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.

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