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    Many scientists believe that global warming , if        , will cause extreme climate changes this century .

           A．not stopping    B．no stop     C．not stopped     D．without stop ycy

    C

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    科目：高中英语 来源：0118 月考题 题型：阅读理解

    阅读理解。
         Directions: Read the following passage. Fill in the numbered blanks by using the information for the
    passage. Write NO MORE THAN 3 WORDS for each answer.

         A Low-Carbon Economy (LCE) refers to an economy which has a minimal emission of greenhouse gas
    (GHG), namely, carbon dioxide into the biosphere (生物圈). Recently, most of the scienti sts and the public
    hold the opinion that the climate is changing because there is such an accumulation of CO2 in the atmosphere
    due to human activities. The over-concentration of these gases is producing global warming that affects
    long-term climate, with negative impacts on humanity in the foreseeable future. LCE, therefore, is proposed
    as a means to avoid catastrophic climate change.
         All nations which are considered carbon intensive societies and societies which are heavily populated
    should become zero-carbon societies and economies. Several of these countries have promised to become
    'low carbon' but not entirely zero carbon, and claim that emissions will be cut by 100% by balancing emissions
    rather than ceasing all emissions.
         Nuclear power and the strategies of carbon capture and storage (CCS) have been proposed as the primary
    means to achieve a LCE while continuing to exploit non-renewable resources. Scientists are afraid, however,
    whether the spent-nuclear-fuel can be stored, and whether it is secure. Also they are not certain about the
    costs and time needed to successfully implement CCS worldwide and whether the stored emissions will leak
    into the biosphere or not. Alternatively, many have proposed renewable energy should be the main basis of a
    LCE, but, they have their associated problems of high-cost and inefficiency; this is changing, however, since
    investment and production have been growing significantly in recent times. Furthermore, it has been proposed
    that to make the transition to an LCE economically attractive we would have to attach a cost (per unit output)
    to GHGs through means such as emissions trading and/or a carbon tax .
         A LCE is aimed to integrate all aspects of itself from its manufacturing, agriculture, transportation to
    power-generation around technologies that produce energy and materials with little GHG emission and thus
    around populations, buildings, machines and devices which use those energies and materials efficiently and
    dispose of or recycle its wastes so as to have a minimal output of GHGs.
    Title:   1  
    I.   2   : an economy with a minimal output of GHG
    II.   3   of the present economy:
         ● global warming
         ● long-term climate change
         ●   4   on humanity
    III.   5   :
         ● to produce energy and materials with little GHG emission
         ● to use those energies and materials efficiently
         ● to have   6   of GHGs
    IV.   7   to achieve a LCE:
          ● nuclear power
          ● the strategies of carbon capture and storage
         ● renewable energy
         ●   8   
         ● a carbon tax
    V.   9   :
         ● spent-nuclear-fuel storage / storage of spent-nuclear-fuel
         ●   10    
         ● uncertainty about the costs and time needed

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