【名词&注释】
肺结核(pulmonary tuberculosis)、消化道(digestive tract)、支气管哮喘(bronchial asthma)、呼吸道(respiratory tract)、常见病(common diseases)、两者之间(between them)、吸气性呼吸困难(inspiratory dyspnea)
[单选题]耻骨两降支的前部相连构成耻骨弓,两者之间(between them)的夹角称为耻骨角,正常时为
A. 70°~80°
B. 80°~90°
C. 90°~100°
D. 100°~105°
E. 105°~110°