0.125×8.47×8____7.45×2

9.6×101____969.6

执行器模块为小灯模块、电动机模块．

某同学要设计一个装置，当有光照射且有声音时，电动机才会转，则应选择的控制器序号为____，应使用的传感器序号为____．

若∅⊊{x|x²≤a，a∈R}，则a的取值范围是（　　）

请先阅读下面短文，掌握其大意，然后从方框所给的词中选出最恰当的5个，用其适当形式填空。

      I’d like to tell you a story about my best friend Jane. Last week in school we had a big fight, and she didn’t ____  me. It all started when she asked me if she could copy my homework. I asked her why she wanted to do that, and she said that she had forgotten to do hers. I said I didn’t think it was a good idea. I said it would start a bad____  and she should do her own work. She got really ____  at me and said she didn’t want to be my best friend anymore. I said that was OK and that I was sure she would ____  it. And she did. Yesterday she told me she was ____. She said it was much better if she did her own work.