[ Cardiology Services ]
The SA node is responsible for which type of heart rhythm?
A. sinus
B. atrial
C. ventricular

Random Topics:
ConjunctionsSimple Past/Past ProgressivePast SimpleDefinite & Indefinite Pronoun & ConditionalsVocabullary TestClause Markers TOEFL GrammarArticles & PrepositionArticle and Order of AdjctiveTenses and VerbsComparative & Superlative AdverbsOther quiz:
Modal Verbs › ViewPERFECT MODALS. They didn’t finish the project on time. They ___________ started earlier.
A. should have
B. must have
C. could have
D. might have
Prepositions › View
Are you very good …………. English?
A. at
B. in
C. for
Homonyms › ViewThe Queen sat on her ___ to open parliament.
a. throne
b. thrown
Conditional Sentence Type 2 › View
What would you do if you ______ a million pounds?
A. won
B. win
C. will win
D. had won
