雷击区的直埋全塑电缆，在其上方平行敷设排流线，此距离为（）
A.10cm
B.20cm
C.30cm
D.40cm
参考答案：C
Not many people __________ the idea that money brings happiness.
A．in favor of
B．agree
C．subscribe to
D．approve
若5k﹣2=1，则k=（ ）．
