急性肾衰竭选择血液净化疗法时，血钾（mmol/L）至少应达到（）
A.5.0
B.5.5
C.6.0
D.6.5
E.7.0
参考答案：D
It was in such a good place _____ everyone wanted to go and visit _____ I came across the old lady．
A．that, that
B．where, as
C．as, that
D．as, as
计算机病毒是一种___________。
A．人为编制的具有破坏作用的程序
B．生物病毒
C．包含错误代码的程序
D．运行会出错的程序
