___________ refer to the psychological factors, including the attitudes, beliefs and dispositions of the individual. A: Physiological filters B: Sociological filters C: Psychological filters

___________ include the natural or genetic differences in how one sees, hears,smells, tastes, or feels. A: Physiological filters B: Sociological filters C: Psychological filters

Physiological filters include the __________ or ___________ differences in how one ___________, ___________, ___________, ___________, or ___________.

Automated filters can catch all kinds of spam.

The psychological filters refer to the psychological factors, including the __________, __________, and __________ of the individual.

Why can’t email users depend fully on automated filters? Automated filters will never catch _________________,since spammers will continue to work hard in order to get their messages through.

The fine filters will be arranged （） one can be cleaned while the other is operating.

Why can't email users depend fully on automated filters?

Physiological filters include the genetic differences in how one sees, (______),smells,(______),and feels.

Also included in Chapter 14 are discussions of arithmetic circuits(运算电路) and digital filters(数字滤波器).