Recent years have witnessed the rapid development of technology, especially in the field of communication. According to a recent survey, 90% of the population now owns a smartphone, and 70% of them use social media platforms daily. This trend has significantly altered the way we communicate and stay connected with others.

Questions:

1.What percentage of the population owns a smartphone according to the passage?

2.How many people use social media platforms daily among those who own a smartphone?

答案解析：

1.答案: 90%
解析: 根据文章中的信息，“According to a recent survey, 90% of the population now owns a smartphone”（根据最近的调查，现在90%的人口拥有智能手机），因此答案为90%。

2.答案: 70%
解析: 文章提到，“70% of them use social media platforms daily”（其中70%的人每天使用社交媒体平台），这里的“them”指的是拥有智能手机的人。因此，答案为70%。

解析归纳：

技术发展的影响： 文章强调了技术发展的快速，特别是通信领域的发展，如何影响了人们的日常生活和沟通方式。

智能手机和社交媒体的使用率： 文章通过具体的数字（90%和70%）展示了智能手机和社交媒体在人们日常生活中的普及程度，反映了现代社会通信技术的广泛应用。