—Who likes playing ______ volleyball?  

—My sister ______. [ ]

A. the; likes  

B. /, likes  

C. /, does  

D. the, does

最大呼气中段流量与下列那些因素有关（）

A.肺活量

B.用力呼气时的力量大小

C.小气道直径

D.大气道阻力

E.小气道阻力