Iamb(抑扬格)isasimplepatternofanunstressedsyllablefollowedby_______.

Iamb (抑扬格) is a simple pattern of an unstressed syllable followed by _______.

The meter "Iamb" is made of a(n) _____ syllable and a(n) _______ syllable. A: unstressed; unstressed B: stressed; unstressed C: unstressed; stressed D: stressed; stressed