As there is less and less coal and oil, scientists are exploring new ways of making use of ____ energy, such as sunlight, wind and water for power and fuel.
A．originalB．a(chǎn)lternativeC．convenientD．staple
B
形容詞辨析。A原始的；B替代的;供選擇的；C便利的；D經(jīng)常需要的;經(jīng)常用的；結(jié)合句意可知B正確。句意：因?yàn)槊禾亢褪驮絹?lái)越少，科學(xué)家正在尋找新方法利用替代能源。
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