题目选项分析

Although 1998 saw several new ventures promoting online distance learning for both college- and graduate-level courses, it was also a year when a large number of faculty members began questioning whether the computer screen was an adequate replacement for the classroom.

In 1998 several new ventures were promoting online distance learning for both college-and for graduate-level courses, but it was also a year for a large number of faculty members who began questioning whether the computer screen was an adequate replacement for the classroom.