① Time for breakfast. ____ A. Sing and dance.
② Time for PE class____ B. Drink some milk.
③ Time for English class ____ C. Read and write.
④ Time for music class. ____ D. Jump and run.
某化学兴趣小组的同学对空气中氧气含量的测定实验进行探究.
近期,《南方周末》报道的辱母杀人案引起了广大网民的热议。该案中,于欢母亲因欠巨额债务而无力偿还遭暴力催债,面对母亲遭受凌辱,已经情绪崩溃的于欢将其中四人捅伤并致一人死亡。在悲剧发生之前,其母数次拨打110,但并没有得到帮助,这表明全面推进依法治国尤其需要( )