价值判断

下列各题的叙述中，都包含一定的价值标准或者是行为标准，请予以判断，在括号内写明“正确”或“错误”，并简要说明理由。

1．我们现在的主要任务是学习，没有经济来源和负担能力，孝敬父母主要表现在努力学习上，关心体贴父母是将来的事情。

判断：                                                                                                                                                 

理由：                                                                                                                                                 

2．青少年学生要自觉履行维护民族团结的义务。

判断：                                                                                                                                                

理由：                                                                                                                                                

3．阿豪说：“在与别人交谈时，我们要十分留意、倾听他人的发言，自己要一言不发。”

判断：                                                                                                                                               

理由：                                                                                                                                               

4．试卷发下后，你发现多加了10分，主动告诉老师。

判断：                                                                                                                                               

理由：                                                                                                                                                

某公司有职工8000人，从中随机抽取406人调查其每月工资收入状况的调查数据存放在Ex5_1数据库中。

试以95.45%的置信水平推断月收入在2500元及以上职工在全部职工中所占的比重（）

A.56.89%-70.20%

B.57.89%-69.20%

C.58.89%-68.20%

D.59.89%-67.20%