MIT President Susan Hockfield said more than 120,000 people signed up for the first MITx

course. She said Harvard and MIT hope other universities will join them in offering courses on the

open-source edX platform.

―‖ Hockfield said.

Other universities, including Stanford, Yale and Carnegie-Mellon, have been experimenting

with teaching to a global population online.

The Harvard-MIT program will be monitored by a not-for-profit（非盈利的）based in Cambridge, to be owned equally by the two universities. Both MIT have

students learn and which teaching methods and tools are most successful.

53. According to this text, edX is _______.

A. a part of the free MIT OpenCourseWare

B. a free computer program by MIT and Harvard

‖.

D. Get prepared to make materials for the edX courses

56. What can be said about MITx according to the text?

A. It is first offered as part of the edX learning program.

B. It is another free MIT-Harvard online learning program.

C. It is a standard to recognize online learners‘ achievement.