问题
选择题
_______is known to all ,the Diaoyu Islands have been part of Chinese territory since ancient times.
A．It
B．That
C．This
D．As
答案
答案：D
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_______is known to all ,the Diaoyu Islands have been part of Chinese territory since ancient times.
A．It
B．That
C．This
D．As
答案：D
