問題詳情
44. Breathing rate increases because of
(A) insufficient oxygen in the blood
(B) excess carbon dioxide in the blood
(C) the accumulation of metabolites in the blood
(D) both A and B
(E) all of A, B, and C
參考答案
答案：D
難度：非常困難0.142857
統計：A(0),B(2),C(0),D(1),E(2)