36. The digestive system is made up of the gastrointestinal tract, also called the GI tract or ____ tract.
(A) endocrine
(B) respiratory
(C) digestive
(D) excretory
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統計: A(0), B(0), C(19), D(0), E(0) #3421721
統計: A(0), B(0), C(19), D(0), E(0) #3421721