In advertisement English, there is a tactful use of homophones — words that are pronounced alike but written differently and often have different meanings. This feature can be seen in ______.

A．I’m MORE satisfied. (cigarette)

B．The new computer from AT&T. Flexible. Reliable. And very compatible. (computer)

C．7 days without 7-up make one weak. (beverage)

D．Less is more. (car)

影响轧制过程的因素可分为两大类，第一类包括（）、变形速度、变形程度；第二类包括轧件、（）、润滑、外力等因素。