曹老师你好，请您帮我分析两个句子中doing 的逻辑主语。
1. Qu Yuan raised a series of questions concerning the sky, stars,
natural phenomena, myths and the real world, reflecting his doubts about
traditional ideas and his pursuit of truths. 这里的representing 的逻辑主语是前面整个句子吗？
2. Experts consider it the start of China's
exploration of Mars, representing a milestone in China's move toward deep space. 这里的representing 的逻辑主语是it 吗？
