某水利工程浆砌石围堰级别为4级，相应围堰洪水标准应为()年一遇。
A.5～3
B.10～5
C.20～10
D.50～20
参考答案：B
解析：
—We're going for a picnic next Sunday, and I'd like you to join us.
—____________！I have to see my grandmother. She has been
ill for two weeks.
A．What a pity
B．Good luck
C．That’s all right
D．Go ahead
小王是徽商银行公务卡金卡持卡人，他在北京工行自动取款机上使用公务卡取款500元，徽商银行应收取小王（）取款手续费。
A.0元
B.3.6元
C.12元
D.17元
