Tom and I like music中的tom and i作为两个代词的并列，可以做主语。

而【putting countries with special needs on a self sustaining development path】 and 【preventing people from slipping back into poverty】 require more than relying on low-skilled labours and exports of unprocessed natural resources

因为ing分词分句作主语，所以，两个ing分句的并列，在句子中也可以视为一个主语吗？