填空题
If a good way can be found to trap and dispose of the associated CO2, there is the possibility of continuing to use fossil fuels as 1.
1、
【正确答案】
1、the main sources of modern energy
【答案解析】由文章第十三段第二句话“That leaves scope for the continued use of fossil fuels as the main source of modern energy if only some magical way can be found to capture and dispose of the associated CO2．”可知“the main sources of modern energy”为正确答案。