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Asthereislessandlesscoalandoil,scientistsareexploringnewwaysofmakinguseofenergy,suchassunlight,windandwaterforpowerandfuel.A.abruptB.alternativeC.authenticD.abstract

题目详情
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.abrupt B.alternative C.authentic D.abstract
▼优质解答
答案和解析
B