要珍惜美好青春、建设美好未来，我们青少年就要（    ）

①树立远大理想，不要把时间浪费在小事上  ②从现在做起，努力做有益于他人和社会的事

③努力学习科学文化知识，不断完善自我      ④珍惜时间，热爱生活

根据短文内容，判断正确还是错误。

    Xiao Hong and Xiao Lan are classmates. Xiao Hong is short,but Xiao Lan is tall. Xiao Hong likes singing. Xiao Lan likes singing, too. So they all like music class. Xiao Hong has a brother. His name is Xiao Qiang. He has short hair and big ears. He is lovely. Xiao Lan has a sister. Her name is Xiao Li. She has long hair and big eyes. She is lovely, too.

张大爷一家真不幸，他和老伴没有工作，唯一的儿子又下了岗，但是他们一家被列为城市最低生活保障对象。这属于(     )

有传言2012年12月21日开始将连续“黑”三天，电灯等照明设施都将无法使用，导致部分群众抢购火柴和蜡烛。对此，国家电网等有关部门已经出面辟谣。这给我们在合理消费方面的启示是（    ）