题目选项分析

As the electronic network has begun to dominate commercial transactions, office environments and industrial processes, it has also insinuated itself into less formal social interactions of all types through the convenience of electronic mail, instant messaging and web pages.

As the electronic network has begun dominating the transactions of commerce, the environments of offices and the processes of industry, it had also insinuated itself into less formal social interactions of all types through the convenience of electronic mail, instant messaging and web pages.