Are these pens ?( )
A:yours
B:your
C:you
在等比数列{an}中,a1=1,q≠1.若am=a1a2a3a4a5,则m=( )
I usually spend two hours ______ books every day.
若直线kx-y-2=0与曲线1-(y-1)2=x-1有两个不同的交点,则实数k的取值范围是( )