____ from endless homework on weekends, the students now find their own activities, such as taking a ride together to watch the sunwise.

A．Freed

B．Freeing

C．To free

D．having freed

HS-DPCCH信道中ACK/NACK与CQI上报的时间关系是（）。

A、2个ACK/NACK后上报一个CQI

B、1个ACK/NACK后上报一个CQI

C、每个时隙都是ACK/NACK和CQI同时上报

D、完全独立上报