题目内容：
根据以下资料，回答题：Besides climate change，developing countries like China need to deal with energy __21__and environmental issues：the development of sources of clean energy needs to be__22__line with their interests．Clean energy has been given greater prominence than ever before；it is seen as a new industrial__23__and__24__ 0f economic growth for the new century．The time for clean energy has come．
In China, clean energy is moving ahead at full speed．Take wind power as an example: China had __25__ wind power generating capacity of l2．21 GW，making China the largest wind power generator in Asia and fourth in the world．But according to the research，one．third of wind power capacity is running__26__ due to an inability to get the power to the national__27__．
India-like China relies__28__0n coal for its energy needs．This will only change if the funds and technology to develop clean energy，such as wind and nuclear power，are__29__．India will not choose clean energy __30__ ．Nuclear power is currently the most__3 1__0f clean energy sources. __32__，if it is to be __33__ 0n a large scale by developing nations，technological advances will be needed to make it competitive with coal．
Compared __ 34 __developed countries，developing countries have more __35__ choices when it comes to energy structure. Promoting economic growth requires __36 __ energy and coal，the cheapest and most __37__ source of energy for many countries is the __38__ choice．Cheap coal means cheap electricity and a competitive economy．Rising electricity prices would cause public __39__ and impact on standards of__40__．
A．scarce
B．scare
C．scarcity
D．scary
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