17. Regarding internal structure of the syllable unit, which of the following is NOT found in the monosyllabic English word “sprit”?
(A) Onset
(B) Rhyme
(C) Theme
(D) Coda

Syllable structure https://en.wikipedia.org/wiki/Syllable

1. Onset
   a consonant or consonant cluster, obligatory in some languages, optional or even restricted in others
   ◎The onset is the sound or sounds occurring before the nucleus.
   
   
2. Rime
   right branch, contrasts with onset, splits into nucleus and coda
   ◎ nucleus and coda are grouped together as a "rime"
   
   
3. Nucleus  a vowel or syllabic consonant, obligatory in most languages
   ◎ The nucleus is usually the vowel in the middle of a syllable.
   
   
4. Coda
   consonant, optional in some languages, highly restricted or prohibited in others
   
   ◎ Coda is the sound or sounds that follow the nucleus. 

(rime/rhyme)

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(C) Theme （不確定是不是指句子裡的theme...）

source: http://www.linguisticsnetwork.com/semantics-thematic-roles/