20. It’s said that the virus is infectious during its ________ period.
(A) occupation
(B) inclusion
(C) incubation
(D) combatant

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統計： A(3), B(1), C(2), D(1), E(0) #3077897

詳解 (共 1 筆)

#6438944
答案是 (C) incubation。...
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