By and by, _____ go out to contact other people in person, more and more people tend to socialize with others via electronic devices.

A．other than

B．rather than

C．more than

D．less than

焦比是指冶炼每吨生铁所消耗的干焦炭量。它的计算公式为：K＝Qk/P，单位为kg/t·Fe。