20. Once the chyme begins to enter the duodenum, it must first be ______ before any of the enzymes in the pancreatic juices can be activated.
(A) deacidified
(B) acidified
(C) dehydrated
(D) hydrated
(E) phosphorylated

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統計： A(1), B(0), C(0), D(0), E(0) #4030926