One possible cause of uncertainty about online learning is that ___________?
                    举一反三
- One possible cause of uncertainty about online learning is that ___________? A: only a half million people are enrolled in online degree programs today. B: most people are used to a traditional, campus-based education. C: an online education is not as effective as traditional instruction. D: most programs offer rolling admissions.
 - Uncertainty about online learning : How _______online learning can be .
 - What is your opinion about online learning?
 - According to the Uncertainty Principle,______ . A: it was theoretically possible to predict the future from Newton's laws B: it was not theoretically possible to know the present from Newton's laws C: there is no limit to the product of the uncertainty in a particle's position and the uncertainty in its momentum D: the more accurately one is able to define the position of a particle, the more certain he feels about its momentum
 - What's the author's view about online learning?
 
