Herearethema的精选

问题详情：阅读下面短文，从短文后备题所给的A、B、C、D四个选项中，选出可填入空白处的最佳选项。Herearethematerialsyouneedtohaveasuccessfulstudyperiod.●WaterandHealthySnacksNowadays,youmayspendmuchtimestudying...