2站距离太远，切换比较容易失败，可以调节哪个参数来取得较好效果。（）
A.增大邻区CIO
B.减小邻区CIO
C.减小本小区CIO
参考答案：B
—What a terrible earthquake!
—Yes. It came at about 6.30 this morning. I _____ to the bus stop at that time.[ ]
A. walk
B. was walking
C. walked
D. am walking
服药时间描述正确的是（）。
A.一般一日一剂
B.急性热性病可一日两剂
C.治疟药宜疟疾发作前两小时
D.补益药宜空腹时服用
E.安神药宜睡前服用
