急救复苏时心外按压次数与人工呼吸次数比是（）。
A.30：2
B.25：2
C.20：2
D.15：2
E.10：2
参考答案：A
– Where did she go on vacation?
– .
A．She stays at home
B．She visits her uncle
C．She went to New York
D．She wants to go to Hainan
