足三阳经的走向规律是（）
A.从胸走手
B.从手走头
C.从头走足
D.从头走手
E.从足走腹
参考答案：C
—Do you think we should accept that offer?
—Yes, we should, for we _________ such bad luck up till now, and time _________ out.
A．have had; is running
B．had; is running
C．have; has been run
D．have had; has been run
