根据括号中所给的汉语写出单词，使句子意思完整正确。

小题1:Though the Grade 9 students are busy with their study, they should still do sports _________ (两次) a day.

小题2:The hall is ____________ (空的). There is nobody left.

小题3:Zhang Guorong has been away for ten years. But he will be my _________(偶像) forever.

小题4:When the film ended, the audience couldn’t stop _______ (鼓掌) for a long time.

小题5:If you like to go to Hong Kong for shopping, you can go there in any ___(季节).

如图，在一有界匀强磁场上方有一闭合线圈，当闭合线圈从上方下落穿过磁场的过程中：

A．进入磁场时加速度小于g，离开磁场时加速度可能大于g，也可能小于g；

B．进入磁场时加速度大于g，离开时小于g；

C．进入磁场和离开磁场，加速度都大于g；

D．进入磁场和离开磁场，加速度都小于g。