--Do you play _______ piano in your free time?

---No, I like sports. I often play______ soccer with my friends.

A．/; the

B．the ;/

C．the ; the

D．a; a

在孕妇腹壁上听诊，下列哪种音响与母体脉搏相一致

A．胎心音
B．子宫杂音
C．脐带杂音
D．胎动音
E．肠蠕动音