A:①②③
B:①②④
C:①③④
D:②③④
—Did you get up late this morning?
—Yes, so after______quick breakfast, I had to run to office
点P0(x0,y0)是曲线y=3lnx+x+k(k∈R)图象上一个定点,过点P0的切线方程为4x-y-1=0,则实数k的值为( )