If two main constituents of an idiom share the last vowel, it is

If two main constituents of an idiom share the last vowel, it is called（ ）.
A、rhyme
B、alliteration
C、repetition
D、reiteration
【正确答案】：A
【题目解析】：rhyme：押韵alliteration：头韵repetition：重复reiteration：反复地说，重申句意：如果成语的两个主要成分共享最后一个元音，则称之为押韵。