【名词&注释】
临床表现(clinical manifestation)、通透性(permeability)、消化系统疾病(digestive system diseases)、静脉曲张(varicose veins)、结缔组织增生(connective tissue hyperplasia)、循环系统疾病(circulatory system diseases)、毛细血管(capillary)、正常人(normal)、脾肿大(splenomegaly)
[单选题]正常人(normal)血浆pH为( )
A. 6.32~6.45
B. 6.50~7.05
C. 7.10~7.30
D. 7.35~7.45
E. 7.50~7.65