And on the night of November 9, tens of thousands of Berliners flocked to the wall which had divided their city since 1961.

VOA: standard.2009.11.03

The monthly tests are the following dates: September 29, October 27, November 17.

月考的时间是：,9月29号，10月27号，和11月17号。

麻省理工公开课 - 固态化学导论课程节选

The monthly tests are the following dates: September 29, October 27, November 17.

月考的时间是：,9月29号，10月27号，和11月17号。

麻省理工公开课 - 固态化学导论课程节选