A. continually B. wasted C. at the top D. means

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问题    A. continually       B. wasted       C. at the top       D. means       E. causes
F. everything       G. put          H. collecting       I. vary       J. appeal
K. congregating    L. efforts    M. condemns       N. achievement  O. occasionally
Around two billion people have no access to modern energy, and a billion have it only
【C1】________. The smoky stoves that many of them use, the World Health Organisation reckons, produce pollution that【C2】________ around 2 million premature deaths a year. Makeshift cookers also catch fire easily. And lives are not the only things【C3】________. Women and girls in rural villages lose time and energy walking around【C4】________ dirty solid fuels, ranging from crop waste to cow dung.
The【C5】________ of a stove that produces more heat, more cleanly and with less fuel is clear. But Kirk Smith, a stove specialist at the University of California at Berkeley, points out that most 【C6】________ to promote cleaner stoves have failed. Too much emphasis has gone on technology and talking to people【C7】________. too little to consulting the women who actually do the cooking. When subsidies run out, the schemes have faltered, with stoves left unused or broken.
Why might it be different this time? Wouter Deelder of Dalberg, a development consultancy, says that stoves have improved in【C8】________ from the materials used to the design of chimneys. Even so, the new stoves can cost $30 or more. Greater efficiency【C9】________ they pay for themselves in a few months, but the price is still prohibitive for people living on a few dollars a week. Moreover, technology that works well in the laboratory may fail in the field, where fuels, cooking practices and even the shapes of vessels【C10】________ widely. [br] 【C7】

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答案 C

解析空格填入形容词、分词或介词短语作后置定语，修饰people。上文的too much emphasis与空格后的too little形成鲜明对比，故此处的“people________”应与下文的women who actually do the cooking(实际煮食的妇女)的身份截然相反，词库中的at the top代入，指“高高在上的人”，符合语义。

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