What are the causes of great migrations in ancient China? ( )
A: growing population
B: natural disaster
C: war of the north China
D: spreading of infectious disease
E: bad weather
A: growing population
B: natural disaster
C: war of the north China
D: spreading of infectious disease
E: bad weather
举一反三
- What are the four great inventions of ancient China? （ ）
- What are the four great inventions of ancient China? ( ). A: Gunpowder B: Papermaking C: Compass D: Printing
- ----What ______the population of China?--China has a population of around 1.4 billion. One-third of the population ______ workers here. A: is; are B: are; are C: is; is D: are; is
- The four great inventions in ancient China are ____.
- ----What ______the population of China? --China has a population of around 1.4 billion. One-third of the population ______ workers here.