問題詳情

25. In mammals, blood returning from the head will pass through the ________ just before entering the right atrium.
(A) left atrium
(B) superior vena cava
(C) inferior vena cava
(D) aorta
(E) right atrium

參考答案

答案:B
難度:計算中-1
書單:沒有書單,新增