问题
单项选择题
Actually, the date for entry into effect will be 1st February（）.Though the text does not tell us about it.
A.1995
B.1998
C.1999
D.2000
答案
参考答案：C
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Actually, the date for entry into effect will be 1st February（）.Though the text does not tell us about it.
A.1995
B.1998
C.1999
D.2000
参考答案：C