“How could you lose so much money?” John asked his wife, eyeing her angrily from _____ the kitchen table.

A．at

B．across

C．through

D．on

尿培养菌落计数超过10/ml，应为()

A．疑诊尿路感染

B．泌尿系结核

C．尿标本污染，应重复检查

D．确诊泌尿系感染

E．没有临床意义