问题
单项选择题
______is announced in today's papers, the Shanghai Export Commodities Fair is also open on this Sunday.
A．That
B．Which
C．As
D．It
答案
参考答案：C
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______is announced in today's papers, the Shanghai Export Commodities Fair is also open on this Sunday.
A．That
B．Which
C．As
D．It
参考答案：C