中国大学MOOC: Historians are still mystified by the question____ some ancient civilizations disappeared suddenly in history.
举一反三
- Historians are still mystified by the question____ some ancient civilizations disappeared suddenly in history.( ) A: that B: how C: that is D: is how
- 中国大学MOOC: The four ancient civilizations refer to ___________,___________,___________, and___________.
- Which of the following ancient civilizations is still developing: A: The Civilization of Ancient Egypt B: The Civilization of Ancient India C: The Civilization of China D: The Civilization of Ancient Sumer E: The Civilization of Ancient Maya
- 中国大学MOOC: Now some students are still _____ the things they dont like.
- 中国大学MOOC: Poverty and bad housing conditions are still _______ in some distant areas.