MOOC, an open online course, aims at providing interactive discussion and open access via the web. In addition to _________ course materials such as videos, readings, and problem sets, MOOC provide interactive user forums that help build a _________ for the students, professors, and teaching assistants.

MOOCs _________ made waves in the fall of 2011, when Professor Sebastian Thrun from Stanford University opened his graduate-level artificial intelligence course up to any student anywhere, and 160,000 students in more than 190 countries _________. This new kind of online classes is _________ the higher education world in many ways. Since the courses can be taken by hundreds of thousands of students at the same time, the number of universities might _________ greatly. Professor Thrun has even _________ a future in which there will only need to be 10 universities in the world. Perhaps the most _________ thing about MOOCs, many of which are being taught by professors at prestigious (声誉高的) universities, is that they’re free. This is certainly good news for _________ students.

There is a lot of __________ and fear about MOOCs. While some say free online courses are a great way to increase the __________ of minority students, others have said they will leave many students __________. Some critics have said that MOOCs encourage an unrealistic universal __________ of higher education and that there is no replacement for true dialogues between __________and their students. __________, a brain is not a computer. We are not __________ hard drives waiting to be filled with data. People learn from people they __________ and remember the things that arouse emotion. Some __________ worry that online students will miss out on the social aspects of college. In other words, MOOCs __________social interaction among students and professors even if they are offered by professors from __________ universities.