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
As there is less and less coal and oil, scientists are exploring
- 2024-08-14 20:28:27
- 外贸英语写作(00097)