DNA复制的一般原则为（）

[问答题]Passage 3　　The greatest impact on the family over the last 50 years has been the changing role of the wife. These changes have affected not only her life but also that of her husband and children. (1) The family has changed from an economically defined unit under the authority of the father and having minimal interpersonal emotional ties to a unit with strong emotional ties directed primarily by the mother to her husband and children. One important result was greater emotional and general psychological seclusion of the woman which clearly implied that the female role was culturally a secondary one.　　In recent decades it has become clear that for a distinct minority of American women the traditional mother role in the seclusion of the home is no longer acceptable. For many the family is of diminishing importance. The development of education for women has been a crucial factor in this change. Today, over 80 percent of all women complete four years of high school as compared to only 35 percent in 1940. This is related to the fact that marriage now occurs a year later for the average woman. The proportion of women aged 20 to 24 who are single increased from 28 percent in 1960 to 40 percent by the mid-1970s. (2) Child bearing is being postponed, so that compared to the 1960s, 10 percent fewer women bear their first Enid in the two years immediately following marriage. Furthermore, more women today remain childless. Work, older age at marriage, and fewer children are the basic changes that have taken place in women’s roles in recent years.　　The trend among women is toward increased education, and this is linked to other role changes. (3) The higher a woman’s educational attainment, the more likely she is to work, to stay in the labor force longer, and to have more job opportunities available to her. This further suggests that when women are married their work has a great impact on their marriages. For example, since working wives contribute 25 to 40 percent of their total family income, their position as decision-makers in the family is usually strengthened. (4) Waits points out that the social trends towards increased education for women mean not only more work experience but also delayed marriage and decreased fertility. These changes, in turn, point the way toward even greater labor force participation throughout the life cycle.　　The number of women entering the work force is rapidly increasing. Women outnumber men in the total population by about 7 million. (5) When that is added to the fact that labor force participation of males is slowly declining because of the trend toward earlier retirement, “it may not be too long before one out of every two American workers is a woman.”

[问答题]大兴学校一年级新生李永波，由于其家长是收废品的，一天来学校上课时脖子没有洗干净，在上课时，老师发现了李永波的脖子脏，就叫他站起来给大家看，把他作为典型，教育其他的学生要讲究卫生，并当着全班同学的面说“让你那收破烂的父母把你的脖子洗干净”。老师的这种做法给李永波的心灵造成了极大伤害，在这以后，每当上这位老师的课时，李永波就感觉似乎大家都在盯着他的脖子，同时想起老师说的“让你那收破烂的父母把你的脖子洗干净”感到抬不起头。这种心理妨碍了他集中精力听课，所以对老师教的内容学的很差。结果考试时李永波不及格，老师狠狠的批评他，李永波终于忍受不了，他把这件事告诉了母亲，母亲向学校要求调换班级，学校领导知道这件事情后同意了，后来，李永波在老师教的内容上表现出极大的才能。　 问题：结合案例运用“以人为本”的学生观，分析教师在教育活动中应怎样对待学生？

[单选题]当混凝土结构表面温度达到（）℃左右时，其内部深层温度依然很低，灭火用水射到混凝土结构表面急剧冷却，使表面混凝土中产生很大的收缩应力，造成构件表面出现很多由外向内的裂缝，使结构产生严重破坏，降低了建筑结构的稳定性。

[单选题]备件新品可分为：维修备件、维工备件、（）、生产工艺备件。

[单选题]耳源性脑脓肿颅内压增高症状不包括（）

[单选题]负责监督进出国境的货物的机构是（）

[多选题]某咨询人员在企业进行咨询时，首先对3～5年内企业对人力资源的需求目标进行了解，而后协助企业相关人员根据企业各个职位设置进行了系统分析和研究，制定出职务说明书，咨询人员还就自身经验帮助企业组织并实施了相关的培训活动，为企业全面提高员工的知识和操作技能水平奠定基础。以上活动涉及到的人力资源管理内容有（　　）。

[单选题]化脓性膝关节炎重要的治疗方法为（）。

[多选题]城市生活常识培训有（）。

[单选题]为延缓硝酸酯类耐受性的产生，应采取哪些措施（）

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