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  3. For most people Britain’s bouncing economy, now growing at its fastest for three years, is cause for cheer. Not,【C1】______for th

For most people Britain’s bouncing economy, now growing at its fastest for three years, is cause for cheer. Not,【C1】______for th

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问题     For most people Britain’s bouncing economy, now growing at its fastest for three years, is cause for cheer. Not,【C1】______for those who manage the country’s electricity power system. For them【C2】______growth means faster progress towards a critical situation. Ofgem, the energy regulator, has long【C3】______that the margin between peak electricity demand and【C4】______supply is falling. In June it said the margin would【C5】______from 14% in 2014 to just 4% in the winter of 2018, increasing the risk of blackouts【C6】______the weather turn cold or a power station or two【C7】______.
    Since that report Britain’s economy has grown fast. Ofgem’s assessment【C8】______that Britain would grow by about 1.6% in 2017. The Bank of England now【C9】______2.8% growth. This will【C10】______consumption. Over the past decade an increase in peak electricity demand of 0.5%【C11】______each additional percentage point of economic growth. John Feddersen of Aurora Energy Research thinks the capacity margin will therefore【C12】______to 2.6% by 2018 unless action is taken. That【C13】______into a one-in-seven chance of shortages, up from the one-in-twelve chance【C14】______was thought most likely last summer.
    Falling coal prices have kept Britain’s coal-fired power stations running at full【C15】______. That means many will have to close sooner than was【C16】______because European environmental laws【C17】______the total number of operating hours left to them. At the same time cheap coal has made electricity from gas uncompetitive,【C18】______operators to put some gas-fired plants into long-term【C19】______. Renewable capacity cannot yet make up the【C20】______.
【C4】
选项 A、eligible
B、considerable
C、available
D、affluent
答案C
解析 空格所在句用到peak来修饰电力需求，暗示电力需求量大，下一句提到供求之间的差额减小，导致停电风险增加，据此可判断这里应指可用的电力供应跟不上实际的用电需求，所以选C项available“可利用的”。
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