As there is less and less coal and oil, scientists are exploring
分类: 外贸英语写作(00097)发布时间: 2024-08-14 20:28浏览量: 0
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、primary B、alternative C、instant D、unique 【正确答案】：B