Moreover,27.6 percent of  those ____preferred reading on their mobile phones, which was 4.6 percent higher than last year.

A． surveying

B．to survey

C． surveyed

D． having surveyed

个人、法人和其他组织用户使用的计算机或者计算机信息网络必须通过（）进行国际联网，不得以其他方式进行国际联网。

A.接入网络

B.公用网络

C.自制网络

D.局域网络