There was a quick turnover of staff in the department as the manager treated his employees with ______ contempt.

A．inadequately
B．systematically
C．profoundly
D．simultaneously

A. healthy people should live separately from unhealthy members of the family
B. a germ-free home is not only possible, but significant
C. unless you live with the vulnerable, it is pointless to sterilize the air D, our immune systems are too weak to fight against the food poisoning bacteria