My sister ______ goes to bed early because she needs a lot of sleep every day.
A:always
B:sometimes
C:hardly
D:never
①“学法交流”的播放时间是____分钟.
②____节目播放的时间最短,占总时间的____%.
直线l过原点,且点P(3,5)到l的距离等于3,则直线l的方程为( )