The use of renewable energy has increased rapidly in recent years. Firstly, solar power has become more affordable due to technological advancements; in contrast, the cost of fossil fuels has risen steadily. Secondly, governments around the world have introduced subsidies for green energy projects, which means more companies are willing to invest in wind and hydroelectric power. Although renewable energy still faces challenges such as storage issues, its share in the global energy mix is expected to double by 2030 because of growing environmental awareness.
📝 题目要求
找出文本中的逻辑关系词,并写出对应的逻辑类型
找出文本中的逻辑关系词；并写出所对应的逻辑类型：
:
:
:
:
:
:
✅ 参考答案与解析
Firstly：并列 due to：因果 in contrast：转折 Secondly：并列 Although：让步 because of：因果 Firstly：并列（表列举，与 Secondly 呼应） due to：因果（解释太阳能价格降低的原因） in contrast：转折（对比太阳能与化石燃料的成本变化） Secondly：并列（与 Firstly 并列，列举可再生能源增长的第二个原因） Although：让步（承认可再生能源存在挑战，主句强调其未来潜力） because of：因果（解释可再生能源占比提升的原因）