①志愿者通过参与志愿服务工作，弘扬了新风气、新风尚 ②充实了志愿者的业余时间③有利于构建和谐社会 ④有利于社区和社会的进步
A：①②③
B：②③④
C：①③④
D：①②④
选出与你所听到的信息相关联的一项（ ）
It's seven o'clock in the morning. It's time for breakfast. Jenny's mother is cooking in the kitchen. Jenny would like some milk and bread. Li Ming would like some eggs, bread and juice. After breakfast, Jenny and Li Ming will go to school by bike.
下列哪项不属于动物在生物圈中的作用（ ）
下列图形中，既是轴对称图形又是中心对称图形的是
