32.Elevations above 700 meters may trigger _____ of altitude sickness in some individuals, including rapid breathing, increased heart rate, fatigue, asthma, nausea, and vomiting.
(A)implosions
(B)symptoms
(C)expressions
(D)reflexes

答案：登入後查看
統計： A(0), B(1), C(0), D(1), E(0) #3853091