阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

With over 1.4 billion people, China has the world’s largest population, but is one of the smallest surname pools. In contrast, the United States 【小题1】 (report) to have 6.3 million surnames in its 2010 census(人口普查). So what is it that leads 【小题2】 this vast difference?

It’s 【小题3】 (part) because of the difference in language. You can’t just add a stroke(笔画)to a Chinese character and create a new surname. Technology is also a factor at play. We rely on technology on 【小题4】 daily basis. The systems that process our information rely on a 【小题5】 (limit) list of standardized Chinese characters,【小题6】 means that those with rare characters in their surnames may find using this technology difficult. It causes them 【小题7】 (change) their last names out of convenience. Meanwhile, the 【小题8】 (lose) of certain surnames over time is a naturally 【小题9】 (occur) phenomenon. Given China’s long history, it has lost more names over time, compared to younger countries.【小题10】, this phenomenon is still one that Chinese people are struggling within the digital age.