From at least 1766 BCE(公元前)to the twentieth century of the Common Era(公元),China was ruled ______ dynasties. .
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It is from Qin ______ we get the word China.
A. that
B. which
One Chinese dynasty lasted more than 800 years______ another lasted only fifteen years.
A. when
B. while
Rulers of the Qin dynasty managed to unify China and ______ the Age of Warring States by 221BCE..
A. ended
B. ending
All this makes for dangerous______.
A. stability
B. instability