问题
选择题
the population of China is the largest in the world.
A．It is well known that
B．As is well known
C．Which is well known
D．That is well known
答案
答案：A
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the population of China is the largest in the world.
A．It is well known that
B．As is well known
C．Which is well known
D．That is well known
答案：A
