抽样估计中概率保证程度为95.45%的相应概率度为（）
A.2
B.3
C.1.96
D.1
参考答案：A
Country life gives him peace and quiet, which is ________ he can't enjoy while living in big cities.
A．that
B．why
C．where
D．what
深圳证券交易所规定，债券回购交易的申报单位为张，100元标准券为1张。( )
