does not create rubbish that could threaten global use of space．She believed it should not destroy satellites, only stop them working for a while．

    　　Unfortunately, it seems that we are not going to limit our goal for'space control'to non-violent systems,"she said, raising the danger of a space arms race．

    　　To change the balance of power in space the EU and China are working together on the Galileo project．By 2008 the system will be in place as an alternative to the Americans'global positioning service．

    (1)

    What’s the significance(意义)of the Counter Communications System to the US?

    [　　]

    A．

    It can help avoid bloody battles．

    B．

    It can bring the US closer to its goal for"space control”．

    C．

    It can ensure the US forces to depend on space-based services．

    D．

    It can destroy enemy equipment．

    (2)

    How does the new system work?It affects the enemy by ________．

    [　　]

    A．

    being transported around easily in a vehicle

    B．

    controlling the high ground

    C．

    damaging them

    D．

    blocking their satellite communications

    (3)

    One thing that seemed to worry Theresa Hitchens is that the new weapon ________．

    [　　]

    A．

    could increase the danger of a space arms race

    B．

    is not effective enough

    C．

    is not threatening enough

    D．

    might produce dangerous waste

    (4)

    What can we infer from the passage?

    [　　]

    A．

    New space weapons may be on the way．

    B．

    The US military have never stopped experimenting with anti-satellite weapons．

    C．

    The Galileo Project, when in effect, can match the Counter Communications System in power．

    D．

    In future wars, space battles will decide human’s fate(命运)．

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