对于氰化物、硫化氢、有机磷农药中毒的患者心脏骤停时，应给予单纯（）的心肺复苏。
A.胸外按压
B.人工呼吸
参考答案：A
保管期间届满或者寄存人提前领取保管物的，保管人应当将原物归还寄存人，孳息可以与保管费相抵，归保管人。( )
—Excuse me. Which is the way ______ the post office, please?
—Sorry, I don't know. You can ask the policeman _______ help. [ ]
A. to; to
B. to; for
C. for; for
D. for; to
